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Ofallon Community Park Weather Forecast
| REST OF TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | SATURDAY | SATURDAY NIGHT | SUNDAY |
 |  | | | |  |  | | |  | | |
| Partly Cloudy | Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Mostly Clear | Mostly Clear | Partly Sunny | Chance of T-Storm | Partly Sunny |
| Lo: 59°FLo: 15°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 91°FHi: 33°C |
| POP: 20% | POP: 30% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Mon Aug 24 2026 
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Issued: 1001 PM CDT Sun Aug 23 2026
Key Messages
- Seasonable temperatures in the 80s continue this week with mostly dry weather expected.
Aviation
/00Z TAFS THROUGH 06Z TUESDAY/... Issued at 957 PM CDT Sun Aug 23 2026
Cool overnight temperatures and light winds will provide ideal conditions for fog, particularly in river vallies. This will lead to a high chance for impacts at KJEF, KSUS, and KCPS. The threat of fog outside of river vallies is greatest across portions of central Illinois, leading to a threat of reduced visibilities at K...