Benson County, North Dakota · Frost dates
Benson County frost dates.
First-frost, last-frost, and growing-season length for Benson 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%
- 05-20
- 50%
- 05-12
- 80%
- 05-04
- 90%
- 05-01
First fall frost
- 10%
- 09-17
- 20%
- 09-21
- 50%
- 09-29
- 80%
- 10-07
- 90%
- 10-12
28°F — killing freeze
Last spring freeze
- 10%
- 05-16
- 20%
- 05-12
- 50%
- 05-04
- 80%
- 04-24
- 90%
- 04-19
First fall freeze
- 10%
- 09-25
- 20%
- 09-30
- 50%
- 10-08
- 80%
- 10-18
- 90%
- 10-21
Growing season length (days, 28°F threshold)
- Short year
- 132
- Median
- 157
- Long year
- 185
Source NOAA station
MINNEWAUKAN, ND US
4.0 mi · 30 yrs of record (1991–2020) · 1470 ft elev.
Data from MINNEWAUKAN, ND US, 4 miles away with 30-year NOAA record (1991-2020).
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