Jefferson County, Tennessee · Frost dates
Jefferson County frost dates.
First-frost, last-frost, and growing-season length for Jefferson County, Tennessee. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 05-13
- 20%
- 05-07
- 50%
- 04-24
- 80%
- 04-15
- 90%
- 04-10
First fall frost
- 10%
- 10-06
- 20%
- 10-10
- 50%
- 10-17
- 80%
- 10-27
- 90%
- 11-01
28°F — killing freeze
Last spring freeze
- 10%
- 05-01
- 20%
- 04-24
- 50%
- 04-11
- 80%
- 04-01
- 90%
- 03-28
First fall freeze
- 10%
- 10-13
- 20%
- 10-17
- 50%
- 10-27
- 80%
- 11-04
- 90%
- 11-08
Growing season length (days, 28°F threshold)
- Short year
- 165
- Median
- 199
- Long year
- 225
Source NOAA station
JEFFERSON CITY, TN US
5.4 mi · 30 yrs of record (1991–2020) · 1108 ft elev.
Data from JEFFERSON CITY, TN US, 5.4 miles away with 30-year NOAA record (1991-2020).
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