Weather in Sullivan, IL
Updated 2026-08-11 10:15 local time · ZIP codes 61951
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
87°4% rain95°3% rain97°2% rain98°2% rain98°2% rain97°2% rain96°2% rain94°2% rain92°2% rain89°3% rain
85°4% rain83°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 95°F with winds near 13 mph.
85°F, 4% rain chance and 8 mph wind.
Visibility is around 6 mi; gusts may reach 23 mph.
Current temperature is 87°F, wind 13 mph, rain chance up to 5%.
UV index is 3. Sunscreen and sunglasses are sensible for longer outdoor time.
Sullivan weather today
Sunny and 87°F in Sullivan, IL. Today's high is 98°F with a 5% rain chance. Winds are around 13 mph with gusts near 17 mph. Relative humidity is 64%, pressure is 29.93 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Sullivan
Sunrise is at 06:03 AM and sunset is at 07:56 PM. Tomorrow's forecast calls for Sunny with a high near 82°F and a low near 70°F. The maximum rain chance is 72%.