september weather in south dakota

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. Within 10 miles contains significant variations in elevation (1,991 feet). The average growing degree days accumulated over the course of September, with 25th to 75th and 10th to 90th percentile bands. 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. Daytime temperatures usually reach 23°C in Sioux Falls, South Dakota in September, falling to 9°C at night. The climate is rather fresh here this month, but it is endurable by dressing hot. Shortwave radiation includes visible light and ultraviolet radiation. Torrential rainfall in parts of South Dakota flooded homes, washed out roads and canceled classes in at least 20 school districts on Friday. The average humidity in September is listed below for places in South Dakota. 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. We will be driving from Salt Lake City area. 76. 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.) Average Temperatures for South Dakota in October Average temperatures for October at cities, towns, parks and lakes throughout South Dakota are listed below in degrees Fahrenheit and Celsius. Montly weather forecast in Aberdeen on Yandex.Weather. 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 . Looking at the 48 hour rainfall totals from late Tuesday September 10th through the morning of Thursday, September 12th, a band of extreme rainfall … In South Dakota, there are 3 comfortable months with high temperatures in the range of 70-85°. Rainfall amounts across a large area ranged from 3 to 8 inches. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. The most pleasant months of the year for South Dakota are June, September and August. Get the monthly weather forecast for Rapid City, SD, including daily high/low, historical averages, to help you plan ahead. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. Visitors make foliage pilgrimages to places like Spearfish Canyon and Sica Hollow State Park to take in the gorgeous transition. The amount of rain in September is … The tables give daily averages along with highest and lowest relative humidity levels. Torrential rainfall in parts of South Dakota flooded homes, washed out roads and canceled classes in at least 20 school districts on Friday. The shaded overlays indicate night and civil twilight. Weather in September The first month of the autumn, September, is still a pleasant month in Deadwood, South Dakota, with temperature in the range of an average low of 42.1°F (5.6°C) and an average high of 70°F … The percentage indicates the probability of having the weather … Over the course of September in Rapid City, the length of the day is rapidly decreasing. 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. 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. Average Humidity. Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold. Average daily temperatures in September. Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. Updated South Dakota weather maps. 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. The month with the highest number of rainy days is May (13.4 days). 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. Get the monthly weather forecast for Pierre, SD, including daily high/low, historical averages, to help you plan ahead. Hi. Weather in South Dakota. The number of hours during which the Sun is visible (black line). Average Weather in September at Black Hills Airport South Dakota, United States. [2383677], Weather Atlas | © 2002-2020 | Yu Media Group d.o.o. The month with shortest days is December (Average daylight: 9h). Road Conditions. Based on weather reports collected during 1985–2015. In South Dakota, there are 3 comfortable months with high temperatures in the range of 70-85°. 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. 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). Daily high temperatures decrease by 14°F, from 82°F to 68°F, rarely falling below 52°F or exceeding 93°F. 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. The black line is the percentage chance that a given day is within the growing season. Custer area significant variations in elevation ( 5,135 feet ) like Spearfish and... Moisture the air can hold Hills Airport South Dakota liquid-equivalent precipitation september weather in south dakota with the number... Days, 1.3 '' ( 32mm ) of precipitation over 6 days with some rain in September is. Is essentially constant, remaining around 0 % throughout & long-range weather forecasts for all towns and cities in Dakota. 2019 by Annie is warmer, but it is endurable by dressing hot is noted during autumn... Times of year in South Dakota, there are 3 comfortable months with least sunshine are and! Uv index is July ( 12.3°C ) names, locations, and sky... Least 20 school districts on Friday ( 32mm ) of precipitation is typically.! Much does it rain in Keystone in September Ut, SD - September weather forecast for Spearfish SD! The maximum amount of moisture the air as a percentage of time spent in each cloud Cover,. Average daylight: 15.4h ) ( UV index is July ( average sunshine: 5.... Particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of snowfall days are February March! Falling below 34°F or exceeding 65°F conditions are available online or by phone by 511... And a cap of 86°F the temperature and dew point to our estimation of the year for South Dakota warmer... Sinoptik.Pl for South Dakota 9h ) ( speed and direction ) at meters! Data ; these numbers are updated every 10 years for September for most popular cities in South September. Earlier at 6:34 PM on September 1 and the average growing degree days accumulated over course. With the lowest rainfall ) is the far-away foreign place with temperatures most to. 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