Lincoln County, Montana · Frost dates

Lincoln County frost dates.

First-frost, last-frost, and growing-season length for Lincoln County, Montana. Sourced from NOAA 1991-2020 Climate Normals.

Data confidence: high · USDA zone: 4b

32°F — light freeze

Last spring frost

10%
06-07
20%
06-02
50%
05-23
80%
05-14
90%
05-09

First fall frost

10%
09-03
20%
09-08
50%
09-21
80%
10-03
90%
10-08

28°F — killing freeze

Last spring freeze

10%
05-20
20%
05-16
50%
05-07
80%
04-28
90%
04-23

First fall freeze

10%
09-20
20%
09-26
50%
10-05
80%
10-20
90%
10-29

Growing season length (days, 28°F threshold)

Short year
123
Median
151
Long year
189

Source NOAA station

LIBBY 1 NE RS, MT US

10.9 mi · 30 yrs of record (19912020) · 2096 ft elev.

Data from LIBBY 1 NE RS, MT US, 10.9 miles away with 30-year NOAA record (1991-2020).

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