King William County, Virginia · Frost dates
King William County frost dates.
First-frost, last-frost, and growing-season length for King William County, Virginia. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 04-23
- 20%
- 04-18
- 50%
- 04-07
- 80%
- 03-29
- 90%
- 03-24
First fall frost
- 10%
- 10-18
- 20%
- 10-24
- 50%
- 11-01
- 80%
- 11-09
- 90%
- 11-14
28°F — killing freeze
Last spring freeze
- 10%
- 04-11
- 20%
- 04-05
- 50%
- 03-27
- 80%
- 03-16
- 90%
- 03-08
First fall freeze
- 10%
- 10-29
- 20%
- 11-02
- 50%
- 11-11
- 80%
- 11-23
- 90%
- 12-01
Growing season length (days, 28°F threshold)
- Short year
- 201
- Median
- 229
- Long year
- 268
Source NOAA station
WALKERTON 2 NW, VA US
3.7 mi · 30 yrs of record (1991–2020) · 50 ft elev.
Data from WALKERTON 2 NW, VA US, 3.7 miles away with 30-year NOAA record (1991-2020).
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