Roseau County, Minnesota · Frost dates
Roseau County frost dates.
First-frost, last-frost, and growing-season length for Roseau 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%
- 05-26
- 50%
- 05-16
- 80%
- 05-08
- 90%
- 05-05
First fall frost
- 10%
- 09-11
- 20%
- 09-16
- 50%
- 09-24
- 80%
- 10-01
- 90%
- 10-06
28°F — killing freeze
Last spring freeze
- 10%
- 05-22
- 20%
- 05-16
- 50%
- 05-07
- 80%
- 05-01
- 90%
- 04-28
First fall freeze
- 10%
- 09-19
- 20%
- 09-24
- 50%
- 10-03
- 80%
- 10-12
- 90%
- 10-17
Growing season length (days, 28°F threshold)
- Short year
- 120
- Median
- 149
- Long year
- 172
Source NOAA station
WARROAD, MN US
24.2 mi · 30 yrs of record (1991–2020) · 1073 ft elev.
Data from WARROAD, MN US, 24.2 miles away with 30-year NOAA record (1991-2020).
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