Weather WorldHarrison Flat School, SD 7-Day Night Weather Forecast
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Harrison Flat School, SD Weather Forecast
Harrison Flat School, SD Weather Forecast Date: 833 AM MDT Mon Aug 10 2026
The area/counties/county of: Custer Co Plains, including the city of Folsom.or toggle through each period.
Rest of Today... Partly cloudy this morning, then clearing. Areas of smoke. Highs in the upper 90s. Southeast winds 5 to 10 mph. Gusts up to 25 mph this afternoon.
Tonight... Partly cloudy. Areas of smoke. Lows in the lower 60s. Northeast winds 10 to 15 mph. Gusts up to 25 mph in the evening.
Tuesday... Partly cloudy. Areas of smoke. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Northeast winds 10 to 15 mph. Gusts up to 25 mph in the afternoon. Chance of rain 30%.
Tuesday Night... Partly cloudy. A chance of showers and thunderstorms in the evening, then a slight chance of showers and thunderstorms after midnight. Lows in the lower 60s. Northeast winds 10 to 15 mph. Gusts up to 30 mph in the evening. Chance of rain 30%.
Wednesday... Partly cloudy with a chance of showers and thunderstorms in the morning, then mostly cloudy with showers and thunderstorms likely in the afternoon. Highs in the mid 80s. Northeast winds 5 to 10 mph with gusts up to 20 mph, increasing to east 10 to 20 mph with gusts up to 30 mph in the afternoon. Chance of rain 60%.
Wednesday Night... Thunderstorms likely. Showers likely. Lows in the upper 50s. Chance of rain 70%.
Thursday... Showers and thunderstorms likely. Highs in the lower 70s. Chance of rain 70%.
Thursday Night... A chance of thunderstorms. Showers. Lows in the mid 50s. Chance of rain 80%.
Friday... Mostly cloudy. Showers likely in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 60%.
Friday Night... Mostly cloudy. Showers likely with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Lows in the mid 50s. Chance of rain 60%.
Saturday... Becoming partly cloudy. A chance of showers. A chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 40%.
Saturday Night... Partly cloudy with a chance of showers. A chance of thunderstorms in the evening, then a slight chance of thunderstorms after midnight. Lows in the mid 50s. Chance of rain 50%.
POP = Probability of Precipitation
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