Plant By Frost

California

Frost dates for Blythe, CA

At this NOAA station the last spring frost (32°F) usually comes by January 25 and the first fall frost around December 12, giving a growing season of about 325 days.

January 25average last spring frost
December 12average first fall frost
JanAprJulOctDec

Frost odds

1 year in 10 the last spring frost is later thanFebruary 24
Half of years the last spring frost is later thanJanuary 25
9 years in 10 the last spring frost is later thanDecember 29
1 year in 10 the first fall frost is earlier thanNovember 28
Half of years the first fall frost is earlier thanDecember 12
9 years in 10 the first fall frost is earlier thanJanuary 3

A hard freeze (28°F) usually ends by December 30 and returns around December 22.

A light frost (36°F, which can still nip tender plants) usually ends by February 21 and returns around December 1.

Station USC00040924, elevation 82 m. Based on 17 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