Naugatuck Valley Planning Region, Connecticut · Frost dates
Naugatuck Valley Planning Region frost dates.
First-frost, last-frost, and growing-season length for Naugatuck Valley Planning Region, Connecticut. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 05-10
- 20%
- 05-06
- 50%
- 04-25
- 80%
- 04-14
- 90%
- 04-11
First fall frost
- 10%
- 10-04
- 20%
- 10-08
- 50%
- 10-17
- 80%
- 10-27
- 90%
- 11-01
28°F — killing freeze
Last spring freeze
- 10%
- 04-27
- 20%
- 04-20
- 50%
- 04-10
- 80%
- 04-02
- 90%
- 03-30
First fall freeze
- 10%
- 10-14
- 20%
- 10-19
- 50%
- 10-30
- 80%
- 11-08
- 90%
- 11-13
Growing season length (days, 28°F threshold)
- Short year
- 170
- Median
- 203
- Long year
- 228
Source NOAA station
ANSONIA 1 NE, CT US
11.7 mi · 30 yrs of record (1991–2020) · 136 ft elev.
Data from ANSONIA 1 NE, CT US, 11.7 miles away with 30-year NOAA record (1991-2020).
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