Frostline.info

Frost line depth in North Dakota

Estimated frost depth in typical soil runs from 53″ to 65″ across North Dakota's 54 counties. Pick your county or enter a ZIP code for a local estimate.

Deepest frost

  1. Cavalier County 65″
  2. Ramsey County 64″
  3. Towner County 63″
  4. Pembina County 63″
  5. Nelson County 63″

Mildest

  1. Bowman County 53″
  2. Slope County 53″
  3. Adams County 54″
  4. Billings County 55″
  5. Golden Valley County 55″

Frost depth by county

CountyEst. frost (typical soil)Typical code range
Adams County54″42–66″
Barnes County58″48–72″
Benson County63″54–78″
Billings County55″48–66″
Bottineau County63″54–78″
Bowman County53″42–66″
Burke County62″54–78″
Burleigh County58″48–72″
Cass County58″48–72″
Cavalier County65″54–78″
Dickey County56″48–72″
Divide County60″48–72″
Dunn County57″48–72″
Eddy County62″48–78″
Emmons County57″48–72″
Foster County62″48–78″
Golden Valley County55″48–66″
Grand Forks County61″48–78″
Grant County58″48–72″
Griggs County61″48–72″
Hettinger County55″48–66″
Kidder County59″48–72″
LaMoure County57″48–72″
Logan County58″48–72″
McHenry County61″48–72″
McIntosh County57″48–72″
McKenzie County58″48–72″
McLean County59″48–72″
McPherson County56″48–72″
Mercer County58″48–72″
Morton County57″48–72″
Mountrail County62″48–78″
Nelson County63″54–78″
Oliver County57″48–72″
Pembina County63″54–78″
Pierce County61″48–78″
Ramsey County64″54–78″
Ransom County56″48–72″
Renville County61″48–78″
Richland County57″48–72″
Rolette County63″54–78″
Sargent County57″48–72″
Sheridan County60″48–72″
Sioux County55″48–66″
Slope County53″42–66″
Stark County55″48–66″
Steele County61″48–78″
Stutsman County59″48–72″
Towner County63″54–78″
Traill County59″48–72″
Walsh County61″48–78″
Ward County60″48–72″
Wells County60″48–72″
Williams County61″48–72″

Common questions

What is the frost line depth in North Dakota?

It ranges from about 53 inches in the mildest county to 65 inches in the coldest, in typical soil.

Which North Dakota county has the deepest frost?

Cavalier County, at about 65 inches in typical soil.