Cottonwood County, Minnesota · Frost dates

Cottonwood County frost dates.

First-frost, last-frost, and growing-season length for Cottonwood County, Minnesota. Sourced from NOAA 1991-2020 Climate Normals.

Data confidence: high · USDA zone: 4a

32°F — light freeze

Last spring frost

10%
05-13
20%
05-08
50%
04-30
80%
04-21
90%
04-15

First fall frost

10%
09-25
20%
09-29
50%
10-10
80%
10-20
90%
10-24

28°F — killing freeze

Last spring freeze

10%
05-03
20%
04-30
50%
04-19
80%
04-08
90%
04-04

First fall freeze

10%
10-02
20%
10-10
50%
10-21
80%
10-29
90%
11-02

Growing season length (days, 28°F threshold)

Short year
152
Median
185
Long year
212

Source NOAA station

WINDOM, MN US

9.8 mi · 30 yrs of record (19912020) · 1384 ft elev.

Data from WINDOM, MN US, 9.8 miles away with 30-year NOAA record (1991-2020).

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