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Gillum, IL 7-Day Weather Forecast
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Gillum Weather Forecast
Gillum, IL Weather Forecast Date: 737 PM CDT Tue Sep 15 2026
Weather forecast for Gillum, IL
Tonight Lo: 69°F Lo: 21°C |
Tonight... Thunderstorms likely. A chance of showers this evening, then showers after midnight. Lows in the upper 60s. Northeast winds 5 to 10 mph. Chance of rain 90%. |
Wed Hi: 81°FHi: 27°C Lo: 70°F Lo: 21°C |
Wednesday... Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the morning. Not as warm. Humid with highs in the lower 80s. Northeast winds 5 to 10 mph. Chance of rain 50%. |
Thu Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Thursday... Mostly cloudy with a chance of showers in the morning, then partly sunny in the afternoon. Humid with highs in the mid 80s. West winds 5 to 10 mph. Chance of rain 50%. |
| Fri Hi: 85°FHi: 29°C Lo: 69°F Lo: 21°C |
Friday... Mostly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 40%. |
Sat Hi: 89°FHi: 32°C Lo: 61°F Lo: 16°C |
Saturday... Partly sunny. Highs in the upper 80s. |
| Sun Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Sunday... Mostly cloudy. A chance of showers. Highs in the lower 80s. Lows in the lower 60s. Chance of rain 50%. |
| Mon Hi: 75°FHi: 24°C Lo: 59°F Lo: 15°C |
Monday... Partly sunny with a chance of showers in the morning, then mostly cloudy in the afternoon. Highs in the mid 70s. Chance of rain 40%. |
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