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Spring Slough, IL Weather Forecast
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Spring Slough Weather Forecast
| REST OF TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | FRIDAY | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY |
 | |  |  | |  | |  |  | | |  |
| Chance of Showers | Chance of Showers | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Chance of Showers | Chance of Showers | Partly Sunny | Partly Cloudy | Partly Cloudy |
| Lo: 59°FLo: 15°C | Hi: 65°FHi: 18°C | Lo: 50°FLo: 10°C | Hi: 69°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 70°FHi: 21°C Lo: 55°FLo: 13°C | Hi: 70°FHi: 21°C Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C | Hi: 79°FHi: 26°C Lo: 59°FLo: 15°C |
| POP: 50% | POP: 50% | POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1131 PM CDT Mon Sep 21 2026 
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Instant definitions for any meteorological term.
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Issued: 1232 AM CDT Tue Sep 22 2026
Key Messages
- An upper low over the northern plains will continue to roll through the area through Tuesday morning, with mostly light amounts of rain and drizzle. Then expected a precip break for Wednesday thru Friday.
- Pleasant early fall weather is expected for Wednesday through Friday.
Aviation
/06Z TAFS THROUGH 06Z WEDNESDAY/... Issued at 1228 AM CDT Tue Sep 22 2026
Upper low spiraling overhead continue to generate MVFR to low VFR CIGs acrs the area, as well as sctrd light to moderate showers. Som...