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Harrison Flat School, SD Weather Forecast
Harrison Flat School, SD Weather Forecast Date: 1232 AM MDT Fri Oct 23 2026
The area/counties/county of: Custer Co Plains, including the city of Folsom.or toggle through each period.
Overnight... Partly cloudy. Near steady temperature in the mid 50s. South winds 5 to 10 mph.
Friday... Partly cloudy in the morning, then clearing. Highs in the lower 80s. Southwest winds 10 to 20 mph. Gusts up to 25 mph, increasing to 35 mph in the afternoon.
Friday Night... Mostly clear in the evening, then becoming partly cloudy. A 20% chance of showers. Breezy with lows in the lower 40s. Southwest winds 10 to 15 mph with gusts up to 30 mph, increasing to northwest 15 to 25 mph with gusts up to 45 mph after midnight.
Saturday... Mostly sunny and breezy. Much cooler with highs in the mid 50s. North winds 15 to 25 mph, diminishing to 10 to 15 mph in the afternoon. Gusts up to 40 mph.
Saturday Night... Partly cloudy. Lows in the mid 30s. Northeast winds 5 to 10 mph.
Sunday... Mostly cloudy. A chance of rain with a slight chance of snow in the morning, then rain likely in the afternoon. Little or no snow accumulation. Highs in the upper 40s. Chance of precipitation 60%.
Sunday Night... Rain. A chance of snow after midnight. Little or no snow accumulation. Lows in the lower 30s. Chance of precipitation 90%.
Monday... Mostly cloudy. Rain likely with a chance of snow in the morning, then a chance of rain in the afternoon. Little or no snow accumulation. Highs in the mid 40s. Chance of precipitation 70%.
Monday Night... Mostly cloudy with a 40% chance of rain. Lows in the lower 30s.
Tuesday... Becoming partly cloudy. Highs in the upper 50s.
Tuesday Night... Partly cloudy in the evening, then clearing. Lows in the mid 30s.
Wednesday... Mostly sunny. Highs in the upper 50s.
Wednesday Night... Partly cloudy. Lows in the lower 30s.
POP = Probability of Precipitation
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