Coos County, New Hampshire · Frost dates
Coos County frost dates.
First-frost, last-frost, and growing-season length for Coos County, New Hampshire. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5b
32°F — light freeze
Last spring frost
- 10%
- 06-11
- 20%
- 06-07
- 50%
- 05-30
- 80%
- 05-20
- 90%
- 05-15
First fall frost
- 10%
- 09-05
- 20%
- 09-10
- 50%
- 09-19
- 80%
- 09-28
- 90%
- 10-03
28°F — killing freeze
Last spring freeze
- 10%
- 06-01
- 20%
- 05-26
- 50%
- 05-17
- 80%
- 05-07
- 90%
- 05-01
First fall freeze
- 10%
- 09-17
- 20%
- 09-22
- 50%
- 09-30
- 80%
- 10-08
- 90%
- 10-15
Growing season length (days, 28°F threshold)
- Short year
- 108
- Median
- 136
- Long year
- 167
Source NOAA station
BERLIN MUNI AP, NH US
7.6 mi · 30 yrs of record (1991–2020) · 1158 ft elev.
Data from BERLIN MUNI AP, NH US, 7.6 miles away with 30-year NOAA record (1991-2020).
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