Plant By Frost

Oklahoma

Frost dates for Spavinaw, OK

At this NOAA station the last spring frost (32°F) usually comes by April 7 and the first fall frost around November 2, giving a growing season of about 209 days.

April 7average last spring frost
November 2average first fall frost
JanAprJulOctDec

Frost odds

1 year in 10 the last spring frost is later thanApril 24
Half of years the last spring frost is later thanApril 7
9 years in 10 the last spring frost is later thanMarch 22
1 year in 10 the first fall frost is earlier thanOctober 19
Half of years the first fall frost is earlier thanNovember 2
9 years in 10 the first fall frost is earlier thanNovember 17

A hard freeze (28°F) usually ends by March 29 and returns around November 10.

A light frost (36°F, which can still nip tender plants) usually ends by April 18 and returns around October 25.

Station USC00348380, elevation 209 m. Based on 25 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