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 (1991–2020) · 682 ft elev.
Data from GREEN BAY, WI US, 5.9 miles away with 30-year NOAA record (1991-2020).
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