Weather WorldWjbm-Am Jerseyville, IL Weather Forecast
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Wjbm-Am Jerseyville Weather Forecast
| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  | | | | | | | |  |  |
| Mostly Clear | Mostly Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Clear | Clear | Mostly Clear | Mostly Clear | Partly Cloudy | Chance of Showers | Chance of T-Storm |
| Lo: 69°FLo: 21°C | Hi: 95°FHi: 35°C | Lo: 71°FLo: 22°C | Hi: 99°FHi: 37°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C Lo: 79°FLo: 26°C | Hi: 99°FHi: 37°C Lo: 79°FLo: 26°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C Lo: 75°FLo: 24°C | Lo: 75°FLo: 24°C | Hi: 99°FHi: 37°C | Hi: 91°FHi: 33°C Lo: 71°FLo: 22°C |
| POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 AM CDT Sun Aug 30 2026 
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Issued: 1142 PM CDT Sat Aug 29 2026
Key Messages
- A prolonged late season heatwave is expected Sunday through Thursday. While moderate humidity may mitigate heat impacts slightly, near-record warm actual temperatures (highs 96 to 102 degrees / lows 75 to 80 degrees) are forecast for 3 to 5 consecutive days.
Aviation
/06Z TAFS THROUGH 12Z MONDAY/... Issued at 1140 PM CDT Sat Aug 29 2026
The only potential threat this period is fog at KSUS pre- sunrise. Otherwise, dry and VFR flight conditions are expected through the period at all local...