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Collison Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  | | | |  |  | | | |  |
| Mostly Clear | Partly Sunny | Partly Cloudy | Partly Sunny | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Sunny | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy |
| Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C | Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C | Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Hi: 79°FHi: 26°C Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C Lo: 51°FLo: 11°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Sun Oct 25 2026 
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Issued: 205 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...