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Colchester High School, IL 7-Day Night Weather Forecast
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Colchester High School, IL Weather Forecast
Colchester High School, IL Weather Forecast Date: 541 PM CDT Sat Aug 08 2026
The area/counties/county of: Mcdonough, including the city of Macomb.or toggle through each period.
Tonight... Mostly clear. Lows in the upper 60s. Light and variable winds, becoming southeast around 5 mph after midnight.
Sunday... A slight chance of thunderstorms in the morning. Mostly sunny with a slight chance of showers. Humid with highs in the upper 80s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20%. Heat index values up to 104 in the afternoon.
Sunday Night... Mostly clear in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Humid with lows in the lower 70s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50%. Heat index values up to 103 early in the evening.
Monday... Mostly sunny. Humid with highs in the upper 80s. Southwest winds 5 to 10 mph. Heat index values up to 106 in the afternoon.
Monday Night... Partly cloudy. Humid with lows in the lower 70s. South winds around 5 mph. Heat index values up to 105 early in the evening.
Tuesday... Mostly sunny. Highs in the upper 80s. Heat index values up to 105 in the afternoon.
Tuesday Night... Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Highs in the mid 80s. Chance of rain 50%. Heat index values up to 100.
Wednesday... Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Highs in the mid 80s. Chance of rain 50%. Heat index values up to 100.
Thursday... Partly sunny in the morning, then becoming mostly cloudy. A chance of showers. A chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 50%.
Thursday Night... Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the lower 60s. Chance of rain 60%.
Friday... Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 40%.
Friday Night... Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 60s. Chance of rain 50%.
POP = Probability of Precipitation
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