Genesee County, Michigan · Frost dates

Genesee County frost dates.

First-frost, last-frost, and growing-season length for Genesee County, Michigan. Sourced from NOAA 1991-2020 Climate Normals.

Data confidence: high · USDA zone: 5b

32°F — light freeze

Last spring frost

10%
05-20
20%
05-14
50%
05-03
80%
04-24
90%
04-20

First fall frost

10%
09-30
20%
10-04
50%
10-13
80%
10-23
90%
10-27

28°F — killing freeze

Last spring freeze

10%
05-09
20%
05-02
50%
04-22
80%
04-13
90%
04-08

First fall freeze

10%
10-12
20%
10-18
50%
10-27
80%
11-04
90%
11-09

Growing season length (days, 28°F threshold)

Short year
156
Median
188
Long year
215

Source NOAA station

FLINT 7W, MI US

3.4 mi · 30 yrs of record (19912020) · 679 ft elev.

Data from FLINT 7W, MI US, 3.4 miles away with 30-year NOAA record (1991-2020).

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