Cass County, North Dakota · Frost dates
Cass County frost dates.
First-frost, last-frost, and growing-season length for Cass County, North Dakota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-21
- 20%
- 05-17
- 50%
- 05-09
- 80%
- 04-30
- 90%
- 04-25
First fall frost
- 10%
- 09-17
- 20%
- 09-22
- 50%
- 10-01
- 80%
- 10-09
- 90%
- 10-15
28°F — killing freeze
Last spring freeze
- 10%
- 05-13
- 20%
- 05-09
- 50%
- 04-29
- 80%
- 04-18
- 90%
- 04-12
First fall freeze
- 10%
- 09-26
- 20%
- 10-01
- 50%
- 10-10
- 80%
- 10-21
- 90%
- 10-24
Growing season length (days, 28°F threshold)
- Short year
- 136
- Median
- 164
- Long year
- 195
Source NOAA station
CASSELTON AGRONOMY FARM, ND US
3.6 mi · 30 yrs of record (1991–2020) · 935 ft elev.
Data from CASSELTON AGRONOMY FARM, ND US, 3.6 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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