Macomb County, Michigan · Frost dates
Macomb County frost dates.
First-frost, last-frost, and growing-season length for Macomb County, Michigan. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5b
32°F — light freeze
Last spring frost
- 10%
- 05-15
- 20%
- 05-09
- 50%
- 04-30
- 80%
- 04-21
- 90%
- 04-16
First fall frost
- 10%
- 10-07
- 20%
- 10-13
- 50%
- 10-24
- 80%
- 11-01
- 90%
- 11-03
28°F — killing freeze
Last spring freeze
- 10%
- 05-03
- 20%
- 04-29
- 50%
- 04-18
- 80%
- 04-08
- 90%
- 04-03
First fall freeze
- 10%
- 10-20
- 20%
- 10-26
- 50%
- 11-03
- 80%
- 11-10
- 90%
- 11-15
Growing season length (days, 28°F threshold)
- Short year
- 170
- Median
- 199
- Long year
- 226
Source NOAA station
MT CLEMENS ANG BASE, MI US
6.4 mi · 30 yrs of record (1991–2020) · 580 ft elev.
Data from MT CLEMENS ANG BASE, MI US, 6.4 miles away with 30-year NOAA record (1991-2020).
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