Weather in Saint Clair, MO
Updated 2026-08-11 10:30 local time · ZIP codes 63077
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
87°4% rain96°3% rain98°2% rain100°1% rain101°1% rain101°1% rain101°1% rain98°2% rain97°1% rain92°2% rain87°3% rain
84°4% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 4%).
It feels like 94°F with winds near 12 mph.
87°F, 3% rain chance and 7 mph wind.
Visibility is around 6 mi; gusts may reach 16 mph.
Current temperature is 87°F, wind 12 mph, rain chance up to 4%.
UV index is 4. Sunscreen and sunglasses are sensible for longer outdoor time.
Saint Clair weather today
Sunny and 87°F in Saint Clair, MO. Today's high is 101°F with a 4% rain chance. Winds are around 12 mph with gusts near 14 mph. Relative humidity is 62%, pressure is 29.96 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Saint Clair
Sunrise is at 06:15 AM and sunset is at 08:03 PM. Tomorrow's forecast calls for Sunny with a high near 100°F and a low near 78°F. The maximum rain chance is 3%.