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Grenville, SD 7-Day Night Weather Forecast
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Grenville, SD Weather Forecast
Grenville, SD Weather Forecast Date: 621 AM CDT Sat Sep 19 2026
The area/counties/county of: Day, including the city of Webster.or toggle through each period.
Today... Cloudy. A slight chance of very light drizzle this morning. Patchy dense fog. Highs in the mid 60s. Northeast winds 5 to 10 mph with gusts up to 20 mph.
Tonight... Mostly cloudy. Lows in the lower 50s. Northeast winds 5 to 10 mph with gusts up to 20 mph.
Sunday... Mostly cloudy. Highs in the mid 60s. Northeast winds 10 to 15 mph with gusts up to 25 mph.
Sunday Night... Mostly cloudy. Lows in the upper 40s. East winds 5 to 10 mph.
Monday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the lower 60s. East winds 5 to 10 mph.
Monday Night... Partly cloudy. Lows in the mid 40s. Highs in the mid 60s.
Tuesday... Partly cloudy. Lows in the mid 40s. Highs in the mid 60s.
Wednesday... Partly sunny. Highs in the upper 60s.
Wednesday Night... Mostly cloudy with a 30% chance of showers. Lows in the lower 50s.
Thursday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the upper 60s.
Thursday Night... Partly cloudy in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the lower 50s. Chance of rain 20%.
POP = Probability of Precipitation
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