High temperatures were below freezing for the first 18 days of the month.  February 4th and 5th were the coldest with high temperatures at Chicago Ohare Airport of only 2 above on the 4th and 5 above on the 5th.  The coldest low temperature at Chicago Ohare Airport occurred on the morning of the 5th, 10 degrees below zero.  Wind chill readings ranged from 20 below zero to 30 below zero on the 4th, 5th and 6th.

Extreme Cold/Wind Chill in DU PAGE, ILLINOIS
From 03-FEB-07 18:00:00 to 06-FEB-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Wheaton reported a low temperature of 6 below zero on the 4th, 11 below zero on the 5th and 10 below zero on the 6th.

Extreme Cold/Wind Chill in LA SALLE, ILLINOIS
From 03-FEB-07 18:00:00 to 06-FEB-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Earlville reported a low temperature of 5 below zero on the 4th, 10 below zero on the 5th and 9 below zero on the 6th.

Extreme Cold/Wind Chill in KENDALL, ILLINOIS
From 03-FEB-07 18:00:00 to 06-FEB-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Yorkville reported a low temperature of 5 below zero on the 4th, 10 below zero on the 5th and 9 below zero on the 6th.

Extreme Cold/Wind Chill in GRUNDY, ILLINOIS
From 03-FEB-07 00:00:00 to 06-FEB-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Morris reported a low temperature of 7 above zero on the 3rd, 4 below zero on the 4th, 8 below zero on the 5th, 8 below zero on the 6th.  A 24 year old man was found dead outside a motel from the cold.

Extreme Cold/Wind Chill in WILL, ILLINOIS
From 03-FEB-07 18:00:00 to 06-FEB-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Joliet reported a low temperature of 4 below zero on the 4th, 9 below zero on the 5th and 9 below zero on the 6th.

Extreme Cold/Wind Chill in BOONE, ILLINOIS
From 03-FEB-07 18:00:00 to 06-FEB-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Extreme Cold/Wind Chill in LAKE, ILLINOIS
From 03-FEB-07 18:00:00 to 06-FEB-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Antioch reported a low of 10 below zero on the 4th, 14 below zero on 5th and 13 below zero on the 6th.

Extreme Cold/Wind Chill in OGLE, ILLINOIS
From 03-FEB-07 18:00:00 to 06-FEB-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Polo reported a low temperature of 11 below zero on the 4th, 15 below zero on the 5th and 13 below zero on the 6th.

Extreme Cold/Wind Chill in LEE, ILLINOIS
From 03-FEB-07 18:00:00 to 06-FEB-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Dixon reported a low temperature of 9 below zero on the 4th, 15 below zero on the 5th and 14 below zero on the 6th.

Extreme Cold/Wind Chill in WINNEBAGO, ILLINOIS
From 03-FEB-07 18:00:00 to 06-FEB-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Rockford Airport reported a low temperature of 9 below zero on the 4th, 13 below zero on the 5th and 13 below zero on the 6th.

Extreme Cold/Wind Chill in MCHENRY, ILLINOIS
From 03-FEB-07 18:00:00 to 06-FEB-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Crystal Lake reported a low temperature of 9 below zero on the 4th, 14 below zero on the 5th and 13 below zero on the 6th.

Extreme Cold/Wind Chill in DE KALB, ILLINOIS
From 03-FEB-07 18:00:00 to 06-FEB-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

DeKalb reported a low temperature of 9 below zero on the 4th, 13 below zero on the 5th and 13 below zero on the 6th.

Extreme Cold/Wind Chill in KANE, ILLINOIS
From 03-FEB-07 18:00:00 to 06-FEB-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Aurora reported a low temperature of 7 below zero on the 4th, 11 below zero on the 5th and 6 below zero on the 6th.

Extreme Cold/Wind Chill in COOK, ILLINOIS
From 01-FEB-07 00:00:00 to 19-FEB-07 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official