Polk County, Tennessee · Frost dates
Polk County frost dates.
First-frost, last-frost, and growing-season length for Polk County, Tennessee. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 04-21
- 20%
- 04-16
- 50%
- 04-06
- 80%
- 03-27
- 90%
- 03-20
First fall frost
- 10%
- 10-18
- 20%
- 10-22
- 50%
- 10-30
- 80%
- 11-06
- 90%
- 11-11
28°F — killing freeze
Last spring freeze
- 10%
- 04-10
- 20%
- 04-05
- 50%
- 03-26
- 80%
- 03-13
- 90%
- 03-06
First fall freeze
- 10%
- 10-25
- 20%
- 10-31
- 50%
- 11-08
- 80%
- 11-19
- 90%
- 11-25
Growing season length (days, 28°F threshold)
- Short year
- 198
- Median
- 227
- Long year
- 264
Source NOAA station
CLEVELAND FLTR PLT, TN US
16.1 mi · 30 yrs of record (1991–2020) · 842 ft elev.
Data from CLEVELAND FLTR PLT, TN US, 16.1 miles away with 30-year NOAA record (1991-2020).
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