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Hennepin, IL Weather Forecast
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Hennepin Weather Forecast
| TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
 |  |  |  |  | |  | | | | |  |
| Chance of Showers | Chance of Showers | Mostly Cloudy | Partly Cloudy | Mostly Sunny | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy |
| Hi: 65°FHi: 18°C | Lo: 55°FLo: 13°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C Lo: 51°FLo: 11°C |
| POP: 30% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 526 AM CDT Mon Sep 21 2026 
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Issued: 535 AM CDT Mon Sep 21 2026
Key Messages
- An upper low over the northern plains will roll toward the area through Tuesday morning, leading to occasional showers and continued cool and cloudy conditions early to mid week. Then a precip break for Wednesday thru Friday.
- Expectations for a few nice dry early Fall days are growing for mid to late week, with highs in the 60s/near 70 and lows in the 40s/50s.
Aviation
/12Z TAFS THROUGH 12Z TUESDAY/... Issued at 530 AM CDT Mon Sep 21 2026
Predominantly MVFR conditions (mostly for CIGs) ...