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Iron Mountain, SD Weather Forecast
Iron Mountain, SD Weather Forecast Date: 1017 PM MDT Mon Oct 12 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.
Overnight... Rain showers. Patchy fog. Lows in the upper 30s. South winds around 5 mph. Chance of rain 80%.
Tuesday... Cloudy. A chance of rain showers in the morning. Highs in the lower 50s. Southeast winds 5 to 10 mph. Chance of rain 50%.
Tuesday Night... Mostly cloudy with a 20% chance of rain. Lows in the upper 30s. Northeast winds around 5 mph in the evening, becoming light and variable.
Wednesday... Mostly cloudy in the morning, then partly cloudy with a chance of rain in the afternoon. Highs in the lower 50s. Southeast winds 5 to 10 mph. Chance of rain 50%.
Wednesday Night... Rain likely. Lows in the upper 30s. South winds around 5 mph, becoming northwest with gusts up to 20 mph after midnight. Chance of rain 70%.
Thursday... Partly cloudy with a chance of rain in the morning, then mostly sunny in the afternoon. Highs in the lower 50s. Chance of rain 30%.
Thursday Night... Clear. Lows in the upper 20s.
Friday... Sunny. Highs in the mid 50s.
Friday Night... Clear. Lows around 40.
Saturday... Sunny. Highs around 70.
Saturday Night... Clear. Lows in the mid 40s.
Sunday... Sunny. Highs in the upper 60s.
Sunday Night... Mostly clear. Lows in the mid 40s.
POP = Probability of Precipitation
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