Frost line depth in St. Croix County, WI

How deep the ground freezes in St. Croix County, WI

57 in. Dig to 58 in, just below the frost. Nearest NOAA station: Baldwin, 5.3 mi.

Your building department sets the legal frost line depth (IRC Table R301.2(1)); footings must go below it (R403.1.4.1). Call them before you dig.

Code depth · Snow