Weather World
City of St. Clair, MOSt. Clair, MO 7-Day Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
St. Clair Weather Forecast
St. Clair, MO Weather Forecast Date: 602 AM CDT Sun Sep 06 2026
Weather forecast for St. Clair, MO
Today Hi: 91°FHi: 33°C Lo: 61°F Lo: 16°C |
Today... Sunny. Highs in the lower 90s. Northeast winds around 5 mph. |
| Labor Day Hi: 89°FHi: 32°C Lo: 61°F Lo: 16°C |
Labor Day... Sunny. Highs in the upper 80s. East winds around 5 mph. |
| Tue Hi: 95°FHi: 35°C Lo: 71°F Lo: 22°C |
Tuesday... Sunny. Highs in the mid 90s. South winds around 5 mph. |
| Wed Hi: 99°FHi: 37°C Lo: 69°F Lo: 21°C |
Wednesday... Mostly clear. Hot. Lows in the lower 70s. Highs in the upper 90s. Heat index values up to 105. |
Thu Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Thursday... Showers likely with a chance of thunderstorms in the morning, then partly sunny with a chance of showers with a slight chance of thunderstorms in the afternoon. Cooler with highs in the mid 80s. Chance of rain 70%. |
Fri Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Friday... Sunny with a 20% chance of showers. Highs in the mid 80s. |
| Sat Hi: 89°FHi: 32°C |
Saturday... Sunny. A slight chance of showers in the morning. Highs in the upper 80s. Chance of rain 20%. |
St. Clair Radar Loop
Use the map search tool if you want to place a location marker on the radar map...