Fallon County, Montana · Frost dates
Fallon County frost dates.
First-frost, last-frost, and growing-season length for Fallon County, Montana. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4b
32°F — light freeze
Last spring frost
- 10%
- 05-27
- 20%
- 05-22
- 50%
- 05-12
- 80%
- 05-02
- 90%
- 04-29
First fall frost
- 10%
- 09-11
- 20%
- 09-16
- 50%
- 09-26
- 80%
- 10-05
- 90%
- 10-09
28°F — killing freeze
Last spring freeze
- 10%
- 05-18
- 20%
- 05-12
- 50%
- 05-02
- 80%
- 04-22
- 90%
- 04-16
First fall freeze
- 10%
- 09-19
- 20%
- 09-23
- 50%
- 10-04
- 80%
- 10-14
- 90%
- 10-18
Growing season length (days, 28°F threshold)
- Short year
- 124
- Median
- 155
- Long year
- 185
Source NOAA station
BAKER, MT US
6.8 mi · 30 yrs of record (1991–2020) · 2933 ft elev.
Data from BAKER, MT US, 6.8 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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