Frostline.info

Frost line depth in Michigan

Estimated frost depth in typical soil runs from 35″ to 53″ across Michigan's 83 counties. Pick your county or enter a ZIP code for a local estimate.

Deepest frost

  1. Ontonagon County 53″
  2. Gogebic County 52″
  3. Iron County 51″
  4. Baraga County 50″
  5. Houghton County 50″

Mildest

  1. Macomb County 35″
  2. Wayne County 35″
  3. Ottawa County 35″
  4. St. Clair County 35″
  5. Van Buren County 36″

Frost depth by county

CountyEst. frost (typical soil)Typical code range
Alcona County43″36–54″
Alger County46″36–60″
Allegan County37″30–48″
Alpena County41″36–54″
Antrim County42″36–54″
Arenac County42″36–54″
Baraga County50″42–60″
Barry County38″30–48″
Bay County39″30–48″
Benzie County41″36–54″
Berrien County36″30–48″
Branch County38″30–48″
Calhoun County37″30–48″
Cass County36″30–48″
Charlevoix County43″36–54″
Cheboygan County44″36–54″
Chippewa County48″42–60″
Clare County42″36–54″
Clinton County37″30–48″
Crawford County45″36–54″
Delta County44″36–54″
Dickinson County49″42–60″
Eaton County39″36–48″
Emmet County46″36–60″
Genesee County38″30–48″
Gladwin County41″36–54″
Gogebic County52″42–66″
Grand Traverse County42″36–54″
Gratiot County38″30–48″
Hillsdale County37″30–48″
Houghton County50″42–60″
Huron County39″36–48″
Ingham County38″30–48″
Ionia County38″30–48″
Iosco County43″36–54″
Iron County51″42–66″
Isabella County39″36–48″
Jackson County38″30–48″
Kalamazoo County36″30–48″
Kalkaska County43″36–54″
Kent County37″30–48″
Keweenaw County49″42–60″
Lake County41″36–54″
Lapeer County38″30–48″
Leelanau County42″36–54″
Lenawee County37″30–48″
Livingston County38″30–48″
Luce County46″36–60″
Mackinac County46″36–60″
Macomb County35″30–42″
Manistee County38″30–48″
Marquette County48″42–60″
Mason County39″30–48″
Mecosta County41″36–54″
Menominee County46″36–60″
Midland County38″30–48″
Missaukee County44″36–54″
Monroe County36″30–48″
Montcalm County39″30–48″
Montmorency County44″36–54″
Muskegon County36″30–48″
Newaygo County40″36–48″
Oakland County36″30–48″
Oceana County38″30–48″
Ogemaw County43″36–54″
Ontonagon County53″42–66″
Osceola County43″36–54″
Oscoda County44″36–54″
Otsego County45″36–54″
Ottawa County35″30–42″
Presque Isle County42″36–54″
Roscommon County44″36–54″
Saginaw County37″30–48″
Sanilac County38″30–48″
Schoolcraft County45″36–54″
Shiawassee County38″30–48″
St. Clair County35″30–42″
St. Joseph County37″30–48″
Tuscola County39″30–48″
Van Buren County36″30–48″
Washtenaw County36″30–48″
Wayne County35″30–42″
Wexford County44″36–54″

Common questions

What is the frost line depth in Michigan?

It ranges from about 35 inches in the mildest county to 53 inches in the coldest, in typical soil.

Which Michigan county has the deepest frost?

Ontonagon County, at about 53 inches in typical soil.