Weather in Saint Peters, MO
Updated 2026-09-26 07:45 local time · ZIP codes 63376
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
62°13% rain62°13% rain62°13% rain64°12% rain65°11% rain
65°12% rain63°14% rain63°15% rain63°13% rain63°14% rain62°15% rain
61°26% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 26%).
It feels like 59°F with winds near 4 mph.
65°F, 11% rain chance and 3 mph wind.
Visibility is around 6 mi; gusts may reach 13 mph.
Current temperature is 62°F, wind 4 mph, rain chance up to 26%.
UV index is 0.
Local weather characteristics in Saint Peters
Missouri sits where different air masses often meet, producing hot humid summers, cold winter spells, rapid weather changes and frequent thunderstorms.
Saint Peters is part of the Midwest weather region. The forecast point is near 38.80°N latitude and 90.63°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Saint Peters weather today
Overcast and 62°F in Saint Peters, MO. Today's high is 65°F with a 41% rain chance. Winds are around 4 mph with gusts near 8 mph. Relative humidity is 55%, pressure is 30.12 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Saint Peters
Sunrise is at 06:53 AM and sunset is at 06:53 PM. Tomorrow's forecast calls for Sunny with a high near 77°F and a low near 59°F. The maximum rain chance is 36%.