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Spin Lake Weather Forecast
| THIS AFTERNOON | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | WEDNESDAY | THURSDAY | FRIDAY |
 |  |  | |  |  |  | | | |
| Chance of Showers | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Showers | Chance of Showers | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Partly Sunny |
| Hi: 81°FHi: 27°C | Lo: 69°FLo: 21°C | Hi: 79°FHi: 26°C | Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 69°FHi: 21°C Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C |
| POP: 20% | POP: 20% | POP: 50% | POP: 50% | POP: 70% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 127 PM CDT Sat Sep 19 2026 
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Issued: 203 PM CDT Sat Sep 19 2026
Key Messages
- Overnight Rain & Thunderstorms: Showers and thunderstorms will build across northern Illinois tonight, mainly along and north of Interstate 80. Heavy rainfall over 1 inch carries a low chance (20% or less) across central Illinois, with rain tapering off by Sunday morning.
- Sunday Afternoon Storms: A few stronger thunderstorms may redevelop south of Interstate 72 late Sunday afternoon. Localized damaging winds and marginal hail will be the primary threats.
- Cooler & Mostly Dry Next Week...