Updated 2026-08-11 10:15 local time · ZIP codes 62948
Sunny
* WHAT...Dangerously hot conditions with peak heat index values up to 113 degrees. * WHERE...Perry IL County. * WHEN...Until 8 PM CDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Daily heat index values will remain elevated in the triple digits through next weekend.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
86°4% rain94°3% rain96°2% rain98°2% rain99°2% rain96°2% rain98°1% rain97°1% rain94°1% rain90°2% rain
86°4% rain84°4% rainRain chance stays relatively low over the next 12 hours (up to 4%).
It feels like 94°F with winds near 12 mph.
86°F, 4% rain chance and 10 mph wind.
Visibility is around 6 mi; gusts may reach 20 mph.
Current temperature is 86°F, wind 12 mph, rain chance up to 4%.
UV index is 4. Sunscreen and sunglasses are sensible for longer outdoor time.
Sunny and 86°F in Herrin, IL. Today's high is 99°F with a 4% rain chance. Winds are around 12 mph with gusts near 14 mph. Relative humidity is 66%, pressure is 30.01 inHg, and visibility is about 6 miles.
Sunrise is at 06:08 AM and sunset is at 07:54 PM. Tomorrow's forecast calls for Sunny with a high near 103°F and a low near 77°F. The maximum rain chance is 36%.
