McHenry County, North Dakota · Frost dates
McHenry County frost dates.
First-frost, last-frost, and growing-season length for McHenry County, North Dakota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-22
- 20%
- 05-17
- 50%
- 05-09
- 80%
- 05-02
- 90%
- 04-28
First fall frost
- 10%
- 09-19
- 20%
- 09-23
- 50%
- 10-01
- 80%
- 10-10
- 90%
- 10-14
28°F — killing freeze
Last spring freeze
- 10%
- 05-11
- 20%
- 05-07
- 50%
- 04-30
- 80%
- 04-20
- 90%
- 04-16
First fall freeze
- 10%
- 09-26
- 20%
- 10-01
- 50%
- 10-09
- 80%
- 10-18
- 90%
- 10-23
Growing season length (days, 28°F threshold)
- Short year
- 138
- Median
- 162
- Long year
- 190
Source NOAA station
GRANVILLE, ND US
10.0 mi · 30 yrs of record (1991–2020) · 1510 ft elev.
Data from GRANVILLE, ND US, 10 miles away with 30-year NOAA record (1991-2020).
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