Montmorency County, Michigan · Frost dates
Montmorency County frost dates.
First-frost, last-frost, and growing-season length for Montmorency County, Michigan. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5b
32°F — light freeze
Last spring frost
- 10%
- 06-05
- 20%
- 05-31
- 50%
- 05-22
- 80%
- 05-11
- 90%
- 05-05
First fall frost
- 10%
- 09-12
- 20%
- 09-18
- 50%
- 09-27
- 80%
- 10-06
- 90%
- 10-11
28°F — killing freeze
Last spring freeze
- 10%
- 05-24
- 20%
- 05-20
- 50%
- 05-08
- 80%
- 04-29
- 90%
- 04-24
First fall freeze
- 10%
- 09-26
- 20%
- 09-30
- 50%
- 10-11
- 80%
- 10-23
- 90%
- 10-29
Growing season length (days, 28°F threshold)
- Short year
- 125
- Median
- 156
- Long year
- 188
Source NOAA station
ATLANTA, MI US
1.4 mi · 30 yrs of record (1991–2020) · 879 ft elev.
Data from ATLANTA, MI US, 1.4 miles away with 30-year NOAA record (1991-2020).
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