… Average Weather in September in Sioux Falls South Dakota, United States. Rainfall amounts across a large area ranged from 3 to 8 inches. See Historical Weather Data for a Location and Date. Central South Dakota. These times of year are the second busiest with tourists. The estimated value at Rapid City is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Rapid City and a given station. In october in North Dakota, the climate is quite dry (with 1.8in of rainfall over 6 days). South Dakota Weather. Calendar overview of Months Weather Forecast. Date Weather Pre. There are usually 6 days with some rain in Pierre in September and the average monthly rainfall is 32mm . Weather in Menno at 15 September, detailed forecast for 15 September in Menno from SINOPTIK.PL for South Dakota, USA July is the hottest month for South Dakota with an average high temperature of 85.2°, which ranks it as about average compared to other states. The warmest month (with the highest average high temperature) is July (26.6°C). Montly weather forecast in Aberdeen on Yandex.Weather. [email protected]__remove_this_part__weatherspark.com. Check temperature, rainfall & sunshine averages & more in September 2021 in Pierre, South Dakota - USA Weather Forecasts. Western South Dakota is warmer, but also windier with a brisk NW breeze. The thin dotted lines are the corresponding average perceived temperatures. Average Weather in September at Black Hills Airport South Dakota, United States. The most pleasant months of the year for Rapid City are June, September and August. Fall weather tends to be mild with an average daytime high of 57°F (14°C) and low of 44°F (7°C), although temperatures and precipitation can vary. All the numbers here are averages for the years 1961 to 1990. Access hourly, 10 day and 15 day forecasts along with up to the minute reports and videos from AccuWeather.com The Old Farmer’s Almanac Long Range Weather Forecasts show deviations from normal temperatures and precipitation amounts, based on 30-year rolling averages gathered by government meteorological agencies, specifically NOAA and Environment Canada. This report illustrates the typical weather in Rapid City, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night. The climate is rather fresh here this month, but it is endurable by dressing hot. The month of September in Rapid City is more likely than not fully within the growing season, with the chance that a given day is in the growing season rapidly decreasing from 99% to 60% over the course of the month. Average daily temperatures in September. For reference, on July 26, the hottest day of the year, temperatures in Rapid City typically range from 62°F to 87°F, while on January 1, the coldest day of the year, they range from 17°F to 35°F. Weather is far too cold this time of year in South Dakota to be enjoyable for warm weather travelers. 76. High °C. Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory. The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands. The month of September in Rapid City experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 29% to 35%. The wettest month (with the highest rainfall) is May (90.9mm). Hi. Temperatures begin to cool around Labor Day, with highs averaging in the 60s and 70s during September and 50s and 60s in October. The average humidity in September is listed below for places in South Dakota. Months with the lowest number of snowfall days are June, July and August (0 days). For reference, on January 18, the windiest day of the year, the daily average wind speed is 10.2 miles per hour, while on July 29, the calmest day of the year, the daily average wind speed is 7.7 miles per hour. Road Conditions. The wind direction in Rapid City during September is predominantly out of the south from September 1 to September 2, the north from September 2 to September 18, and the west from September 18 to September 30. If you visit the Black Hills in the fall, you'll see that saying goodbye to the sizzling summer months is actually a good thing. Average Weather in September at Black Hills Airport South Dakota, United States. Pierre September weather guide. The average accumulated growing degree days in Rapid City are increasing during September, increasing by 360°F, from 2,200°F to 2,560°F, over the course of the month. 48. Visitors make foliage pilgrimages to places like Spearfish Canyon and Sica Hollow State Park to take in the gorgeous transition. “Trees will need to be watched closely under the weight of the snow,” Fraser said. South Dakota; South Dakota Weather. We will be driving from Salt Lake City area. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. Daily low temperatures decrease by 11°F, from 56°F to 44°F, rarely falling below 34°F or exceeding 65°F. The month with the highest number of rainy days is May (13.4 days). The amount of rain in September is … The average humidity in September is listed below for places in South Dakota. Weather in South Africa in september 2021. Weather Rapid City, South Dakota, USA. The thin dotted line is the corresponding average liquid-equivalent snowfall. A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. Today’s and tonight’s Rapid City, SD weather forecast, weather conditions and Doppler radar from The Weather Channel and Weather.com MERRA-2 Modern-Era Retrospective Analysis. The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . According to data from the National Weather Service, Tuesday also marked the first time a South Dakota tornado has touched down in September in at least the past 20 years. Daily high temperatures decrease by 14°F, from 82°F to 68°F, rarely falling below 52°F or exceeding 93°F. The month with most sunshine is July (Average sunshine: 11h). In South Dakota, there are 3 comfortable months with high temperatures in the range of 70-85°. You can jump to a separate table for each region of the state: Eastern , Central and Western South Dakota. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. north, 0.5" below south) The weather … How much does it rain in Keystone in September? South Dakota, the 17th largest state in the nation, covers so much area that it has several different geographic areas, each with its own weather pattern. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. From the start to the end of the month, the length of the day decreases by 1 hour, 27 minutes, implying an average daily decrease of 2 minutes, 59 seconds, and weekly decrease of 20 minutes, 56 seconds. In South Dakota, there are 3 comfortable months with high temperatures in the range of 70-85°. The percentage of time spent at various humidity comfort levels, categorized by dew point. Weather in Hamill at 15 September, detailed forecast for 15 September in Hamill from SINOPTIK.PL for South Dakota, USA Months with the lowest UV index are January and December (UV index 1). Over the course of September in Rapid City, the length of the day is rapidly decreasing. The most pleasant months of the year for South Dakota are June, September and August. Average Humidity. The growing season in Rapid City typically lasts for 5.0 months (153 days), from around May 4 to around October 4, rarely starting before April 14 or after May 22, and rarely ending before September 13 or after October 23. Average Weather in September in Rapid City South Dakota, United States Daily high temperatures decrease by 14°F , from 82°F to 68°F , rarely falling below 52°F or exceeding 93°F . The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than. Weather.com brings you the most accurate monthly weather forecast for with average/record and high/low temperatures, precipitation and more. Low °C. Updated South Dakota weather maps. September tornadoes in South Dakota aren’t rare, but they aren’t exactly common either. Lows drop from the 30s and 40s to the 20s and 30s. Today’s and tonight’s Rapid City, SD weather forecast, weather conditions and Doppler radar from The Weather Channel and Weather.com Tonight the winds will die down, and the sky will be mostly clear as the cloud deck finally moves east. Custer Weather Forecasts. In Rapid City, the chance of a wet day over the course of September is essentially constant, remaining around 15% throughout. The average hourly temperature, color coded into bands. Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold. This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. There are so many things that make fall an amazing time to visit—the cool, crisp autumn air, fewer crowds, and undeniably picturesque views of the fall foilage—it's easy to see why autumn is the ideal time to tour the Black Hills and Badlands of South Dakota. In South Dakota, there are 3 comfortable months with high temperatures in the range of 70-85°. The average high during this season is between 35.6°F (2°C) and 29.4°F (-1.4°C). | Resources, Large, scenic rocks and forests of trees around this tiny Sylvan Lake located in the tranquil Custer State Park in Custer City, South Dakota, In Custer, South Dakota, the average daily maximum UV index in. Looking at the 48 hour rainfall totals from late Tuesday September 10th through the morning of Thursday, September 12th, a band of extreme rainfall … Weather in South Dakota. The average hourly wind speed in Rapid City is increasing during September, increasing from 8.1 miles per hour to 9.1 miles per hour over the course of the month. The September weather guide for Custer, South Dakota shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & … Showing: All Year January February March April May June July August September October November December We assume no responsibility for any decisions made on the basis of the content presented on this site. This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. Time zones for airports and weather stations are provided by AskGeo.com . Current weather forecasts from the National Weather Service are available online or by phone at (605) 341-7531. How sunny is it in South Dakota in September? The area within 2 miles of Rapid City is covered by artificial surfaces (59%) and grassland (35%), within 10 miles by grassland (67%) and trees (18%), and within 50 miles by grassland (61%) and trees (23%). The most pleasant months of the year for South Dakota are June, September and August. More about our weather records Sioux Falls Weather History for the Previous 24 Hours Show weather for: Previous 24 hours December 16, 2020 December 15, 2020 December 14, 2020 December 13, 2020 December 12, 2020 December 11, 2020 December 10, 2020 December 9, 2020 December 8, 2020 December 7, 2020 December 6, 2020 December 5, 2020 December 4, 2020 December 3, 2020 … For reference, the year's highest daily chance of a wet day is 37% on June 5, and its lowest chance is 3% on January 16. New York 28° 12° Miami Beach Coast Guard Station 70° 67° Boston 29° 13° Chicago 38° 33° Home. Shortwave radiation includes visible light and ultraviolet radiation. Free Long Range Weather Forecast for Rapid City, South Dakota September 2021. The month with the highest snowfall is March (304.8mm). All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . Posted in South Dakota September 07, 2019 by Annie. Sunny, mild days and cool nights are typical during the autumn. Weather in September The first month of the autumn, September, is still a warm month in Spearfish, South Dakota, with temperature in the range of an average low of 48.7°F (9.3°C) … All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. Rainfall will be near to below normal. The percentage indicates the probability of having the weather … The stations contributing to this reconstruction are: Ellsworth Air Force Base (51%, 13 kilometers, northeast); Rapid City Regional Airport (42%, 15 kilometers, east); Custer County Airfield (3.0%, 49 kilometers, southwest); and Black Hills Airport (4.5%, 63 kilometers, northwest). The black line is the percentage chance that a given day is within the growing season. The month with the longest days is June (Average daylight: 15.4h). The shaded overlays indicate night and civil twilight. For reference, on July 18, the muggiest day of the year, there are muggy conditions 3% of the time, while on September 24, the least muggy day of the year, there are muggy conditions 0% of the time. The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 71% of the time. Weather September flooding disaster declaration approved in South Dakota for flooding, tornadoes Written By: Forum News Service | Nov 18th 2019 - 2pm. On average, it rains or snows a smalll amount: 1 to 2 times per month. A climate graph showing rainfall, temperatures and normals. These predictions are probabilities for the month of september from weather reports for over 10 years. The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. Average Weather during September in Pierre (South Dakota), United States of America. The average daily incident shortwave solar energy in Rapid City is decreasing during September, falling by 1.4 kWh, from 5.9 kWh to 4.4 kWh, over the course of the month. Current road conditions are available by phone by dialing 511 or by visiting Safe Travel USA. The weather … The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. Temperature In Custer, the average high-temperature in September slightly decreases, from a warm 78.8°F (26°C) in August, to an agreeable 70.2°F (21.2°C). The shortest day of the month is September 30, with 11 hours, 44 minutes of daylight and the longest day is September 1, with 13 hours, 11 minutes of daylight. Months with least sunshine are November and December (Average sunshine: 5). We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day). The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. [2383677], Weather Atlas | © 2002-2020 | Yu Media Group d.o.o. Daylight saving time is observed in Rapid City during 2020, but it neither starts nor ends during September, so the entire month is in daylight saving time. The most pleasant months of the year for South Dakota are June, September and August. The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. In that time frame, six weather incidents in which at least one tornado touched down in South Dakota have occurred in June, while four each have taken place in May and August and three were recorded in July. Hello. High °F. Get the monthly weather forecast for Rapid City, SD, including daily high/low, historical averages, to help you plan ahead. The earliest sunrise of the month in Rapid City is 6:16 AM on September 1 and the latest sunrise is 33 minutes later at 6:50 AM on September 30. The average low-temperature, in September, is 43.3°F (6.3°C). The topography within 2 miles of Rapid City contains significant variations in elevation, with a maximum elevation change of 689 feet and an average elevation above sea level of 3,334 feet. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. The average minimum temperature (usually the minimum temperature is noted during the night) in Pierre in September is 9.6°C (49.28°F). FALL. The solar day over the course of September. The driest month (with the lowest rainfall) is January (8.4mm). Torrential rainfall in parts of South Dakota flooded homes, washed out roads and canceled classes in at least 20 school districts on Friday. Rapid City weather forecast – free weather forecast for Rapid City ViaMichelin offers you the weather for Rapid City today and tomorrow, as well as a 10 day weather outlook. Months with the lowest snowfall are June, July and August (0mm). The tables give daily averages along with highest and lowest relative humidity levels. My husband and I are planning our first trip to South Dakota/Badlands/Mount Rushmore/Crazy Horse etc. Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere). For reference, on June 20, the longest day of the year, the Sun rises at 5:09 AM and sets 15 hours, 30 minutes later, at 8:39 PM, while on December 21, the shortest day of the year, it rises at 7:25 AM and sets 8 hours, 53 minutes later, at 4:17 PM. Because our weather varies from one community to the next, the averages below are from Rapid City unless otherwise noted. Kuluncak, Turkey (6,215 miles away) is the far-away foreign place with temperatures most similar to Rapid City (view comparison). One inch of snow also on Labor Day in Rapid City, South Dakota, bested the previous record earliest snow, there, by four days (Sept. 11, 2014). Monthly temperature, precipitation and hours of sunshine. The month with the lowest average high temperature is December (2.1°C). For each station, the records are corrected for the elevation difference between that station and Rapid City according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. South Dakota is famous for its cold winters and ample snow, so when we hear that we’re in for a long winter, you know we take notice! Weather forecast in mobile app. While towns in South Dakota, North Dakota, Wyoming and Minnesota make the lists for some of the nation's coldest; not one from the Black Hills is included or close to. The September weather guide for Hot Springs, South Dakota shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. The percentage of time spent in various temperature bands. South Dakota Interactive Map of Historical Record High and Low Temperatures Weather History for Places in South Dakota . This line produced numerous reports of wind damage and heavy rainfall, as well as multiple tornadoes. Get the South Dakota weather forecast. This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid. Daytime temperatures usually reach 23°C in Sioux Falls, South Dakota in September, falling to 9°C at night. Get the monthly weather forecast for Spearfish, SD, including daily high/low, historical averages, to help you plan ahead. Daily low temperatures decrease by 11°F , from 56°F to 44°F , rarely falling below 34°F or exceeding 65°F . The average sliding 31-day rainfall during September in Rapid City is essentially constant, remaining about 1.1 inches throughout, and rarely exceeding 2.9 inches or falling below 0.2 inches. Below, find the the weather forecast for september for most popular cities in South Africa. Torrential rainfall in parts of South Dakota flooded homes, washed out roads and canceled classes in at least 20 school districts on Friday. The latest sunset is 7:27 PM on September 1 and the earliest sunset is 53 minutes earlier at 6:34 PM on September 30. The month with shortest days is December (Average daylight: 9h). December 2020 Long Range Weather Forecast for High Plains; Dates Weather Conditions; Dec 1-2: Sunny, mild: Dec 3-9: Snowy periods, very cold: Dec 10-17: Sunny, mild: Dec 18-23: Rain and snow showers, mild: Dec 24-31: Snowy periods, cold: December: temperature 29° (1° below avg.) From the evening of Tuesday, September 10, 2019, into the early morning of Wednesday, September 11th, a line of severe thunderstorms moved across southeast South Dakota, northeast Nebraska, northwest Iowa and southwest Minnesota. 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