Knox County, Kentucky · Frost dates
Knox County frost dates.
First-frost, last-frost, and growing-season length for Knox County, Kentucky. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 05-06
- 20%
- 05-01
- 50%
- 04-19
- 80%
- 04-09
- 90%
- 04-04
First fall frost
- 10%
- 10-11
- 20%
- 10-16
- 50%
- 10-24
- 80%
- 11-01
- 90%
- 11-03
28°F — killing freeze
Last spring freeze
- 10%
- 04-23
- 20%
- 04-16
- 50%
- 04-06
- 80%
- 03-28
- 90%
- 03-22
First fall freeze
- 10%
- 10-20
- 20%
- 10-24
- 50%
- 11-01
- 80%
- 11-09
- 90%
- 11-15
Growing season length (days, 28°F threshold)
- Short year
- 180
- Median
- 209
- Long year
- 238
Source NOAA station
BARBOURVILLE, KY US
1.5 mi · 30 yrs of record (1991–2020) · 990 ft elev.
Data from BARBOURVILLE, KY US, 1.5 miles away with 30-year NOAA record (1991-2020).
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