Allegan County, Michigan · Frost dates
Allegan County frost dates.
First-frost, last-frost, and growing-season length for Allegan County, Michigan. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5b
32°F — light freeze
Last spring frost
- 10%
- 05-04
- 20%
- 04-29
- 50%
- 04-17
- 80%
- 04-07
- 90%
- 04-03
First fall frost
- 10%
- 10-24
- 20%
- 10-28
- 50%
- 11-05
- 80%
- 11-14
- 90%
- 11-19
28°F — killing freeze
Last spring freeze
- 10%
- 04-20
- 20%
- 04-15
- 50%
- 04-05
- 80%
- 03-27
- 90%
- 03-22
First fall freeze
- 10%
- 11-03
- 20%
- 11-06
- 50%
- 11-14
- 80%
- 11-26
- 90%
- 12-02
Growing season length (days, 28°F threshold)
- Short year
- 197
- Median
- 223
- Long year
- 255
Source NOAA station
S HAVEN, MI US
1.7 mi · 30 yrs of record (1991–2020) · 590 ft elev.
Data from S HAVEN, MI US, 1.7 miles away with 30-year NOAA record (1991-2020).
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