Brown County, Wisconsin · Frost dates

Brown County frost dates.

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

Data confidence: high · USDA zone: 5a

32°F — light freeze

Last spring frost

10%
05-16
20%
05-11
50%
04-30
80%
04-22
90%
04-16

First fall frost

10%
09-24
20%
09-29
50%
10-09
80%
10-21
90%
10-26

28°F — killing freeze

Last spring freeze

10%
05-04
20%
04-29
50%
04-17
80%
04-07
90%
04-03

First fall freeze

10%
10-06
20%
10-11
50%
10-24
80%
11-03
90%
11-09

Growing season length (days, 28°F threshold)

Short year
155
Median
190
Long year
220

Source NOAA station

GREEN BAY, WI US

5.9 mi · 30 yrs of record (19912020) · 682 ft elev.

Data from GREEN BAY, WI US, 5.9 miles away with 30-year NOAA record (1991-2020).

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