Sanders County, Montana · Frost dates
Sanders County frost dates.
First-frost, last-frost, and growing-season length for Sanders County, Montana. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4b
32°F — light freeze
Last spring frost
- 10%
- —
- 20%
- —
- 50%
- —
- 80%
- —
- 90%
- —
First fall frost
- 10%
- —
- 20%
- —
- 50%
- —
- 80%
- —
- 90%
- —
28°F — killing freeze
Last spring freeze
- 10%
- —
- 20%
- —
- 50%
- —
- 80%
- —
- 90%
- —
First fall freeze
- 10%
- —
- 20%
- —
- 50%
- —
- 80%
- —
- 90%
- —
Growing season length (days, 28°F threshold)
- Short year
- 0
- Median
- 0
- Long year
- 0
Source NOAA station
LIBBY 32 SSE, MT US
14.0 mi · 25 yrs of record (1991–2020) · 3440 ft elev.
Data from LIBBY 32 SSE, MT US, 14 miles away with 25-year NOAA record (1991-2020).
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