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Gillum, IL 7-Day Weather Forecast
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Gillum Weather Forecast
Gillum, IL Weather Forecast Date: 127 AM CDT Thu Sep 17 2026
Weather forecast for Gillum, IL
Tonight Lo: 70°F Lo: 21°C |
Tonight... Mostly cloudy with a chance of showers and thunderstorms. Near steady temperature in the lower 70s. East winds around 5 mph. Chance of rain 50%. |
Thu Hi: 89°FHi: 32°C Lo: 69°F Lo: 21°C |
Thursday... Mostly cloudy with a chance of showers and thunderstorms in the morning, then partly sunny in the afternoon. Humid with highs in the upper 80s. Northeast winds 5 to 10 mph, becoming west in the afternoon. Chance of rain 50%. |
Fri Hi: 81°FHi: 27°C Lo: 69°F Lo: 21°C |
Friday... Mostly cloudy with a chance of showers in the morning, then partly sunny in the afternoon. Highs in the lower 80s. East winds 5 to 10 mph. Chance of rain 40%. |
Sat Hi: 90°FHi: 32°C Lo: 69°F Lo: 21°C |
Saturday... Mostly sunny in the morning, then becoming mostly cloudy. Highs around 90. |
| Sun Hi: 80°FHi: 27°C Lo: 61°F Lo: 16°C |
Sunday... Partly sunny in the morning, then becoming mostly cloudy. A chance of showers. Not as warm with highs around 80. Chance of rain 50%. |
| Mon Hi: 71°FHi: 22°C Lo: 55°F Lo: 13°C |
Monday... Showers likely with a chance of thunderstorms in the morning, then a chance of showers in the afternoon. Highs in the lower 70s. Chance of rain 60%. |
| Tue Hi: 71°FHi: 22°C Lo: 55°F Lo: 13°C |
Tuesday... Mostly cloudy. Lows in the mid 50s. Highs in the lower 70s. |
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