Defiance County, Ohio · Frost dates
Defiance County frost dates.
First-frost, last-frost, and growing-season length for Defiance County, Ohio. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 05-14
- 20%
- 05-08
- 50%
- 04-28
- 80%
- 04-17
- 90%
- 04-13
First fall frost
- 10%
- 10-01
- 20%
- 10-06
- 50%
- 10-17
- 80%
- 10-27
- 90%
- 11-01
28°F — killing freeze
Last spring freeze
- 10%
- 05-03
- 20%
- 04-28
- 50%
- 04-15
- 80%
- 04-06
- 90%
- 04-01
First fall freeze
- 10%
- 10-15
- 20%
- 10-20
- 50%
- 10-30
- 80%
- 11-07
- 90%
- 11-12
Growing season length (days, 28°F threshold)
- Short year
- 165
- Median
- 198
- Long year
- 225
Source NOAA station
DEFIANCE MEM AP, OH US
3.2 mi · 30 yrs of record (1991–2020) · 708 ft elev.
Data from DEFIANCE MEM AP, OH US, 3.2 miles away with 30-year NOAA record (1991-2020).
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