Cass County, Michigan · Frost dates
Cass County frost dates.
First-frost, last-frost, and growing-season length for Cass County, Michigan. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5b
32°F — light freeze
Last spring frost
- 10%
- 05-22
- 20%
- 05-16
- 50%
- 05-04
- 80%
- 04-25
- 90%
- 04-21
First fall frost
- 10%
- 09-27
- 20%
- 10-01
- 50%
- 10-11
- 80%
- 10-22
- 90%
- 10-27
28°F — killing freeze
Last spring freeze
- 10%
- 05-10
- 20%
- 05-04
- 50%
- 04-24
- 80%
- 04-14
- 90%
- 04-10
First fall freeze
- 10%
- 10-08
- 20%
- 10-15
- 50%
- 10-26
- 80%
- 11-03
- 90%
- 11-07
Growing season length (days, 28°F threshold)
- Short year
- 151
- Median
- 185
- Long year
- 211
Source NOAA station
DOWAGIAC 1 W, MI US
8.3 mi · 30 yrs of record (1991–2020) · 740 ft elev.
Data from DOWAGIAC 1 W, MI US, 8.3 miles away with 30-year NOAA record (1991-2020).
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