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City of St. Clair, MOSt. Clair, MO Weather Forecast
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St. Clair Weather Forecast
| TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  | | | | |  | | |  | |
| Partly Cloudy | Partly Sunny | Mostly Cloudy | Partly Sunny | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Clear | Mostly Clear | Partly Cloudy | Partly Cloudy | Mostly Cloudy |
| Lo: 49°FLo: 9°C | Hi: 79°FHi: 26°C | Lo: 50°FLo: 10°C | Hi: 79°FHi: 26°C | Lo: 49°FLo: 9°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C Lo: 51°FLo: 11°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 80°FHi: 27°C Lo: 55°FLo: 13°C | Hi: 80°FHi: 27°C Lo: 55°FLo: 13°C | Lo: 55°FLo: 13°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 739 PM CDT Sat Oct 24 2026 
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Instant definitions for any meteorological term.
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Issued: 557 PM CDT Sat Oct 24 2026
Key Messages
- Seasonably warm and predominantly dry conditions will persist through next week.
Aviation
/18Z TAFS THROUGH 00Z MONDAY/... Issued at 554 PM CDT Sat Oct 24 2026
Dry and mainly VFR conditions are expected to continue through the period. The potential for river fog recurring at SUS or CPS remains too low to include in this issuance of the TAFs. Otherwise winds will remain below 10 knots.
Watches / Warnings / Advisories
/WARNINGS/ADVISORIES... MO...None. IL...None.