Sioux County, North Dakota · Frost dates
Sioux County frost dates.
First-frost, last-frost, and growing-season length for Sioux County, North Dakota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-27
- 20%
- 05-22
- 50%
- 05-12
- 80%
- 05-03
- 90%
- 04-30
First fall frost
- 10%
- 09-11
- 20%
- 09-16
- 50%
- 09-24
- 80%
- 10-03
- 90%
- 10-08
28°F — killing freeze
Last spring freeze
- 10%
- 05-16
- 20%
- 05-11
- 50%
- 05-01
- 80%
- 04-23
- 90%
- 04-17
First fall freeze
- 10%
- 09-19
- 20%
- 09-24
- 50%
- 10-04
- 80%
- 10-13
- 90%
- 10-18
Growing season length (days, 28°F threshold)
- Short year
- 126
- Median
- 156
- Long year
- 184
Source NOAA station
BREIEN, ND US
19.5 mi · 30 yrs of record (1991–2020) · 1720 ft elev.
Data from BREIEN, ND US, 19.5 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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