Knox County, Ohio · Frost dates
Knox County frost dates.
First-frost, last-frost, and growing-season length for Knox County, Ohio. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 05-18
- 20%
- 05-12
- 50%
- 05-01
- 80%
- 04-23
- 90%
- 04-18
First fall frost
- 10%
- 09-27
- 20%
- 10-01
- 50%
- 10-10
- 80%
- 10-20
- 90%
- 10-24
28°F — killing freeze
Last spring freeze
- 10%
- 05-06
- 20%
- 05-01
- 50%
- 04-21
- 80%
- 04-12
- 90%
- 04-07
First fall freeze
- 10%
- 10-07
- 20%
- 10-12
- 50%
- 10-23
- 80%
- 10-31
- 90%
- 11-03
Growing season length (days, 28°F threshold)
- Short year
- 154
- Median
- 185
- Long year
- 210
Source NOAA station
FREDERICKTOWN 4 S, OH US
5.9 mi · 30 yrs of record (1991–2020) · 1050 ft elev.
Data from FREDERICKTOWN 4 S, OH US, 5.9 miles away with 30-year NOAA record (1991-2020).
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