Hamilton County, Tennessee · Frost dates
Hamilton County frost dates.
First-frost, last-frost, and growing-season length for Hamilton County, Tennessee. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 04-28
- 20%
- 04-20
- 50%
- 04-07
- 80%
- 03-27
- 90%
- 03-20
First fall frost
- 10%
- 10-13
- 20%
- 10-19
- 50%
- 10-29
- 80%
- 11-07
- 90%
- 11-12
28°F — killing freeze
Last spring freeze
- 10%
- 04-13
- 20%
- 04-06
- 50%
- 03-27
- 80%
- 03-14
- 90%
- 03-06
First fall freeze
- 10%
- 10-23
- 20%
- 10-30
- 50%
- 11-08
- 80%
- 11-20
- 90%
- 11-28
Growing season length (days, 28°F threshold)
- Short year
- 193
- Median
- 226
- Long year
- 267
Source NOAA station
SODDY DAISY-MOWBRAY MTN, TN US
8.4 mi · 30 yrs of record (1991–2020) · 1700 ft elev.
Data from SODDY DAISY-MOWBRAY MTN, TN US, 8.4 miles away with 30-year NOAA record (1991-2020).
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