(KOTA) - Overnight we will stick with the cloudy skies and colder temperatures. High °C. The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 70% of the time. September 8, 2020. Partly cloudy. Clear. 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. How sunny is it in South Dakota in September? Mostly cloudy. Last Update: 306 PM … The Lodge at Deadwood Gaming Resort is one of the newest, most beautiful Deadwood hotels. 1-Day 3-Day 5-Day Graph Plots Open in Graphs The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands. ... Average Temperatures for Towns in the Black Hills September - December. In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. September sees an average high of 73˚ with a low of 45˚; October averages a high of 60˚ and a low of 34˚; November sees an avg. 28 °F: Average highs are around 70 degrees with lows around 40s. Our interactive map allows you to see the local & national weather Does it rain in South Dakota in September? Late summer storm bringing snow to the Black Hills. The stations on which we may fall back are Ellsworth Air Force Base, Custer County Airfield, Rapid City Regional Airport, Buffalo, Gillette-Campbell County Airport, Faith, Pine Ridge Airport, and Philip Municipal Airport. 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. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. DEADWOOD, S.D. The thin dotted line is the corresponding average liquid-equivalent snowfall. DEADWOOD, S.D. MERRA-2 Modern-Era Retrospective Analysis. Weather in the Black Hills of South Dakota By Laural A. Bidwell, author of Moon Mount Rushmore & The Black Hills The Dakotas have the reputation for harsh winters with frequent blizzards and scorching summers, but weather in the Black Hills is much less dramatic. Temperatures begin to cool around Labor Day, with September highs averaging in the 60s and 70s, falling into the 50s and 60s in October. This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. Rodeos have a remarkable history in western South Dakota. The earliest sunrise of the month at Black Hills Airport is 6:18 AM on September 1 and the latest sunrise is 34 minutes later at 6:52 AM on September 30. The average high during this season is between 35.6°F (2°C) and 29.4°F (-1.4°C). 9:07 am. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. Fall Things to Do. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . The black line is the percentage chance that a given day is within the growing season. Mostly sunny. Northwest Winds 5 to 10 Mph. A 20 percent chance of snow in the evening. The month of September at Black Hills Airport experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 30% to 36%. The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. Highs in the mid 20s to lower 30s. Black Hills Communities. Free Long Range Weather Forecast for Rapid City, South Dakota. For reference, on March 14, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 54%, while on July 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 76%. When it's right for you to travel, our Black Hills communities are here to welcome you. Sunny, mild days and cool nights are typical during the autumn. Place. Get the monthly weather forecast for Rapid City, SD, including daily high/low, historical averages, to help you plan ahead. Accumulations of 6 inches (15.2 centimeters) to 12 inches (30.4 centimeters) were forecast for higher elevations in the Black Hills. For reference, on July 21, 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. Daytime temperatures usually reach 23°C in Sioux Falls, South Dakota in September, falling to 9°C at night. ATV in the Black Hills National Forest Ditch the map and follow Black Hills Outdoor Fun on a 4-hour ATV or UTV tour through the national forest. Central South Dakota. 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. 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). See the latest South Dakota Doppler radar weather map including areas of rain, snow and ice. 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