Sheridan County, Montana · Frost dates
Sheridan County frost dates.
First-frost, last-frost, and growing-season length for Sheridan County, Montana. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4b
32°F — light freeze
Last spring frost
- 10%
- 06-08
- 20%
- 06-02
- 50%
- 05-25
- 80%
- 05-17
- 90%
- 05-13
First fall frost
- 10%
- 09-02
- 20%
- 09-05
- 50%
- 09-14
- 80%
- 09-21
- 90%
- 09-25
28°F — killing freeze
Last spring freeze
- 10%
- 05-28
- 20%
- 05-24
- 50%
- 05-15
- 80%
- 05-07
- 90%
- 05-03
First fall freeze
- 10%
- 09-09
- 20%
- 09-14
- 50%
- 09-22
- 80%
- 09-29
- 90%
- 10-03
Growing season length (days, 28°F threshold)
- Short year
- 104
- Median
- 130
- Long year
- 153
Source NOAA station
PLENTYWOOD, MT US
5.0 mi · 30 yrs of record (1991–2020) · 2048 ft elev.
Data from PLENTYWOOD, MT US, 5 miles away with 30-year NOAA record (1991-2020).
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