Treasure County, Montana · Frost dates
Treasure County frost dates.
First-frost, last-frost, and growing-season length for Treasure County, Montana. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4b
32°F — light freeze
Last spring frost
- 10%
- 05-22
- 20%
- 05-18
- 50%
- 05-10
- 80%
- 05-01
- 90%
- 04-28
First fall frost
- 10%
- 09-15
- 20%
- 09-21
- 50%
- 09-29
- 80%
- 10-06
- 90%
- 10-11
28°F — killing freeze
Last spring freeze
- 10%
- 05-13
- 20%
- 05-08
- 50%
- 04-30
- 80%
- 04-19
- 90%
- 04-14
First fall freeze
- 10%
- 09-24
- 20%
- 09-29
- 50%
- 10-07
- 80%
- 10-17
- 90%
- 10-21
Growing season length (days, 28°F threshold)
- Short year
- 134
- Median
- 160
- Long year
- 190
Source NOAA station
HYSHAM, MT US
4.8 mi · 30 yrs of record (1991–2020) · 2669 ft elev.
Data from HYSHAM, MT US, 4.8 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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