michigan frost dates, county by county.

Alcona County

Last spring: 04-27 · First fall: 10-29

Alger County

Last spring: 05-07 · First fall: 10-27

Allegan County

Last spring: 04-05 · First fall: 11-14

Alpena County

Last spring: 04-23 · First fall: 10-31

Antrim County

Last spring: 05-08 · First fall: 10-16

Arenac County

Last spring: 04-24 · First fall: 10-25

Baraga County

Last spring: 05-14 · First fall: 10-06

Barry County

Last spring: 04-24 · First fall: 10-26

Bay County

Last spring: 04-23 · First fall: 10-29

Benzie County

Last spring: 04-20 · First fall: 11-07

Berrien County

Last spring: 04-07 · First fall: 11-07

Branch County

Last spring: 04-21 · First fall: 10-28

Calhoun County

Last spring: 04-19 · First fall: 11-01

Cass County

Last spring: 04-24 · First fall: 10-26

Charlevoix County

Last spring: 04-30 · First fall: 11-02

Cheboygan County

Last spring: 04-30 · First fall: 10-22

Chippewa County

Last spring: 05-08 · First fall: 10-12

Clare County

Last spring: 04-30 · First fall: 10-17

Clinton County

Last spring: 04-15 · First fall: 11-05

Crawford County

Last spring: 05-10 · First fall: 10-09

Delta County

Last spring: 05-05 · First fall: 10-17

Dickinson County

Last spring: 05-11 · First fall: 10-05

Eaton County

Last spring: 04-20 · First fall: 10-28

Emmet County

Last spring: 05-01 · First fall: 10-31

Genesee County

Last spring: 04-22 · First fall: 10-27

Gladwin County

Last spring: 04-30 · First fall: 10-17

Gogebic County

Last spring: 05-12 · First fall: 10-07

Grand Traverse County

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

Gratiot County

Last spring: 04-20 · First fall: 10-28

Hillsdale County

Last spring: 04-23 · First fall: 10-26

Houghton County

Last spring: 05-14 · First fall: 10-07

Huron County

Last spring: 04-21 · First fall: 11-05

Ingham County

Last spring: 04-15 · First fall: 10-30

Ionia County

Last spring: 04-22 · First fall: 10-27

Iosco County

Last spring: 04-28 · First fall: 10-17

Iron County

Last spring: 05-24 · First fall: 09-25

Isabella County

Last spring: 04-19 · First fall: 11-03

Jackson County

Last spring: 04-20 · First fall: 10-28

Kalamazoo County

Last spring: 04-17 · First fall: 11-01

Kalkaska County

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

Kent County

Last spring: 04-27 · First fall: 10-23

Keweenaw County

Last spring: 05-02 · First fall: 10-14

Lake County

Last spring: 05-18 · First fall: 10-08

Lapeer County

Last spring: 04-24 · First fall: 10-28

Leelanau County

Last spring: 04-27 · First fall: 11-08

Lenawee County

Last spring: 04-16 · First fall: 10-31

Livingston County

Last spring: 04-24 · First fall: 10-20

Luce County

Last spring: 05-06 · First fall: 10-18

Mackinac County

Last spring: 05-11 · First fall: 10-12

Macomb County

Last spring: 04-18 · First fall: 11-03

Manistee County

Last spring: 04-30 · First fall: 11-01

Marquette County

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

Mason County

Last spring: 05-01 · First fall: 10-21

Mecosta County

Last spring: 04-30 · First fall: 10-13

Menominee County

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

Midland County

Last spring: 04-18 · First fall: 10-31

Missaukee County

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

Monroe County

Last spring: 04-14 · First fall: 11-04

Montcalm County

Last spring: 05-04 · First fall: 10-07

Montmorency County

Last spring: 05-08 · First fall: 10-11

Muskegon County

Last spring: 05-05 · First fall: 10-18

Newaygo County

Last spring: 04-27 · First fall: 10-25

Oakland County

Last spring: 04-18 · First fall: 11-01

Oceana County

Last spring: 04-30 · First fall: 10-25

Ogemaw County

Last spring: 05-01 · First fall: 10-17

Ontonagon County

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

Osceola County

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

Oscoda County

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

Otsego County

Last spring: 05-06 · First fall: 10-13

Ottawa County

Last spring: 04-18 · First fall: 11-05

Presque Isle County

Last spring: 05-01 · First fall: 10-14

Roscommon County

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

Saginaw County

Last spring: 04-17 · First fall: 11-03

Sanilac County

Last spring: 04-22 · First fall: 10-30

Schoolcraft County

Last spring: 04-27 · First fall: 10-26

Shiawassee County

Last spring: 04-20 · First fall: 10-28

St. Clair County

Last spring: 04-19 · First fall: 11-01

St. Joseph County

Last spring: 04-19 · First fall: 10-31

Tuscola County

Last spring: 04-27 · First fall: 10-23

Van Buren County

Last spring: 04-05 · First fall: 11-14

Washtenaw County

Last spring: 04-27 · First fall: 10-16

Wayne County

Last spring: 04-20 · First fall: 10-28

Wexford County

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