Weather in Sumner, IL
Updated 2026-09-26 10:45 local time · ZIP codes 62466
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
63°12% rain
71°2% rain
74°1% rain76°1% rain78°1% rain78°1% rain77°9% rain74°9% rain
70°8% rain66°10% rain65°10% rain64°9% 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 10%).
It feels like 58°F with winds near 7 mph.
71°F, 2% rain chance and 7 mph wind.
Visibility is around 6 mi; gusts may reach 18 mph.
Current temperature is 63°F, wind 7 mph, rain chance up to 10%.
UV index is 3.
Local weather characteristics in Sumner
Illinois has four distinct seasons with hot, humid summers, cold winters, strong frontal changes and frequent spring and summer thunderstorms.
Sumner is part of the Midwest weather region. The forecast point is near 38.72°N latitude and 87.86°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.
Sumner weather today
Overcast and 63°F in Sumner, IL. Today's high is 78°F with a 7% rain chance. Winds are around 7 mph with gusts near 9 mph. Relative humidity is 52%, pressure is 30.17 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Sumner
Sunrise is at 06:42 AM and sunset is at 06:42 PM. Tomorrow's forecast calls for Overcast with a high near 77°F and a low near 55°F. The maximum rain chance is 6%.