The first freeze of the season brought an end to the growing season. Low temperatures in Southern Illinois were from 21-29 degrees. A cold front plunged into the Deep South, resulting in northwesterly winds bringing in strong cold air advection late in the day on the 30th. An approaching secondary cold front and a 1036 mb high over the Dakotas reinforced the cold air, with widespread hard freeze conditions Halloween morning.

Frost/Freeze in ALEXANDER, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in EDWARDS, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in FRANKLIN, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in GALLATIN, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in HAMILTON, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in HARDIN, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in JACKSON, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in JEFFERSON, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in JOHNSON, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in MASSAC, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in PERRY, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in POPE, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in PULASKI, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in SALINE, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in UNION, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in WABASH, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in WAYNE, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in WHITE, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Frost/Freeze in WILLIAMSON, ILLINOIS
From 30-OCT-23 21:00:00 to 31-OCT-23 08:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS