Ransom County, North Dakota · Frost dates

Ransom County frost dates.

First-frost, last-frost, and growing-season length for Ransom County, North Dakota. Sourced from NOAA 1991-2020 Climate Normals.

Data confidence: high · USDA zone: 4a

32°F — light freeze

Last spring frost

10%
05-23
20%
05-20
50%
05-12
80%
05-04
90%
04-30

First fall frost

10%
09-14
20%
09-19
50%
09-27
80%
10-04
90%
10-08

28°F — killing freeze

Last spring freeze

10%
05-15
20%
05-10
50%
05-03
80%
04-25
90%
04-20

First fall freeze

10%
09-23
20%
09-27
50%
10-04
80%
10-14
90%
10-18

Growing season length (days, 28°F threshold)

Short year
131
Median
154
Long year
181

Source NOAA station

LISBON, ND US

2.2 mi · 30 yrs of record (19912020) · 1149 ft elev.

Data from LISBON, ND US, 2.2 miles away with 30-year NOAA record (1991-2020).

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