Boone County, Kentucky · Frost dates
Boone County frost dates.
First-frost, last-frost, and growing-season length for Boone County, Kentucky. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 05-07
- 20%
- 04-30
- 50%
- 04-18
- 80%
- 04-08
- 90%
- 04-03
First fall frost
- 10%
- 10-12
- 20%
- 10-17
- 50%
- 10-25
- 80%
- 11-01
- 90%
- 11-05
28°F — killing freeze
Last spring freeze
- 10%
- 04-23
- 20%
- 04-17
- 50%
- 04-05
- 80%
- 03-27
- 90%
- 03-21
First fall freeze
- 10%
- 10-22
- 20%
- 10-27
- 50%
- 11-03
- 80%
- 11-11
- 90%
- 11-16
Growing season length (days, 28°F threshold)
- Short year
- 182
- Median
- 212
- Long year
- 240
Source NOAA station
CINCINNATI NORTHERN KY AP, KY US
6.8 mi · 30 yrs of record (1991–2020) · 869 ft elev.
Data from CINCINNATI NORTHERN KY AP, KY US, 6.8 miles away with 30-year NOAA record (1991-2020).
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