Weather in Mendon, IL
Updated 2026-08-11 11:00 local time · ZIP codes 62351
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
83°4% rain94°3% rain95°2% rain96°2% rain97°1% rain97°1% rain97°1% rain95°1% rain91°2% rain87°3% rain
84°3% rain82°5% 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 5%).
It feels like 87°F with winds near 17 mph.
87°F, 3% rain chance and 7 mph wind.
Visibility is around 10 mi; gusts may reach 24 mph.
Current temperature is 83°F, wind 17 mph, rain chance up to 5%.
UV index is 5. Sunscreen and sunglasses are sensible for longer outdoor time.
Mendon weather today
Sunny and 83°F in Mendon, IL. Today's high is 97°F with a 4% rain chance. Winds are around 17 mph with gusts near 20 mph. Relative humidity is 74%, pressure is 29.96 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Mendon
Sunrise is at 06:12 AM and sunset is at 08:07 PM. Tomorrow's forecast calls for Sunny with a high near 87°F and a low near 72°F. The maximum rain chance is 60%.