Frost dates · Oregon
Oregon counties by frost timing.
Latest at top, earliest at bottom. In most states this matches the north-to-south gradient.
Sorted by spring frost
Latest → earliest.
Klamath County
Spring Jun 10·Fall Sep 1395-day season
Malheur County
Spring May 22·Fall Sep 21122-day season
Wallowa County
Spring May 13·Fall Sep 22132-day season
Crook County
Spring May 12·Fall Sep 30141-day season
Lake County
Spring May 10·Fall Sep 28141-day season
Baker County
Spring May 8·Fall Sep 27142-day season
Grant County
Spring May 8·Fall Oct 1146-day season
Harney County
Spring May 3·Fall Oct 1151-day season
Jefferson County
Spring May 2·Fall Oct 17168-day season
Wheeler County
Spring Apr 30·Fall Oct 22175-day season
Sherman County
Spring Apr 26·Fall Oct 16173-day season
Benton County
Spring Apr 25·Fall Oct 28186-day season
Gilliam County
Spring Apr 25·Fall Oct 24182-day season
Wasco County
Spring Apr 24·Fall Oct 24183-day season
Hood River County
Spring Apr 21·Fall Oct 20182-day season
Union County
Spring Apr 19·Fall Oct 14178-day season
Columbia County
Spring Apr 12·Fall Oct 21192-day season
Morrow County
Spring Apr 2·Fall Nov 1213-day season
Umatilla County
Spring Mar 31·Fall Oct 24207-day season
Linn County
Spring Mar 30·Fall Nov 5220-day season
Marion County
Spring Mar 30·Fall Nov 13228-day season
Washington County
Spring Mar 19·Fall Nov 11237-day season
Polk County
Spring Mar 13·Fall Nov 23255-day season
Jackson County
Spring Mar 10·Fall Nov 13248-day season
Josephine County
Spring Mar 8·Fall Nov 16253-day season
Clatsop County
Spring Feb 27·Fall Dec 4280-day season
Clackamas County
Spring Feb 26·Fall Nov 30277-day season
Douglas County
Spring Feb 26·Fall Dec 1278-day season
Yamhill County
Spring Feb 20·Fall Nov 28281-day season
Tillamook County
Spring Feb 19·Fall Dec 4288-day season
Coos County
Spring Feb 16·Fall Dec 2289-day season
Multnomah County
Spring Feb 14·Fall Dec 15304-day season
Lane County
Spring Feb 2·Fall Dec 16317-day season
Lincoln County
Spring Jan 20·Fall Dec 30344-day season
Curry County
Spring Jan 2·Fall Dec 29361-day season
Alphabetical · A to Z
- Baker County
- Benton County
- Clackamas County
- Clatsop County
- Columbia County
- Coos County
- Crook County
- Curry County
- Deschutes County
- Douglas County
- Gilliam County
- Grant County
- Harney County
- Hood River County
- Jackson County
- Jefferson County
- Josephine County
- Klamath County
- Lake County
- Lane County
- Lincoln County
- Linn County
- Malheur County
- Marion County
- Morrow County
- Multnomah County
- Polk County
- Sherman County
- Tillamook County
- Umatilla County
- Union County
- Wallowa County
- Wasco County
- Washington County
- Wheeler County
- Yamhill County