oregon frost dates, county by county.

Baker County

Last spring: 05-08 · First fall: 09-27

Benton County

Last spring: 04-25 · First fall: 10-28

Clackamas County

Last spring: 02-26 · First fall: 11-30

Clatsop County

Last spring: 02-27 · First fall: 12-04

Columbia County

Last spring: 04-12 · First fall: 10-21

Coos County

Last spring: 02-16 · First fall: 12-02

Crook County

Last spring: 05-12 · First fall: 09-30

Curry County

Last spring: 01-02 · First fall: 12-29

Deschutes County

Last spring: — · First fall: —

Douglas County

Last spring: 02-26 · First fall: 12-01

Gilliam County

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

Grant County

Last spring: 05-08 · First fall: 10-01

Harney County

Last spring: 05-03 · First fall: 10-01

Hood River County

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

Jackson County

Last spring: 03-10 · First fall: 11-13

Jefferson County

Last spring: 05-02 · First fall: 10-17

Josephine County

Last spring: 03-08 · First fall: 11-16

Klamath County

Last spring: 06-10 · First fall: 09-13

Lake County

Last spring: 05-10 · First fall: 09-28

Lane County

Last spring: 02-02 · First fall: 12-16

Lincoln County

Last spring: 01-20 · First fall: 12-30

Linn County

Last spring: 03-30 · First fall: 11-05

Malheur County

Last spring: 05-22 · First fall: 09-21

Marion County

Last spring: 03-30 · First fall: 11-13

Morrow County

Last spring: 04-02 · First fall: 11-01

Multnomah County

Last spring: 02-14 · First fall: 12-15

Polk County

Last spring: 03-13 · First fall: 11-23

Sherman County

Last spring: 04-26 · First fall: 10-16

Tillamook County

Last spring: 02-19 · First fall: 12-04

Umatilla County

Last spring: 03-31 · First fall: 10-24

Union County

Last spring: 04-19 · First fall: 10-14

Wallowa County

Last spring: 05-13 · First fall: 09-22

Wasco County

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

Washington County

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

Wheeler County

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

Yamhill County

Last spring: 02-20 · First fall: 11-28