Plant By Frost

Oregon

Frost dates for Winchester Bay Coast Grd, OR

At this NOAA station the last spring frost (32°F) usually comes by March 25 and the first fall frost around November 24, giving a growing season of about 249 days.

March 25average last spring frost
November 24average first fall frost
JanAprJulOctDec

Frost odds

1 year in 10 the last spring frost is later thanApril 27
Half of years the last spring frost is later thanMarch 25
9 years in 10 the last spring frost is later thanFebruary 15
1 year in 10 the first fall frost is earlier thanOctober 27
Half of years the first fall frost is earlier thanNovember 24
9 years in 10 the first fall frost is earlier thanJanuary 1

A hard freeze (28°F) usually ends by February 17 and returns around December 26.

A light frost (36°F, which can still nip tender plants) usually ends by April 27 and returns around October 30.

Station USC00353193, elevation 2 m. Based on 16 years of 1991 to 2020 records. A garden higher up, in a hollow or far from this station can freeze later in spring.

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Sources

  1. U.S. Annual/Seasonal Climate Normals, 1991 to 2020 (freeze probability dates by station), NOAA National Centers for Environmental Information, checked 1 November 2026
  2. Annual/Seasonal Normals 1991 to 2020 documentation, NOAA National Centers for Environmental Information, checked 1 November 2026
  3. 2024 Gazetteer Files, ZIP Code Tabulation Areas, US Census Bureau, checked 1 November 2026