Polk County, Minnesota · Frost dates
Polk County frost dates.
First-frost, last-frost, and growing-season length for Polk County, Minnesota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-24
- 20%
- 05-19
- 50%
- 05-09
- 80%
- 05-01
- 90%
- 04-27
First fall frost
- 10%
- 09-16
- 20%
- 09-20
- 50%
- 09-30
- 80%
- 10-07
- 90%
- 10-11
28°F — killing freeze
Last spring freeze
- 10%
- 05-13
- 20%
- 05-08
- 50%
- 04-30
- 80%
- 04-21
- 90%
- 04-16
First fall freeze
- 10%
- 09-25
- 20%
- 09-30
- 50%
- 10-08
- 80%
- 10-18
- 90%
- 10-22
Growing season length (days, 28°F threshold)
- Short year
- 135
- Median
- 161
- Long year
- 189
Source NOAA station
RED LAKE FALLS, MN US
9.0 mi · 30 yrs of record (1991–2020) · 1038 ft elev.
Data from RED LAKE FALLS, MN US, 9 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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