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Summit Reservoir, SD 7-Day Weather Forecast
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Summit Reservoir Weather Forecast
Summit Reservoir, SD Weather Forecast Date: 507 PM CDT Tue Sep 01 2026
Weather forecast for Summit Reservoir, SD
Tonight Lo: 59°F Lo: 15°C |
Tonight... Mostly cloudy. A chance of thunderstorms this evening. Lows in the upper 50s. Northeast winds 10 to 15 mph, becoming north 5 to 10 mph after midnight. Chance of rain 50%. |
Wed Hi: 89°FHi: 32°C Lo: 65°F Lo: 18°C |
Wednesday... Mostly cloudy in the morning, then clearing. Humid with highs in the upper 80s. Northeast winds 5 to 10 mph, becoming southeast with gusts up to 20 mph in the afternoon. |
| Thu Hi: 91°FHi: 33°C Lo: 65°F Lo: 18°C |
Thursday... Partly sunny in the morning, then clearing. Hot with highs in the lower 90s. South winds 5 to 10 mph. |
Fri Hi: 95°FHi: 35°C Lo: 69°F Lo: 21°C |
Friday... Mostly sunny. Hot with highs in the mid 90s. |
Sat Hi: 95°FHi: 35°C Lo: 65°F Lo: 18°C |
Saturday... Mostly sunny. A slight chance of showers in the morning. Hot with highs in the mid 90s. Chance of rain 20%. |
Sun Hi: 89°FHi: 32°C Lo: 65°F Lo: 18°C |
Sunday... Partly sunny with a 20% chance of showers. Highs in the upper 80s. |
Mon Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Monday... Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the mid 60s. Highs in the mid 80s. Chance of rain 40%. |
| Mon Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Monday... Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the mid 60s. Highs in the mid 80s. Chance of rain 40%. |
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