Plant By Frost

South Dakota

Frost dates for Redig 11 Ne, SD

At this NOAA station the last spring frost (32°F) usually comes by May 15 and the first fall frost around September 24, giving a growing season of about 131 days.

May 15average last spring frost
September 24average first fall frost
JanAprJulOctDec

Frost odds

1 year in 10 the last spring frost is later thanMay 27
Half of years the last spring frost is later thanMay 15
9 years in 10 the last spring frost is later thanMay 3
1 year in 10 the first fall frost is earlier thanSeptember 9
Half of years the first fall frost is earlier thanSeptember 24
9 years in 10 the first fall frost is earlier thanOctober 6

A hard freeze (28°F) usually ends by May 5 and returns around October 2.

A light frost (36°F, which can still nip tender plants) usually ends by May 26 and returns around September 15.

Station USC00397062, elevation 936 m. Based on 21 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