Madison County, Montana · Frost dates
Madison County frost dates.
First-frost, last-frost, and growing-season length for Madison County, Montana. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4b
32°F — light freeze
Last spring frost
- 10%
- 06-23
- 20%
- 06-16
- 50%
- 06-04
- 80%
- 05-24
- 90%
- 05-17
First fall frost
- 10%
- 09-03
- 20%
- 09-07
- 50%
- 09-18
- 80%
- 09-27
- 90%
- 10-02
28°F — killing freeze
Last spring freeze
- 10%
- 06-03
- 20%
- 05-26
- 50%
- 05-14
- 80%
- 05-05
- 90%
- 05-01
First fall freeze
- 10%
- 09-13
- 20%
- 09-19
- 50%
- 10-01
- 80%
- 10-09
- 90%
- 10-14
Growing season length (days, 28°F threshold)
- Short year
- 102
- Median
- 140
- Long year
- 166
Source NOAA station
VIRGINIA CITY, MT US
2.8 mi · 30 yrs of record (1991–2020) · 5773 ft elev.
Data from VIRGINIA CITY, MT US, 2.8 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
14-day free trial. No credit card. Cancel anytime.