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Flat Rock, IL 7-Day Night Weather Forecast
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Flat Rock, IL Weather Forecast
Flat Rock, IL Weather Forecast Date: 337 AM CDT Sat Sep 05 2026
The area/counties/county of: Crawford, including the city of Robinson.or toggle through each period.
Today... Sunny. A slight chance of showers and thunderstorms this afternoon. Hot with highs in the upper 90s. Northwest winds 5 to 10 mph. Chance of rain 20%. Heat index values up to 106.
Tonight... Partly cloudy. A slight chance of showers and thunderstorms in the evening. Humid with lows in the upper 60s. Northeast winds 5 to 10 mph. Chance of rain 20%.
Sunday... Sunny. Not as warm. Less humid with highs in the upper 80s. Northeast winds around 10 mph.
Sunday Night... Mostly clear. Lows in the lower 60s. Northeast winds 10 to 15 mph, diminishing to around 5 mph after midnight.
Labor Day... Sunny. Highs in the upper 80s. Northeast winds 5 to 10 mph.
Monday Night... Mostly clear. Hot. Lows in the mid 60s. Highs in the mid 90s.
Tuesday... Mostly clear. Hot. Lows in the mid 60s. Highs in the mid 90s.
Tuesday Night... Mostly clear. Hot. Lows in the lower 70s. Highs around 100.
Wednesday... Mostly clear. Hot. Lows in the lower 70s. Highs around 100.
Wednesday Night... Mostly clear in the evening, then becoming partly cloudy. A chance of showers after midnight. Lows in the upper 60s. Chance of rain 40%.
Thursday... Mostly sunny with a 50% chance of showers. Not as warm with highs in the upper 80s.
Thursday Night... Partly cloudy in the evening, then clearing. Lows in the lower 60s.
POP = Probability of Precipitation
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