Weather in Grain Valley, MO
Updated 2026-09-26 11:00 local time · ZIP codes 64029
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
73°13% rain76°12% rain78°11% rain
79°37% rain76°15% rain
75°27% rain72°38% rain
70°33% rain70°48% rain
68°66% rain68°49% rain
67°28% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance reaches about 66% over the next 12 hours.
It feels like 69°F with winds near 11 mph.
73°F, 13% rain chance and 11 mph wind.
Visibility is around 6 mi; gusts may reach 21 mph.
Current temperature is 73°F, wind 11 mph, rain chance up to 66%.
UV index is 3.
Local weather characteristics in Grain Valley
Missouri sits where different air masses often meet, producing hot humid summers, cold winter spells, rapid weather changes and frequent thunderstorms.
Grain Valley is part of the Midwest weather region. The forecast point is near 39.02°N latitude and 94.20°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.
Grain Valley weather today
Overcast and 73°F in Grain Valley, MO. Today's high is 79°F with a 78% rain chance. Winds are around 11 mph with gusts near 15 mph. Relative humidity is 56%, pressure is 30.05 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Grain Valley
Sunrise is at 07:08 AM and sunset is at 07:08 PM. Tomorrow's forecast calls for Light rain shower with a high near 80°F and a low near 63°F. The maximum rain chance is 78%.