After being hit by heavy snow December 18 and 19, northeast Iowa was impacted by another winter storm December 20 through 21. Highest snowfall amounts were roughly 4 to 6 inches, with specific reports of 6.5 inches at Cresco (Howard County) and 5.9 inches at Clermont (Fayette County).
Northwest winds gusting to 30 to 40 mph in the wake of an arctic cold front produced near white-out conditions, along with 2 to 4 foot drifts. In addition to the wind and snow, sharply falling temperatures resulted in bitterly cold wind chills of 20 below to 40 below, which lingered into December 22.

Cold/Wind Chill in CLAYTON, IOWA
From 21-DEC-08 18:00:00 to 22-DEC-08 10:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Lowest wind chill values hit -43F at Monona.

Cold/Wind Chill in HOWARD, IOWA
From 21-DEC-08 18:00:00 to 22-DEC-08 10:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Cresco had an unofficial wind chill of -38F.

Cold/Wind Chill in FLOYD, IOWA
From 21-DEC-08 18:00:00 to 22-DEC-08 10:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A wind chill of -35F was reported at Charles City.

Cold/Wind Chill in MITCHELL, IOWA
From 21-DEC-08 18:00:00 to 22-DEC-08 10:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Osage hit an unofficial wind chill of -34F.

Cold/Wind Chill in FAYETTE, IOWA
From 21-DEC-08 18:00:00 to 22-DEC-08 10:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Lowest wind chill values included -41F at West Union and -35F at Oelwein.

Cold/Wind Chill in CHICKASAW, IOWA
From 21-DEC-08 18:00:00 to 22-DEC-08 10:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Lowest wind chill values included -39F at New Hampton.

Cold/Wind Chill in WINNESHIEK, IOWA
From 21-DEC-08 18:00:00 to 22-DEC-08 10:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Lowest wind chill values included -38F near Decorah.

Winter Storm in MITCHELL, IOWA
From 20-DEC-08 09:00:00 to 21-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Cold/Wind Chill in ALLAMAKEE, IOWA
From 21-DEC-08 18:00:00 to 22-DEC-08 10:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Winter Storm in CHICKASAW, IOWA
From 20-DEC-08 10:00:00 to 21-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winter Storm in FAYETTE, IOWA
From 20-DEC-08 10:30:00 to 21-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winter Storm in FLOYD, IOWA
From 20-DEC-08 09:00:00 to 21-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winter Storm in HOWARD, IOWA
From 20-DEC-08 09:30:00 to 21-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winter Storm in ALLAMAKEE, IOWA
From 20-DEC-08 09:45:00 to 21-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winter Storm in WINNESHIEK, IOWA
From 20-DEC-08 10:30:00 to 21-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Winter Storm in CLAYTON, IOWA
From 20-DEC-08 10:30:00 to 21-DEC-08 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public