Gallatin County, Montana · Frost dates
Gallatin County frost dates.
First-frost, last-frost, and growing-season length for Gallatin County, Montana. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4b
32°F — light freeze
Last spring frost
- 10%
- 06-12
- 20%
- 06-05
- 50%
- 05-23
- 80%
- 05-10
- 90%
- 05-05
First fall frost
- 10%
- 09-04
- 20%
- 09-12
- 50%
- 09-23
- 80%
- 10-02
- 90%
- 10-06
28°F — killing freeze
Last spring freeze
- 10%
- 05-18
- 20%
- 05-12
- 50%
- 05-02
- 80%
- 04-25
- 90%
- 04-20
First fall freeze
- 10%
- 09-17
- 20%
- 09-24
- 50%
- 10-03
- 80%
- 10-14
- 90%
- 10-19
Growing season length (days, 28°F threshold)
- Short year
- 122
- Median
- 154
- Long year
- 182
Source NOAA station
BOZEMAN 6 W EXP FARM, MT US
10.7 mi · 30 yrs of record (1991–2020) · 4775 ft elev.
Data from BOZEMAN 6 W EXP FARM, MT US, 10.7 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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