Intervals of clouds and sunshine in the morning with more clouds for later in the day. The thunderstorm system formed in eastern Nebraska and southern South Dakota during the early morning hours of Aug. 10, before tearing a path through central Iowa later that morning. Average Weather in August in Rapid City South Dakota, United States Daily high temperatures decrease by 4°F , from 87°F to 82°F , rarely falling below 70°F or exceeding 96°F . The average maximum temperature lies around 31.0°C (87.8°F). Below are average maximum temperatures at popular destinations in South Dakota in 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. 85. In South Dakota, there are 3 comfortable months with high temperatures in the range of 70-85°. The last month of the summer, August, is another tropical month in Sturgis, South Dakota, with average temperature varying between 57.9°F (14.4°C) and 86°F (30°C). August is in the summer in Sturgis and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a comfortable 29°C (84°F), whilst at night 13°C (55°F) is normal. NOAA's 1981-2010 Climate Normals. South Dakota, United States. Brittany Ferries  Cruise Nation  DFDS  English Heritage  Enterprise  Explore! High °C. In August the average monthly rainfall in Rapid City, SD is 1.00 inches with rain usually falling on 10 days. Year * Month * Day * Data is available up to December 3, 2020. Weather forecasts for all towns and cities in South Dakota Get the monthly weather forecast for Deadwood, SD, including daily high/low, historical averages, to help you plan ahead. Updated South Dakota weather maps. 28 °F: Pierre Weather and Climate in August Are you planning a holiday with hopefully nice weather in Pierre in August 2021? The most pleasant months of the year for South Dakota are June, September and August. Average Weather in August in Custer South Dakota, United States. At the beginning of August you can expect higher temperatures, the average highest temperature is around 31.5 ℃ (88.7 ℉). August is in the summer in Sturgis and is typically the 2nd warmest month of the year. Daily low temperatures decrease by 5°F , from 61°F to 56°F , rarely falling below 47°F or exceeding 68°F . High 49F. Nov In August 1981 there was a total of 0.81 inches of rain, that fell on 7 days. First Choice  FloridaTix  Hoseasons  James Villas  Jet2.com  Jet2holidays  Love Holidays  On the Beach  Rail Europe - formerly Loco2  RHS  Saga Holidays  TUI  Virgin Atlantic  VRBO (formerly HomeAway)  More... We help you find the best travel deals for your holiday in the sun by sharing tips on when and where to go, before providing you with top discounts. Weather in Badlands National Park is variable and unpredictable with temperature extremes ranging from 116° F to -40° F. Summers are hot and dry with occasional violent thunderstorms. How sunny is it in Keystone in August? Read the Full Article Storm Center Update- Monday AM, November 30th 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. Weather in South Dakota. Weather in August. Free Long Range Weather Forecast for Sioux Falls, South Dakota August 2021. You can jump to a separate table for each region of the state: Eastern, Central and Western South Dakota. U.S.A and Global Events for August 13th: Precipitation for August 1981. 1%. 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