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Okaw Valley Park, IL 7-Day Night Weather Forecast
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Okaw Valley Park, IL Weather Forecast
Okaw Valley Park, IL Weather Forecast Date: 407 AM CDT Tue Sep 01 2026
The area/counties/county of: Madison County Il, including the cities of: Alton, Edwardsville, Belleville, Cahokia, Saint Charles, and Saint Louis.or toggle through each period.
Today... Sunny, hot with highs around 100. Southwest winds around 5 mph.
Tonight... Mostly clear. Lows in the upper 70s. South winds around 5 mph. Heat index values up to 104 early in the evening.
Wednesday... Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.
Wednesday Night... Mostly clear. Lows in the upper 70s. South winds 5 to 10 mph. Heat index values up to 104 early in the evening.
Thursday... Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph.
Thursday Night... Mostly clear. Hot. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 110.
Friday... Mostly clear. Hot. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 110.
Saturday... Mostly clear. Hot. Lows in the upper 70s. Highs in the upper 90s. Heat index values up to 110.
Saturday Night... Partly cloudy. A slight chance of showers and thunderstorms. Hot. Lows in the mid 70s. Highs in the mid 90s. Chance of rain 20%. Heat index values up to 100.
Sunday... Partly cloudy. A slight chance of showers and thunderstorms. Hot. Lows in the mid 70s. Highs in the mid 90s. Chance of rain 20%. Heat index values up to 100.
Sunday Night... Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 70s.
POP = Probability of Precipitation
Okaw Valley Park Radar Loop
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