Fort Thompson, SD 7-Day Night Weather Forecast
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Fort Thompson, SD Weather Forecast


Fort Thompson, SD Weather Forecast Date: 222 AM CDT Tue Sep 22 2026
The area/counties/county of: Buffalo, including the city of Fort Thompson.or toggle through each period.
Rest of Tonight... Mostly cloudy. Near steady temperature in the upper 40s. East winds around 5 mph.
Tuesday... Patchy fog in the morning. Mostly cloudy. Highs in the lower 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph.
Tuesday Night... Mostly cloudy. A chance of showers after midnight. Lows around 50. Southeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50%.
Wednesday... Cloudy with a 50% chance of showers. Breezy with highs in the mid 60s. Southeast winds 15 to 25 mph with gusts up to 35 mph.
Wednesday Night... Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the mid 50s. Southeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50%.
Thursday... Mostly cloudy. Highs in the lower 70s.
Thursday Night... Mostly cloudy. A chance of showers after midnight. Lows in the mid 50s. Chance of rain 40%.
Friday... Mostly cloudy with a 50% chance of showers. Highs in the upper 60s.
Friday Night... A slight chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the mid 50s. Chance of rain 50%.
Saturday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 70s.
Saturday Night... Partly cloudy. Lows in the mid 50s. Highs in the lower 70s.
Sunday... Partly cloudy. Lows in the mid 50s. Highs in the lower 70s.
Sunday Night... Partly cloudy with a slight chance of showers in the evening, then mostly cloudy with a slight chance of thunderstorms after midnight. Lows in the mid 50s. Chance of rain 20%.
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