Itasca County, Minnesota · Frost dates
Itasca County frost dates.
First-frost, last-frost, and growing-season length for Itasca County, Minnesota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-30
- 20%
- 05-25
- 50%
- 05-14
- 80%
- 05-04
- 90%
- 04-30
First fall frost
- 10%
- 09-20
- 20%
- 09-25
- 50%
- 10-02
- 80%
- 10-12
- 90%
- 10-16
28°F — killing freeze
Last spring freeze
- 10%
- 05-20
- 20%
- 05-13
- 50%
- 05-03
- 80%
- 04-24
- 90%
- 04-20
First fall freeze
- 10%
- 10-01
- 20%
- 10-05
- 50%
- 10-14
- 80%
- 10-24
- 90%
- 10-28
Growing season length (days, 28°F threshold)
- Short year
- 134
- Median
- 164
- Long year
- 191
Source NOAA station
MARCELL 5NE, MN US
9.9 mi · 30 yrs of record (1991–2020) · 1387 ft elev.
Data from MARCELL 5NE, MN US, 9.9 miles away with 30-year NOAA record (1991-2020).
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