Grayson County, Virginia · Frost dates
Grayson County frost dates.
First-frost, last-frost, and growing-season length for Grayson County, Virginia. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 05-02
- 20%
- 04-27
- 50%
- 04-16
- 80%
- 04-07
- 90%
- 04-03
First fall frost
- 10%
- 10-15
- 20%
- 10-19
- 50%
- 10-27
- 80%
- 11-04
- 90%
- 11-08
28°F — killing freeze
Last spring freeze
- 10%
- 04-18
- 20%
- 04-14
- 50%
- 04-05
- 80%
- 03-28
- 90%
- 03-22
First fall freeze
- 10%
- 10-24
- 20%
- 10-28
- 50%
- 11-04
- 80%
- 11-14
- 90%
- 11-19
Growing season length (days, 28°F threshold)
- Short year
- 189
- Median
- 213
- Long year
- 242
Source NOAA station
ELK CREEK 4SSW, VA US
1.8 mi · 30 yrs of record (1991–2020) · 3439 ft elev.
Data from ELK CREEK 4SSW, VA US, 1.8 miles away with 30-year NOAA record (1991-2020).
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