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 (1991–2020) · 4222 ft elev.
Data from HARLOWTON, MT US, 4.3 miles away with 30-year NOAA record (1991-2020).
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