Slope County, North Dakota · Frost dates
Slope County frost dates.
First-frost, last-frost, and growing-season length for Slope County, North Dakota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-28
- 20%
- 05-22
- 50%
- 05-12
- 80%
- 05-05
- 90%
- 05-02
First fall frost
- 10%
- 09-14
- 20%
- 09-20
- 50%
- 09-29
- 80%
- 10-06
- 90%
- 10-10
28°F — killing freeze
Last spring freeze
- 10%
- 05-17
- 20%
- 05-11
- 50%
- 05-03
- 80%
- 04-24
- 90%
- 04-17
First fall freeze
- 10%
- 09-23
- 20%
- 09-28
- 50%
- 10-06
- 80%
- 10-16
- 90%
- 10-20
Growing season length (days, 28°F threshold)
- Short year
- 129
- Median
- 156
- Long year
- 186
Source NOAA station
AMIDON, ND US
7.1 mi · 30 yrs of record (1991–2020) · 2910 ft elev.
Data from AMIDON, ND US, 7.1 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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