Mason County, Michigan · Frost dates
Mason County frost dates.
First-frost, last-frost, and growing-season length for Mason County, Michigan. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5b
32°F — light freeze
Last spring frost
- 10%
- 06-01
- 20%
- 05-27
- 50%
- 05-17
- 80%
- 05-02
- 90%
- 04-28
First fall frost
- 10%
- 09-20
- 20%
- 09-26
- 50%
- 10-07
- 80%
- 10-19
- 90%
- 10-25
28°F — killing freeze
Last spring freeze
- 10%
- 05-21
- 20%
- 05-15
- 50%
- 05-01
- 80%
- 04-22
- 90%
- 04-16
First fall freeze
- 10%
- 10-02
- 20%
- 10-07
- 50%
- 10-21
- 80%
- 11-01
- 90%
- 11-06
Growing season length (days, 28°F threshold)
- Short year
- 134
- Median
- 173
- Long year
- 204
Source NOAA station
LUDINGTON 4 SE, MI US
4.2 mi · 30 yrs of record (1991–2020) · 690 ft elev.
Data from LUDINGTON 4 SE, MI US, 4.2 miles away with 30-year NOAA record (1991-2020).
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