Frost line depth in Fond du Lac County, WI

How deep the ground freezes in Fond du Lac County, WI

42 in. Dig to 42 in, just below the frost. Nearest NOAA station: Fond Du Lac Co Ap, 1.1 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