Pierce County, North Dakota · Frost dates
Pierce County frost dates.
First-frost, last-frost, and growing-season length for Pierce County, North Dakota. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 4a
32°F — light freeze
Last spring frost
- 10%
- 05-31
- 20%
- 05-26
- 50%
- 05-17
- 80%
- 05-08
- 90%
- 05-03
First fall frost
- 10%
- 09-11
- 20%
- 09-15
- 50%
- 09-23
- 80%
- 10-01
- 90%
- 10-05
28°F — killing freeze
Last spring freeze
- 10%
- 05-22
- 20%
- 05-16
- 50%
- 05-06
- 80%
- 04-27
- 90%
- 04-21
First fall freeze
- 10%
- 09-20
- 20%
- 09-24
- 50%
- 10-01
- 80%
- 10-09
- 90%
- 10-14
Growing season length (days, 28°F threshold)
- Short year
- 121
- Median
- 148
- Long year
- 176
Source NOAA station
RUGBY, ND US
8.1 mi · 30 yrs of record (1991–2020) · 1550 ft elev.
Data from RUGBY, ND US, 8.1 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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