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Tompkins, IL Weather Forecast
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Tompkins Weather Forecast
| REST OF TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
 |  | | | | |  | | |  | | |
| Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Sunny | Chance of Showers | Mostly Sunny | Partly Cloudy |
| Hi: 91°FHi: 33°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 85°FHi: 29°C | Hi: 91°FHi: 33°C Lo: 65°FLo: 18°C | Hi: 91°FHi: 33°C Lo: 65°FLo: 18°C | Lo: 71°FLo: 22°C | Hi: 89°FHi: 32°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C |
| POP: 40% |
POP = Probability of Precipitation.
Weather Outlook Updated: 806 AM CDT Sat Sep 05 2026 
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Issued: 642 AM CDT Sat Sep 5 2026
Key Messages
- Dangerous heat continues through 7 PM this evening, with peak heat indices of 100 to 110 degrees. Extreme heat warnings and heat advisories are in effect.
- After a brief reprieve, heat and humidity will return on Tuesday and Wednesday. The overall pattern has a 55-70% probability of above normal temperatures through mid- September.
Aviation
/12Z TAFS THROUGH 12Z SUNDAY/... Issued at 642 AM CDT Sat Sep 5 2026
Mostly, if not entirely, VFR conditions are expected through the TAF period. The...