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Isabel Lake, SD Weather Forecast
Isabel Lake, SD Weather Forecast Date: 121 PM MDT Wed Oct 21 2026
The area/counties/county of: Dewey, including the city of Isabel.or toggle through each period.
This Afternoon... Partly sunny. Near steady temperature in the mid 60s. East winds 5 to 10 mph.
Tonight... Mostly clear. Lows in the mid 40s. Southeast winds 5 to 10 mph with gusts up to 20 mph.
Thursday... Partly sunny. Warmer with highs in the upper 70s. Southeast winds 15 to 20 mph with gusts up to 30 mph.
Thursday Night... Partly cloudy. Not as cool with lows in the upper 50s. Southeast winds 15 to 20 mph with gusts up to 35 mph.
Friday... Partly sunny and breezy. Highs in the lower 80s. Southeast winds 15 to 25 mph with gusts up to 35 mph.
Friday Night... Partly cloudy in the evening, then mostly cloudy with a chance of rain after midnight. Windy, cooler with lows in the mid 40s. Chance of rain 30%.
Saturday... Partly cloudy and windy. Highs in the mid 50s. Lows in the mid 30s.
Saturday Night... Partly cloudy and windy. Highs in the mid 50s. Lows in the mid 30s.
Sunday... Partly sunny. A slight chance of rain in the morning, then a chance of rain in the afternoon. Highs in the upper 40s. Chance of rain 40%.
Sunday Night... Mostly cloudy with a 50% chance of rain. Lows in the lower 30s.
Monday... Mostly cloudy with a chance of rain in the morning, then partly sunny with a slight chance of rain in the afternoon. Highs in the mid 40s. Chance of rain 40%.
Monday Night... Mostly cloudy. A slight chance of rain in the evening. Lows in the lower 30s. Chance of rain 20%.
POP = Probability of Precipitation
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