Northwest Hills Planning Region, Connecticut · Frost dates
Northwest Hills Planning Region frost dates.
First-frost, last-frost, and growing-season length for Northwest Hills Planning Region, Connecticut. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 05-17
- 20%
- 05-13
- 50%
- 05-03
- 80%
- 04-25
- 90%
- 04-21
First fall frost
- 10%
- 10-01
- 20%
- 10-03
- 50%
- 10-11
- 80%
- 10-22
- 90%
- 10-28
28°F — killing freeze
Last spring freeze
- 10%
- 05-06
- 20%
- 04-30
- 50%
- 04-20
- 80%
- 04-11
- 90%
- 04-07
First fall freeze
- 10%
- 10-09
- 20%
- 10-13
- 50%
- 10-25
- 80%
- 11-04
- 90%
- 11-08
Growing season length (days, 28°F threshold)
- Short year
- 156
- Median
- 188
- Long year
- 215
Source NOAA station
NORFOLK 2 SW, CT US
8.1 mi · 30 yrs of record (1991–2020) · 1340 ft elev.
Data from NORFOLK 2 SW, CT US, 8.1 miles away with 30-year NOAA record (1991-2020).
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