Weather WorldThompson Reservoir, SD 7-Day Night Weather Forecast
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Thompson Reservoir, SD Weather Forecast
Thompson Reservoir, SD Weather Forecast Date: 332 AM MDT Thu Oct 22 2026
The area/counties/county of: Central Black Hills, including the cities of: Hill City, Mt Rushmore, Johnson Siding, Keystone, Rockerville, Hisega, Pactola Reservoir, Custer, Jewel Cave, and Custer State Park.or toggle through each period.
Early This Morning... Partly cloudy. Near steady temperature in the mid 50s. South winds 5 to 10 mph with gusts up to 20 mph.
Today... Partly cloudy in the morning, then clearing. Highs in the lower 70s. Southwest winds 5 to 10 mph. Gusts up to 20 mph in the afternoon.
Tonight... Partly cloudy. Lows in the lower 50s. Southwest winds 5 to 10 mph with gusts up to 20 mph.
Friday... Partly cloudy in the morning, then clearing. Highs in the lower 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph, increasing to 35 mph in the afternoon.
Friday Night... Partly cloudy. A slight chance of rain showers in the evening. Lows in the upper 30s. West winds 10 to 20 mph. Gusts up to 40 mph, Decreasing to 30 mph after midnight. Chance of rain 20%.
Saturday... Partly cloudy. Much cooler with highs in the upper 40s. Northwest winds 10 to 15 mph with gusts up to 30 mph, becoming northeast around 5 mph with gusts up to 20 mph in the afternoon.
Saturday Night... Partly cloudy. A slight chance of snow after midnight. Lows in the lower 30s. Chance of snow 20%.
Sunday... Mostly cloudy with a chance of snow. A chance of rain in the afternoon. Highs in the lower 40s. Chance of precipitation 50%.
Sunday Night... Mostly cloudy with a chance of rain and snow. Lows around 30. Chance of precipitation 50%.
Monday... Mostly cloudy. A chance of snow and rain in the morning, then a slight chance of rain and snow in the afternoon. Highs in the lower 40s. Chance of precipitation 30%.
Monday Night... Mostly cloudy. A slight chance of rain and snow in the evening. Lows around 30. Chance of precipitation 20%.
Tuesday... Partly cloudy. Highs in the upper 40s.
Tuesday Night... Partly cloudy. Lows in the mid 30s.
POP = Probability of Precipitation
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