Weather WorldDewey County, SD 7-Day Weather Forecast
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Dewey County Weather Forecast
Dewey County, SD Weather Forecast Date: 222 AM MDT Tue Oct 06 2026
Weather forecast for Dewey County, SD
Today Hi: 81°FHi: 27°C Lo: 49°F Lo: 9°C |
Today... Sunny. Highs in the lower 80s. Northwest winds 10 to 15 mph. Gusts up to 30 mph this afternoon. |
Wed Hi: 71°FHi: 22°C Lo: 49°F Lo: 9°C |
Wednesday... Partly sunny. Highs in the lower 70s. West winds 5 to 10 mph, becoming northwest 10 to 15 mph with gusts up to 25 mph in the afternoon. |
| Thu Hi: 69°FHi: 21°C Lo: 49°F Lo: 9°C |
Thursday... Partly sunny. Highs in the upper 60s. Southeast winds 5 to 10 mph. |
Fri Hi: 75°FHi: 24°C Lo: 55°F Lo: 13°C |
Friday... Partly cloudy. Lows in the upper 40s. Highs in the mid 70s. |
| Sat Hi: 79°FHi: 26°C Lo: 49°F Lo: 9°C |
Saturday... Mostly sunny. Highs in the upper 70s. |
Sun Hi: 59°FHi: 15°C Lo: 41°F Lo: 5°C |
Sunday... Mostly cloudy with a 20% chance of showers. Breezy and much cooler with highs in the upper 50s. |
| Columbus Day Hi: 51°FHi: 11°C Lo: 41°F Lo: 5°C |
Columbus Day... Mostly cloudy. A 40% chance of showers. Lows in the lower 40s. Highs in the lower 50s. |
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