Hennepin County, Minnesota · Frost dates

Hennepin County frost dates.

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

Data confidence: high · USDA zone: 4a

32°F — light freeze

Last spring frost

10%
05-12
20%
05-07
50%
04-29
80%
04-19
90%
04-15

First fall frost

10%
09-29
20%
10-02
50%
10-12
80%
10-21
90%
10-25

28°F — killing freeze

Last spring freeze

10%
05-01
20%
04-27
50%
04-19
80%
04-10
90%
04-05

First fall freeze

10%
10-08
20%
10-14
50%
10-22
80%
10-31
90%
11-04

Growing season length (days, 28°F threshold)

Short year
160
Median
186
Long year
213

Source NOAA station

NEW HOPE, MN US

4.7 mi · 30 yrs of record (19912020) · 910 ft elev.

Data from NEW HOPE, MN US, 4.7 miles away with 30-year NOAA record (1991-2020).

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