Walsh County, North Dakota · Frost dates
Walsh County frost dates.
First-frost, last-frost, and growing-season length for Walsh County, North Dakota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-18
- 20%
- 05-13
- 50%
- 05-04
- 80%
- 04-24
- 90%
- 04-19
First fall frost
- 10%
- 09-25
- 20%
- 09-29
- 50%
- 10-07
- 80%
- 10-17
- 90%
- 10-21
28°F — killing freeze
Last spring freeze
- 10%
- 05-09
- 20%
- 05-04
- 50%
- 04-24
- 80%
- 04-14
- 90%
- 04-09
First fall freeze
- 10%
- 10-03
- 20%
- 10-07
- 50%
- 10-17
- 80%
- 10-26
- 90%
- 10-30
Growing season length (days, 28°F threshold)
- Short year
- 147
- Median
- 176
- Long year
- 204
Source NOAA station
GRAFTON, ND US
13.9 mi · 30 yrs of record (1991–2020) · 827 ft elev.
Data from GRAFTON, ND US, 13.9 miles away with 30-year NOAA record (1991-2020).
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