Weather WorldGilson, IL Weather Forecast
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Gilson Weather Forecast
| REST OF TODAY | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
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| Partly Sunny | Partly Cloudy | Mostly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy |
| Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 50°FLo: 10°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C Lo: 55°FLo: 13°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 937 AM CDT Sun Oct 25 2026 
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Issued: 556 AM CDT Sun Oct 25 2026
Key Messages
- Temperatures will continue to be above normal this week, with highs in the mid to upper 70s, nearing 80 in some places later in the week. Normal highs for this time of year is around 61-65 degrees across central and southeastern IL.
Discussion
... Issued at 205 AM CDT Sun Oct 25 2026
The blocking pattern continues over the eastern half of the United States. A low pressure system is moving well off to the north of central IL, up in Canada, this weekend with a cold front sitting off to ou...