Oregon frost dates by county and ZIP code
Across 428 Oregon ZIP codes the average last spring frost runs Jan 31 to Jun 11 and the average first fall frost Sep 5 to Dec 27 (50% odds, 32°F, NOAA 1991–2020 normals), with USDA hardiness zones. Download the table as CSV.
Counties
- Baker
- Benton
- Clackamas
- Clatsop
- Columbia
- Coos
- Crook
- Curry
- Deschutes
- Douglas
- Gilliam
- Grant
- Harney
- Hood River
- Jackson
- Jefferson
- Josephine
- Klamath
- Lake
- Lane
- Lincoln
- Linn
- Malheur
- Marion
- Morrow
- Multnomah
- Polk
- Sherman
- Tillamook
- Umatilla
- Union
- Wallowa
- Wasco
- Washington
- Wheeler
- Yamhill
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