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Gragg School, IL Weather Forecast
Gragg School, IL Weather Forecast Date: 908 AM CDT Tue Sep 15 2026
The area/counties/county of: Montgomery County Il, including the cities of: Litchfield and Vandalia.or toggle through each period.
Rest of Today... Sunny. Isolated showers and thunderstorms this afternoon. Warmer with highs in the upper 90s. Southwest winds 10 to 15 mph. Chance of rain 20%. Heat index values up to 105.
Tonight... Partly cloudy with showers and thunderstorms likely in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Lows around 70. South winds around 5 mph, becoming east around 5 mph after midnight. Chance of rain 70%. Heat index values up to 100 early in the evening.
Wednesday... Mostly cloudy with a chance of showers and thunderstorms in the morning, then partly sunny in the afternoon. Highs in the mid 90s. East winds around 5 mph, becoming south in the afternoon. Chance of rain 50%. Heat index values up to 102.
Wednesday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 70s. South winds around 5 mph. Heat index values up to 100 early in the evening.
Thursday... Sunny, hot with highs in the mid 90s. Southwest winds around 5 mph, becoming northwest in the afternoon. Heat index values up to 103.
Thursday Night... Partly cloudy in the evening, then becoming mostly clear. Lows around 70.
Friday... Sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 20%.
Friday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 60s.
Saturday... Mostly sunny. Highs in the lower 90s.
Saturday Night... Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 20%.
Sunday... Partly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 40%.
Sunday Night... Mostly cloudy with a slight chance of showers and thunderstorms. Lows around 60. Chance of rain 20%.
POP = Probability of Precipitation
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