Jefferson County, Kentucky · Frost dates
Jefferson County frost dates.
First-frost, last-frost, and growing-season length for Jefferson County, Kentucky. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 04-19
- 20%
- 04-14
- 50%
- 04-03
- 80%
- 03-24
- 90%
- 03-18
First fall frost
- 10%
- 10-21
- 20%
- 10-25
- 50%
- 11-03
- 80%
- 11-11
- 90%
- 11-16
28°F — killing freeze
Last spring freeze
- 10%
- 04-05
- 20%
- 04-01
- 50%
- 03-22
- 80%
- 03-10
- 90%
- 03-04
First fall freeze
- 10%
- 11-01
- 20%
- 11-04
- 50%
- 11-13
- 80%
- 11-24
- 90%
- 12-01
Growing season length (days, 28°F threshold)
- Short year
- 210
- Median
- 236
- Long year
- 272
Source NOAA station
LOUISVILLE BOWMAN FLD, KY US
2.7 mi · 30 yrs of record (1991–2020) · 540 ft elev.
Data from LOUISVILLE BOWMAN FLD, KY US, 2.7 miles away with 30-year NOAA record (1991-2020).
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