Brown County, Minnesota · Frost dates
Brown County frost dates.
First-frost, last-frost, and growing-season length for Brown County, Minnesota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-15
- 20%
- 05-12
- 50%
- 05-04
- 80%
- 04-26
- 90%
- 04-20
First fall frost
- 10%
- 09-17
- 20%
- 09-21
- 50%
- 10-01
- 80%
- 10-12
- 90%
- 10-17
28°F — killing freeze
Last spring freeze
- 10%
- 05-06
- 20%
- 05-03
- 50%
- 04-24
- 80%
- 04-14
- 90%
- 04-09
First fall freeze
- 10%
- 09-25
- 20%
- 10-01
- 50%
- 10-12
- 80%
- 10-22
- 90%
- 10-27
Growing season length (days, 28°F threshold)
- Short year
- 142
- Median
- 171
- Long year
- 201
Source NOAA station
SPRINGFIELD 1 NW, MN US
12.5 mi · 30 yrs of record (1991–2020) · 1066 ft elev.
Data from SPRINGFIELD 1 NW, MN US, 12.5 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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