Foster County, North Dakota · Frost dates
Foster County frost dates.
First-frost, last-frost, and growing-season length for Foster County, North Dakota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-25
- 20%
- 05-21
- 50%
- 05-12
- 80%
- 05-04
- 90%
- 04-30
First fall frost
- 10%
- 09-17
- 20%
- 09-20
- 50%
- 09-27
- 80%
- 10-04
- 90%
- 10-09
28°F — killing freeze
Last spring freeze
- 10%
- 05-17
- 20%
- 05-12
- 50%
- 05-04
- 80%
- 04-24
- 90%
- 04-19
First fall freeze
- 10%
- 09-24
- 20%
- 09-28
- 50%
- 10-05
- 80%
- 10-15
- 90%
- 10-19
Growing season length (days, 28°F threshold)
- Short year
- 130
- Median
- 154
- Long year
- 183
Source NOAA station
CARRINGTON 4 N, ND US
11.9 mi · 30 yrs of record (1991–2020) · 1560 ft elev.
Data from CARRINGTON 4 N, ND US, 11.9 miles away with 30-year NOAA record (1991-2020).
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