Plant By Frost

Alaska

Frost dates for St. Paul 4 Ne, AK

At this NOAA station the last spring frost (32°F) usually comes by June 5 and the first fall frost around September 28, giving a growing season of about 110 days.

June 5average last spring frost
September 28average first fall frost
JanAprJulOctDec

Frost odds

1 year in 10 the last spring frost is later thanJuly 1
Half of years the last spring frost is later thanJune 5
9 years in 10 the last spring frost is later thanMay 16
1 year in 10 the first fall frost is earlier thanSeptember 3
Half of years the first fall frost is earlier thanSeptember 28
9 years in 10 the first fall frost is earlier thanOctober 16

A hard freeze (28°F) usually ends by May 18 and returns around October 10.

Station USW00025711, elevation 6 m. Based on 14 years of 1991 to 2020 records. A garden higher up, in a hollow or far from this station can freeze later in spring.

Check another ZIP

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