| NWS Forecast for: Dewey County Issued by: National Weather Service Aberdeen, SD Last Update: 431 PM MDT Sat Jun 20 2026 |  |
| Tonight: A slight chance of thunderstorms. A chance of showers this evening, then showers after midnight. Lows in the lower 50s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent. Sunday: Showers with a slight chance of thunderstorms in the morning, then showers likely in the afternoon. Cooler with highs in the mid 60s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100 percent. Sunday Night: Mostly cloudy with a chance of showers in the evening, then partly cloudy after midnight. Lows in the upper 40s. East winds 10 to 15 mph with gusts up to 25 mph, becoming southeast around 5 mph after midnight. Chance of rain 40 percent. Monday: Partly sunny. A slight chance of thunderstorms in the afternoon. Highs in the lower 70s. Southeast winds 10 to 15 mph. Chance of rain 20 percent. Monday Night: A chance of thunderstorms. Showers. Lows in the lower 50s. Southeast winds 5 to 10 mph, becoming southwest after midnight. Chance of rain 80 percent. Tuesday: Partly sunny. A slight chance of showers in the morning. Breezy with highs in the lower 70s. Chance of rain 20 percent. Tuesday Night: Mostly clear and breezy. Lows in the upper 40s. Wednesday Through Thursday: Partly cloudy. Highs in the mid 70s. Lows in the upper 40s. Thursday Night: Mostly clear in the evening, then partly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows in the lower 50s. Chance of rain 30 percent. Friday: Mostly cloudy in the morning, then becoming partly sunny. A chance of showers in the morning. A slight chance of thunderstorms. Highs in the upper 70s. Chance of rain 30 percent. Friday Night: Partly cloudy with a chance of thunderstorms in the evening, then mostly cloudy with a slight chance of thunderstorms after midnight. Lows in the upper 50s. Chance of rain 30 percent. Saturday: Mostly cloudy with a slight chance of showers in the morning, then partly sunny with a slight chance of thunderstorms in the afternoon. Breezy with highs in the mid 80s. Chance of rain 20 percent. | |
| Zone Forecast: Dewey County | |
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