Frostline.info

Frost line depth in Oklahoma

Estimated frost depth in typical soil runs from 10″ to 23″ across Oklahoma's 77 counties. Pick your county or enter a ZIP code for a local estimate.

Deepest frost

  1. Kay County 23″
  2. Ottawa County 23″
  3. Beaver County 22″
  4. Woodward County 22″
  5. Grant County 22″

Mildest

  1. Choctaw County 10″
  2. McCurtain County 11″
  3. Bryan County 11″
  4. Marshall County 11″
  5. Johnston County 11″

Frost depth by county

CountyEst. frost (typical soil)Typical code range
Adair County19″18–24″
Alfalfa County21″18–30″
Atoka County13″12–18″
Beaver County22″18–30″
Beckham County18″18–24″
Blaine County20″18–24″
Bryan County11″12–18″
Caddo County17″18–24″
Canadian County19″18–24″
Carter County12″12–18″
Cherokee County18″18–24″
Choctaw County10″12–18″
Cimarron County19″18–24″
Cleveland County17″18–24″
Coal County15″12–18″
Comanche County15″12–18″
Cotton County13″12–18″
Craig County22″18–30″
Creek County19″18–24″
Custer County19″18–24″
Delaware County21″18–30″
Dewey County21″18–30″
Ellis County21″18–30″
Garfield County21″18–30″
Garvin County15″12–18″
Grady County17″18–24″
Grant County22″18–30″
Greer County15″12–18″
Harmon County14″12–18″
Harper County21″18–30″
Haskell County16″12–24″
Hughes County16″12–24″
Jackson County14″12–18″
Jefferson County11″12–18″
Johnston County11″12–18″
Kay County23″18–30″
Kingfisher County20″18–24″
Kiowa County16″12–24″
Latimer County15″12–18″
Le Flore County15″12–18″
Lincoln County19″18–24″
Logan County19″18–24″
Love County12″12–18″
Major County20″18–24″
Marshall County11″12–18″
Mayes County20″18–30″
McClain County16″12–24″
McCurtain County11″12–18″
McIntosh County17″18–24″
Murray County13″12–18″
Muskogee County18″18–24″
Noble County21″18–30″
Nowata County21″18–30″
Okfuskee County16″12–24″
Oklahoma County18″18–24″
Okmulgee County18″18–24″
Osage County21″18–30″
Ottawa County23″18–30″
Pawnee County20″18–24″
Payne County21″18–30″
Pittsburg County16″12–24″
Pontotoc County14″12–18″
Pottawatomie County16″12–24″
Pushmataha County13″12–18″
Roger Mills County21″18–30″
Rogers County21″18–30″
Seminole County15″12–18″
Sequoyah County16″12–24″
Stephens County14″12–18″
Texas County21″18–30″
Tillman County14″12–18″
Tulsa County21″18–30″
Wagoner County20″18–24″
Washington County21″18–30″
Washita County18″18–24″
Woods County21″18–30″
Woodward County22″18–30″

Common questions

What is the frost line depth in Oklahoma?

It ranges from about 10 inches in the mildest county to 23 inches in the coldest, in typical soil.

Which Oklahoma county has the deepest frost?

Kay County, at about 23 inches in typical soil.