Mahoning County, Ohio · Frost dates
Mahoning County frost dates.
First-frost, last-frost, and growing-season length for Mahoning County, Ohio. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 05-25
- 20%
- 05-19
- 50%
- 05-08
- 80%
- 04-29
- 90%
- 04-23
First fall frost
- 10%
- 09-30
- 20%
- 10-03
- 50%
- 10-12
- 80%
- 10-22
- 90%
- 10-26
28°F — killing freeze
Last spring freeze
- 10%
- 05-15
- 20%
- 05-09
- 50%
- 04-27
- 80%
- 04-18
- 90%
- 04-13
First fall freeze
- 10%
- 10-08
- 20%
- 10-15
- 50%
- 10-26
- 80%
- 11-04
- 90%
- 11-07
Growing season length (days, 28°F threshold)
- Short year
- 146
- Median
- 182
- Long year
- 208
Source NOAA station
WARREN 3 S, OH US
13.4 mi · 30 yrs of record (1991–2020) · 900 ft elev.
Data from WARREN 3 S, OH US, 13.4 miles away with 30-year NOAA record (1991-2020).
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