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Gilson, IL Weather Forecast
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Gilson Weather Forecast
| REST OF TODAY | TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT |
 |  | |  | | |  |  | | | | |
| Sunny | Chance of Showers | Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Partly Cloudy | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Chance of Showers |
| Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C Lo: 65°FLo: 18°C | Hi: 91°FHi: 33°C | Lo: 75°FLo: 24°C | Hi: 91°FHi: 33°C | Lo: 70°FLo: 21°C |
| POP: 20% | POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 737 AM CDT Fri Sep 04 2026 
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Issued: 555 AM CDT Fri Sep 4 2026
Key Messages
- An Extreme Heat Warning remains in effect areawide today and for parts of the area Saturday with dangerous heat index values between 100 and 110 degrees.
- There is a very low chance (10-15%) for an isolated shower or thunderstorm late this afternoon and evening.
Discussion
... Issued at 147 AM CDT Fri Sep 4 2026
Heat will continue to be our main concern over the next week. An Extreme Heat Warning remains in effect areawide through Friday. The Extreme Heat Warning will be maintained for t...