Harrison, SD 7-Day Weather Forecast
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Harrison Weather Forecast


Harrison, SD Weather Forecast Date: 614 PM CDT Thu Oct 29 2026
Weather forecast for Harrison, SD
| Tonight Lo: 41°F Lo: 5°C |
Tonight... Mostly clear this evening, then becoming partly cloudy. Lows in the lower 40s. Southeast winds 5 to 10 mph. |
| Fri Hi: 55°FHi: 13°C Lo: 49°F Lo: 9°C |
Friday... Mostly cloudy. A slight chance of showers in the afternoon. Highs in the mid 50s. East winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20%. |
| Sat Hi: 61°FHi: 16°C Lo: 50°F Lo: 10°C |
Saturday... Mostly cloudy with a slight chance of showers in the morning, then partly sunny in the afternoon. Highs in the lower 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20%. |
| Sun Hi: 61°FHi: 16°C Lo: 51°F Lo: 11°C |
Sunday... Mostly cloudy. Highs in the lower 60s. |
| Mon Hi: 61°FHi: 16°C Lo: 49°F Lo: 9°C |
Monday... Showers. Highs in the lower 60s. Chance of rain 90%. |
| Tue Hi: 55°FHi: 13°C Lo: 41°F Lo: 5°C |
Tuesday... Showers likely. Breezy with highs in the mid 50s. Chance of rain 70%. |
| Wed Hi: 50°FHi: 10°C Lo: 35°F Lo: 2°C |
Wednesday... Mostly cloudy with a chance of showers in the morning, then partly sunny in the afternoon. Highs around 50. Chance of rain 50%. |
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