Hettinger County, North Dakota · Frost dates
Hettinger County frost dates.
First-frost, last-frost, and growing-season length for Hettinger County, North Dakota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-30
- 20%
- 05-25
- 50%
- 05-16
- 80%
- 05-09
- 90%
- 05-06
First fall frost
- 10%
- 09-11
- 20%
- 09-17
- 50%
- 09-25
- 80%
- 10-03
- 90%
- 10-07
28°F — killing freeze
Last spring freeze
- 10%
- 05-21
- 20%
- 05-15
- 50%
- 05-07
- 80%
- 04-30
- 90%
- 04-25
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
- 121
- Median
- 149
- Long year
- 175
Source NOAA station
MOTT, ND US
7.6 mi · 30 yrs of record (1991–2020) · 2426 ft elev.
Data from MOTT, ND US, 7.6 miles away with 30-year NOAA record (1991-2020).
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