Roosevelt County, Montana · Frost dates
Roosevelt County frost dates.
First-frost, last-frost, and growing-season length for Roosevelt 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%
- 06-01
- 50%
- 05-24
- 80%
- 05-16
- 90%
- 05-12
First fall frost
- 10%
- 09-01
- 20%
- 09-05
- 50%
- 09-14
- 80%
- 09-22
- 90%
- 09-25
28°F — killing freeze
Last spring freeze
- 10%
- 05-26
- 20%
- 05-22
- 50%
- 05-14
- 80%
- 05-05
- 90%
- 05-01
First fall freeze
- 10%
- 09-08
- 20%
- 09-13
- 50%
- 09-22
- 80%
- 09-30
- 90%
- 10-04
Growing season length (days, 28°F threshold)
- Short year
- 105
- Median
- 131
- Long year
- 156
Source NOAA station
WOLF POINT 29 ENE, MT US
5.2 mi · 30 yrs of record (1991–2020) · 2085 ft elev.
Data from WOLF POINT 29 ENE, MT US, 5.2 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
14-day free trial. No credit card. Cancel anytime.