Morrison County, Minnesota · Frost dates
Morrison County frost dates.
First-frost, last-frost, and growing-season length for Morrison County, Minnesota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-22
- 20%
- 05-14
- 50%
- 05-04
- 80%
- 04-26
- 90%
- 04-21
First fall frost
- 10%
- 09-22
- 20%
- 09-27
- 50%
- 10-05
- 80%
- 10-14
- 90%
- 10-19
28°F — killing freeze
Last spring freeze
- 10%
- 05-07
- 20%
- 05-02
- 50%
- 04-24
- 80%
- 04-15
- 90%
- 04-11
First fall freeze
- 10%
- 10-01
- 20%
- 10-06
- 50%
- 10-16
- 80%
- 10-26
- 90%
- 10-31
Growing season length (days, 28°F threshold)
- Short year
- 147
- Median
- 175
- Long year
- 203
Source NOAA station
LITTLE FALLS 2NNE, MN US
3.9 mi · 30 yrs of record (1991–2020) · 1120 ft elev.
Data from LITTLE FALLS 2NNE, MN US, 3.9 miles away with 30-year NOAA record (1991-2020).
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