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Castle Rock, SD Weather Forecast
Castle Rock, SD Weather Forecast Date: 827 PM MDT Sun Sep 20 2026
The area/counties/county of: Butte, including the cities of: Belle Fourche, Newell, Vale, Fruitdale, Belle Fourche Reservoir, and Hoover.or toggle through each period.
Rest of Tonight... Cloudy. Showers this evening, then a chance of showers. Areas of fog. Lows in the upper 40s. East winds 10 to 15 mph. Chance of rain 90%.
Monday... Mostly cloudy. Areas of fog in the morning. A chance of showers in the morning, then a slight chance of showers in the afternoon. Highs in the lower 60s. East winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50%.
Monday Night... Mostly cloudy and breezy. Lows in the mid 40s. Southeast winds 15 to 25 mph.
Tuesday... Becoming partly cloudy. Windy with highs around 70. Southeast winds 25 to 35 mph with gusts up to 50 mph.
Tuesday Night... Partly cloudy and windy. Lows in the lower 50s. Southeast winds 25 to 35 mph, diminishing to 15 to 25 mph after midnight. Gusts up to 45 mph.
Wednesday... Partly cloudy with a slight chance of showers in the morning, then mostly sunny with a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 30%.
Wednesday Night... Mostly clear. Lows in the lower 50s.
Thursday... Partly cloudy. Highs around 80.
Thursday Night... Partly cloudy. Lows in the lower 50s.
Friday... Partly cloudy and windy. Highs in the lower 80s.
Friday Night... Mostly clear and breezy. Lows in the mid 50s.
Saturday... Partly cloudy in the morning, then clearing. Breezy with highs in the upper 70s.
Saturday Night... Mostly clear. Lows around 50.
POP = Probability of Precipitation
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