Union County, New Jersey · Frost dates
Union County frost dates.
First-frost, last-frost, and growing-season length for Union County, New Jersey. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 04-28
- 20%
- 04-22
- 50%
- 04-11
- 80%
- 04-02
- 90%
- 03-30
First fall frost
- 10%
- 10-14
- 20%
- 10-20
- 50%
- 10-31
- 80%
- 11-09
- 90%
- 11-15
28°F — killing freeze
Last spring freeze
- 10%
- 04-12
- 20%
- 04-07
- 50%
- 03-30
- 80%
- 03-19
- 90%
- 03-14
First fall freeze
- 10%
- 10-27
- 20%
- 11-01
- 50%
- 11-12
- 80%
- 11-23
- 90%
- 12-01
Growing season length (days, 28°F threshold)
- Short year
- 198
- Median
- 227
- Long year
- 262
Source NOAA station
CRANFORD, NJ US
0.9 mi · 30 yrs of record (1991–2020) · 80 ft elev.
Data from CRANFORD, NJ US, 0.9 miles away with 30-year NOAA record (1991-2020).
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