The prolonged period of hazardous heat and humidity that began on June 29th persisted through the first several days of July. The most dangerous heat index values occurred on July 5th, when afternoon heat indices peaked around 110 degrees. Otherwise, the peak heat index each afternoon was near 105. Actual air temperatures were mostly in the lower to mid 90's. South winds ahead of a cold front brought heat and humidity on the 1st. The front stalled over the lower Ohio Valley on the 2nd, then returned northward. Another cold front approached on the 5th, preceded by hot and humid southwest winds.

Heat in WAYNE, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in WHITE, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in WILLIAMSON, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in ALEXANDER, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in EDWARDS, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in FRANKLIN, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in GALLATIN, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in HAMILTON, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in HARDIN, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in JACKSON, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in JEFFERSON, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in JOHNSON, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in MASSAC, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in PERRY, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in POPE, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in PULASKI, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in SALINE, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in UNION, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in WABASH, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in WAYNE, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in WHITE, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in WILLIAMSON, ILLINOIS
From 05-JUL-18 10:00:00 to 05-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in ALEXANDER, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in EDWARDS, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in FRANKLIN, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in GALLATIN, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in HAMILTON, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in HARDIN, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in JACKSON, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in JEFFERSON, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in JOHNSON, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in MASSAC, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in PERRY, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in POPE, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in PULASKI, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in SALINE, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in UNION, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in WABASH, ILLINOIS
From 01-JUL-18 00:00:00 to 05-JUL-18 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet