Frost line depth in Natrona County, WY

How deep the ground freezes in Natrona County, WY

43 in. Dig to 43 in, just below the frost. Nearest NOAA station: Powder River #2, 11.8 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