Wheatland County, Montana · Frost dates

Wheatland County frost dates.

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

Data confidence: high · USDA zone: 4b

32°F — light freeze

Last spring frost

10%
06-06
20%
05-31
50%
05-23
80%
05-15
90%
05-12

First fall frost

10%
09-01
20%
09-06
50%
09-16
80%
09-24
90%
09-28

28°F — killing freeze

Last spring freeze

10%
05-23
20%
05-19
50%
05-12
80%
05-04
90%
05-01

First fall freeze

10%
09-12
20%
09-18
50%
09-27
80%
10-04
90%
10-08

Growing season length (days, 28°F threshold)

Short year
112
Median
138
Long year
160

Source NOAA station

HARLOWTON, MT US

4.3 mi · 30 yrs of record (19912020) · 4222 ft elev.

Data from HARLOWTON, MT US, 4.3 miles away with 30-year NOAA record (1991-2020).

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