minnesota frost dates, county by county.

Aitkin County

Last spring: 05-04 · First fall: 10-08

Anoka County

Last spring: 04-25 · First fall: 10-13

Becker County

Last spring: 04-26 · First fall: 10-13

Beltrami County

Last spring: 05-02 · First fall: 10-15

Benton County

Last spring: 05-01 · First fall: 10-07

Big Stone County

Last spring: 04-21 · First fall: 10-19

Blue Earth County

Last spring: 04-19 · First fall: 10-20

Brown County

Last spring: 04-24 · First fall: 10-12

Carlton County

Last spring: 05-12 · First fall: 10-03

Carver County

Last spring: 04-23 · First fall: 10-16

Cass County

Last spring: 04-26 · First fall: 10-18

Chippewa County

Last spring: 04-26 · First fall: 10-10

Chisago County

Last spring: 05-06 · First fall: 10-04

Clay County

Last spring: 04-28 · First fall: 10-14

Clearwater County

Last spring: 05-04 · First fall: 10-05

Cook County

Last spring: 05-04 · First fall: 10-24

Cottonwood County

Last spring: 04-19 · First fall: 10-21

Crow Wing County

Last spring: 05-02 · First fall: 10-08

Dakota County

Last spring: 04-22 · First fall: 10-17

Dodge County

Last spring: 05-02 · First fall: 10-05

Douglas County

Last spring: 04-21 · First fall: 10-19

Faribault County

Last spring: 04-20 · First fall: 10-17

Fillmore County

Last spring: 05-04 · First fall: 10-05

Freeborn County

Last spring: 04-15 · First fall: 10-19

Goodhue County

Last spring: 04-28 · First fall: 10-08

Grant County

Last spring: 04-24 · First fall: 10-11

Hennepin County

Last spring: 04-19 · First fall: 10-22

Houston County

Last spring: 04-18 · First fall: 10-23

Hubbard County

Last spring: 05-04 · First fall: 10-04

Isanti County

Last spring: 04-21 · First fall: 10-15

Itasca County

Last spring: 05-03 · First fall: 10-14

Jackson County

Last spring: 04-23 · First fall: 10-14

Kanabec County

Last spring: 04-28 · First fall: 10-09

Kandiyohi County

Last spring: 04-19 · First fall: 10-19

Kittson County

Last spring: 04-30 · First fall: 10-06

Koochiching County

Last spring: 05-10 · First fall: 10-01

Lac qui Parle County

Last spring: 04-23 · First fall: 10-12

Lake County

Last spring: 05-02 · First fall: 10-10

Lake of the Woods County

Last spring: 05-04 · First fall: 10-06

Le Sueur County

Last spring: 04-22 · First fall: 10-13

Lincoln County

Last spring: 04-27 · First fall: 10-13

Lyon County

Last spring: 04-27 · First fall: 10-13

Mahnomen County

Last spring: 04-29 · First fall: 10-08

Marshall County

Last spring: 04-28 · First fall: 10-12

Martin County

Last spring: 04-16 · First fall: 10-24

McLeod County

Last spring: 04-20 · First fall: 10-15

Meeker County

Last spring: 04-27 · First fall: 10-10

Mille Lacs County

Last spring: 04-28 · First fall: 10-11

Morrison County

Last spring: 04-24 · First fall: 10-16

Mower County

Last spring: 04-27 · First fall: 10-09

Murray County

Last spring: 04-28 · First fall: 10-08

Nicollet County

Last spring: 04-20 · First fall: 10-18

Nobles County

Last spring: 04-23 · First fall: 10-15

Norman County

Last spring: 05-02 · First fall: 10-06

Olmsted County

Last spring: 04-18 · First fall: 10-17

Otter Tail County

Last spring: 04-28 · First fall: 10-15

Pennington County

Last spring: 05-05 · First fall: 10-08

Pine County

Last spring: 04-30 · First fall: 10-10

Pipestone County

Last spring: 04-25 · First fall: 10-12

Polk County

Last spring: 04-30 · First fall: 10-08

Pope County

Last spring: 05-01 · First fall: 10-06

Ramsey County

Last spring: 04-14 · First fall: 10-31

Red Lake County

Last spring: 04-30 · First fall: 10-08

Redwood County

Last spring: 04-24 · First fall: 10-13

Renville County

Last spring: 04-27 · First fall: 10-10

Rice County

Last spring: 04-26 · First fall: 10-13

Rock County

Last spring: 04-21 · First fall: 10-16

Roseau County

Last spring: 05-07 · First fall: 10-03

Scott County

Last spring: 04-22 · First fall: 10-16

Sherburne County

Last spring: 04-28 · First fall: 10-08

Sibley County

Last spring: 04-14 · First fall: 10-24

St. Louis County

Last spring: 05-03 · First fall: 10-13

Stearns County

Last spring: 04-24 · First fall: 10-18

Steele County

Last spring: 04-25 · First fall: 10-18

Stevens County

Last spring: 04-24 · First fall: 10-11

Swift County

Last spring: 04-26 · First fall: 10-12

Todd County

Last spring: 05-04 · First fall: 10-05

Traverse County

Last spring: 04-21 · First fall: 10-20

Wabasha County

Last spring: 04-28 · First fall: 10-12

Wadena County

Last spring: 04-30 · First fall: 10-10

Waseca County

Last spring: 04-20 · First fall: 10-14

Washington County

Last spring: 04-20 · First fall: 10-23

Watonwan County

Last spring: 04-18 · First fall: 10-17

Wilkin County

Last spring: 04-24 · First fall: 10-14

Winona County

Last spring: 04-09 · First fall: 10-29

Wright County

Last spring: 04-19 · First fall: 10-21

Yellow Medicine County

Last spring: 04-26 · First fall: 10-10