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Horton Lake, IL Weather Forecast
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Horton Lake Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | SATURDAY | SATURDAY NIGHT |
 |  |  | |  | |  | | | | | |
| Chance of T-Storm | Sunny | Mostly Clear | Mostly Sunny | Showers | Chance of Showers | Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Clear | Mostly Sunny | Mostly Clear |
| Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C | Hi: 79°FHi: 26°C | Lo: 61°FLo: 16°C | Hi: 79°FHi: 26°C | Hi: 81°FHi: 27°C Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C Lo: 61°FLo: 16°C | Hi: 80°FHi: 27°C | Lo: 61°FLo: 16°C |
| POP: 40% | POP: 70% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 301 PM CDT Sun Aug 16 2026 
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Horton Lake Forecast Discussion
Issued: 640 PM CDT Sun Aug 16 2026
Key Messages
- A cold front has moved through, with gradually lower humidity arriving for tonight.
- High pressure will bring a period of much needed quiet and dry weather through much of Sunday and Monday.
- A shortwave will drag a cold front through the area Tuesday night into early Wednesday, bringing the chance for overnight storms. Some storms may be strong to severe, with severe winds being the main concern.
Aviation
/00Z TAFS THROUGH 00Z TUESDAY/... Issued at 638 PM C...