Carlton County, Minnesota · Frost dates

Carlton County frost dates.

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

Data confidence: high · USDA zone: 4a

32°F — light freeze

Last spring frost

10%
06-09
20%
06-04
50%
05-26
80%
05-18
90%
05-13

First fall frost

10%
09-09
20%
09-14
50%
09-23
80%
10-01
90%
10-04

28°F — killing freeze

Last spring freeze

10%
05-28
20%
05-23
50%
05-12
80%
05-03
90%
04-28

First fall freeze

10%
09-18
20%
09-24
50%
10-03
80%
10-13
90%
10-18

Growing season length (days, 28°F threshold)

Short year
113
Median
144
Long year
173

Source NOAA station

CLOQUET, MN US

9.9 mi · 30 yrs of record (19912020) · 1265 ft elev.

Data from CLOQUET, MN US, 9.9 miles away with 30-year NOAA record (1991-2020).

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