Clay County, Minnesota · Frost dates
Clay County frost dates.
First-frost, last-frost, and growing-season length for Clay County, Minnesota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-20
- 20%
- 05-14
- 50%
- 05-05
- 80%
- 04-28
- 90%
- 04-23
First fall frost
- 10%
- 09-22
- 20%
- 09-25
- 50%
- 10-03
- 80%
- 10-13
- 90%
- 10-18
28°F — killing freeze
Last spring freeze
- 10%
- 05-09
- 20%
- 05-05
- 50%
- 04-28
- 80%
- 04-18
- 90%
- 04-12
First fall freeze
- 10%
- 10-01
- 20%
- 10-04
- 50%
- 10-14
- 80%
- 10-24
- 90%
- 10-29
Growing season length (days, 28°F threshold)
- Short year
- 145
- Median
- 169
- Long year
- 200
Source NOAA station
MOORHEAD, MN US
12.0 mi · 30 yrs of record (1991–2020) · 904 ft elev.
Data from MOORHEAD, MN US, 12 miles away with 30-year NOAA record (1991-2020).
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