Door County, Wisconsin · Frost dates
Door County frost dates.
First-frost, last-frost, and growing-season length for Door County, Wisconsin. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 05-28
- 20%
- 05-23
- 50%
- 05-14
- 80%
- 05-03
- 90%
- 04-28
First fall frost
- 10%
- 10-01
- 20%
- 10-06
- 50%
- 10-18
- 80%
- 10-30
- 90%
- 11-03
28°F — killing freeze
Last spring freeze
- 10%
- 05-17
- 20%
- 05-12
- 50%
- 05-01
- 80%
- 04-23
- 90%
- 04-18
First fall freeze
- 10%
- 10-15
- 20%
- 10-21
- 50%
- 11-01
- 80%
- 11-09
- 90%
- 11-14
Growing season length (days, 28°F threshold)
- Short year
- 151
- Median
- 184
- Long year
- 210
Source NOAA station
EPHRAIM 1NE-WWTP, WI US
7.4 mi · 30 yrs of record (1991–2020) · 733 ft elev.
Data from EPHRAIM 1NE-WWTP, WI US, 7.4 miles away with 30-year NOAA record (1991-2020).
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