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Town of Keystone, SDKeystone, SD 7-Day Night Weather Forecast
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Keystone, SD Weather Forecast
Keystone, SD Weather Forecast Date: 937 AM MDT Mon Sep 07 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.
Rest of Today... Partly cloudy. Highs in the lower 80s. West winds 10 to 15 mph with gusts up to 30 mph.
Tonight... Mostly clear. Lows in the lower 50s. Northwest winds 10 to 15 mph. Gusts up to 30 mph in the evening.
Tuesday... Sunny. Highs in the mid 70s. Southwest winds 5 to 10 mph with gusts up to 25 mph.
Tuesday Night... Clear. Lows in the upper 40s. North winds 5 to 10 mph with gusts up to 25 mph.
Wednesday... Sunny. Highs in the lower 70s. Northwest winds 5 to 10 mph with gusts up to 20 mph.
Wednesday Night... Clear. Lows in the lower 50s.
Thursday... Sunny. Highs in the lower 80s.
Thursday Night... Clear. Lows in the mid 50s.
Friday... Sunny. Highs in the upper 70s.
Friday Night... Mostly clear. Lows in the upper 40s.
Saturday... Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs around 70. Chance of rain 20%.
Saturday Night... A slight chance of thunderstorms in the evening. Partly cloudy with a chance of showers. Lows in the mid 40s. Chance of rain 40%.
POP = Probability of Precipitation
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