Jefferson County, West Virginia · Frost dates
Jefferson County frost dates.
First-frost, last-frost, and growing-season length for Jefferson County, West Virginia. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 05-12
- 20%
- 05-04
- 50%
- 04-20
- 80%
- 04-09
- 90%
- 04-03
First fall frost
- 10%
- 10-07
- 20%
- 10-11
- 50%
- 10-22
- 80%
- 10-31
- 90%
- 11-04
28°F — killing freeze
Last spring freeze
- 10%
- 04-22
- 20%
- 04-15
- 50%
- 04-04
- 80%
- 03-27
- 90%
- 03-22
First fall freeze
- 10%
- 10-16
- 20%
- 10-23
- 50%
- 11-01
- 80%
- 11-10
- 90%
- 11-14
Growing season length (days, 28°F threshold)
- Short year
- 177
- Median
- 211
- Long year
- 237
Source NOAA station
MARTINSBURG E WV RGNL AP, WV US
9.2 mi · 30 yrs of record (1991–2020) · 534 ft elev.
Data from MARTINSBURG E WV RGNL AP, WV US, 9.2 miles away with 30-year NOAA record (1991-2020).
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