St. Joseph County, Michigan · Frost dates
St. Joseph County frost dates.
First-frost, last-frost, and growing-season length for St. Joseph 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%
- 04-20
- 90%
- 04-16
First fall frost
- 10%
- 10-01
- 20%
- 10-07
- 50%
- 10-17
- 80%
- 10-27
- 90%
- 11-01
28°F — killing freeze
Last spring freeze
- 10%
- 05-05
- 20%
- 04-30
- 50%
- 04-19
- 80%
- 04-10
- 90%
- 04-05
First fall freeze
- 10%
- 10-15
- 20%
- 10-21
- 50%
- 10-31
- 80%
- 11-08
- 90%
- 11-13
Growing season length (days, 28°F threshold)
- Short year
- 163
- Median
- 195
- Long year
- 222
Source NOAA station
THREE RIVERS, MI US
6.1 mi · 30 yrs of record (1991–2020) · 810 ft elev.
Data from THREE RIVERS, MI US, 6.1 miles away with 30-year NOAA record (1991-2020).
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