Marathon County, Wisconsin · Frost dates
Marathon County frost dates.
First-frost, last-frost, and growing-season length for Marathon County, Wisconsin. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 05-21
- 20%
- 05-17
- 50%
- 05-06
- 80%
- 04-28
- 90%
- 04-24
First fall frost
- 10%
- 09-21
- 20%
- 09-26
- 50%
- 10-04
- 80%
- 10-12
- 90%
- 10-18
28°F — killing freeze
Last spring freeze
- 10%
- 05-10
- 20%
- 05-05
- 50%
- 04-26
- 80%
- 04-16
- 90%
- 04-12
First fall freeze
- 10%
- 10-01
- 20%
- 10-05
- 50%
- 10-16
- 80%
- 10-26
- 90%
- 10-31
Growing season length (days, 28°F threshold)
- Short year
- 144
- Median
- 173
- Long year
- 202
Source NOAA station
WAUSAU DWTN AP, WI US
6.7 mi · 30 yrs of record (1991–2020) · 1181 ft elev.
Data from WAUSAU DWTN AP, WI US, 6.7 miles away with 30-year NOAA record (1991-2020).
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