Ramsey County, Minnesota · Frost dates

Ramsey County frost dates.

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

Data confidence: high · USDA zone: 4a

32°F — light freeze

Last spring frost

10%
05-07
20%
05-01
50%
04-23
80%
04-14
90%
04-09

First fall frost

10%
10-03
20%
10-08
50%
10-20
80%
10-29
90%
11-02

28°F — killing freeze

Last spring freeze

10%
04-27
20%
04-23
50%
04-14
80%
04-06
90%
04-02

First fall freeze

10%
10-15
20%
10-21
50%
10-31
80%
11-07
90%
11-12

Growing season length (days, 28°F threshold)

Short year
171
Median
200
Long year
224

Source NOAA station

VADNAIS LAKE, MN US

2.3 mi · 30 yrs of record (19912020) · 890 ft elev.

Data from VADNAIS LAKE, MN US, 2.3 miles away with 30-year NOAA record (1991-2020).

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