Weather in Harristown, IL
Updated 2026-08-11 12:00 local time · ZIP codes 62537
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
84°2% rain95°2% rain95°2% rain95°2% rain92°2% rain93°2% rain92°2% rain89°3% rain
85°3% rain82°5% rain81°7% rain80°7% 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 7%).
It feels like 87°F with winds near 13 mph.
85°F, 3% rain chance and 9 mph wind.
Visibility is around 10 mi; gusts may reach 22 mph.
Current temperature is 84°F, wind 13 mph, rain chance up to 7%.
UV index is 4. Sunscreen and sunglasses are sensible for longer outdoor time.
Harristown weather today
Sunny and 84°F in Harristown, IL. Today's high is 95°F with a 5% rain chance. Winds are around 13 mph with gusts near 17 mph. Relative humidity is 70%, pressure is 29.97 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Harristown
Sunrise is at 06:04 AM and sunset is at 07:58 PM. Tomorrow's forecast calls for Sunny with a high near 81°F and a low near 70°F. The maximum rain chance is 66%.