Frostline.info

Frost line depth in Alabama

Estimated frost depth in typical soil runs from 5″ to 15″ across Alabama's 67 counties. Pick your county or enter a ZIP code for a local estimate.

Deepest frost

  1. DeKalb County 15″
  2. Jackson County 14″
  3. Limestone County 14″
  4. Madison County 13″
  5. Lauderdale County 13″

Mildest

  1. Baldwin County 5″
  2. Mobile County 5″
  3. Geneva County 6″
  4. Escambia County 6″
  5. Washington County 6″

Frost depth by county

CountyEst. frost (typical soil)Typical code range
Autauga County8″12–18″
Baldwin County5″12–18″
Barbour County6″12–18″
Bibb County9″12–18″
Blount County12″12–18″
Bullock County7″12–18″
Butler County7″12–18″
Calhoun County9″12–18″
Chambers County8″12–18″
Cherokee County13″12–18″
Chilton County9″12–18″
Choctaw County8″12–18″
Clarke County7″12–18″
Clay County9″12–18″
Cleburne County9″12–18″
Coffee County6″12–18″
Colbert County13″12–18″
Conecuh County7″12–18″
Coosa County9″12–18″
Covington County7″12–18″
Crenshaw County7″12–18″
Cullman County12″12–18″
Dale County6″12–18″
Dallas County7″12–18″
DeKalb County15″12–18″
Elmore County8″12–18″
Escambia County6″12–18″
Etowah County11″12–18″
Fayette County10″12–18″
Franklin County13″12–18″
Geneva County6″12–18″
Greene County8″12–18″
Hale County8″12–18″
Henry County6″12–18″
Houston County6″12–18″
Jackson County14″12–18″
Jefferson County10″12–18″
Lamar County9″12–18″
Lauderdale County13″12–18″
Lawrence County13″12–18″
Lee County7″12–18″
Limestone County14″12–18″
Lowndes County7″12–18″
Macon County8″12–18″
Madison County13″12–18″
Marengo County8″12–18″
Marion County11″12–18″
Marshall County13″12–18″
Mobile County5″12–18″
Monroe County7″12–18″
Montgomery County8″12–18″
Morgan County13″12–18″
Perry County7″12–18″
Pickens County9″12–18″
Pike County7″12–18″
Randolph County8″12–18″
Russell County7″12–18″
Shelby County9″12–18″
St. Clair County10″12–18″
Sumter County8″12–18″
Talladega County9″12–18″
Tallapoosa County8″12–18″
Tuscaloosa County9″12–18″
Walker County11″12–18″
Washington County6″12–18″
Wilcox County8″12–18″
Winston County12″12–18″

Common questions

What is the frost line depth in Alabama?

It ranges from about 5 inches in the mildest county to 15 inches in the coldest, in typical soil.

Which Alabama county has the deepest frost?

DeKalb County, at about 15 inches in typical soil.