Plant By Frost

Utah

Frost dates for Kanosh, UT

At this NOAA station the last spring frost (32°F) usually comes by April 30 and the first fall frost around October 19, giving a growing season of about 172 days.

April 30average last spring frost
October 19average first fall frost
JanAprJulOctDec

Frost odds

1 year in 10 the last spring frost is later thanMay 21
Half of years the last spring frost is later thanApril 30
9 years in 10 the last spring frost is later thanApril 13
1 year in 10 the first fall frost is earlier thanOctober 3
Half of years the first fall frost is earlier thanOctober 19
9 years in 10 the first fall frost is earlier thanNovember 5

A hard freeze (28°F) usually ends by April 17 and returns around October 30.

A light frost (36°F, which can still nip tender plants) usually ends by May 14 and returns around October 8.

Station USC00424527, elevation 1336 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