Richland County, Ohio · Frost dates
Richland County frost dates.
First-frost, last-frost, and growing-season length for Richland County, Ohio. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6a
32°F — light freeze
Last spring frost
- 10%
- 05-12
- 20%
- 05-06
- 50%
- 04-26
- 80%
- 04-18
- 90%
- 04-14
First fall frost
- 10%
- 10-06
- 20%
- 10-12
- 50%
- 10-22
- 80%
- 10-31
- 90%
- 11-04
28°F — killing freeze
Last spring freeze
- 10%
- 05-02
- 20%
- 04-25
- 50%
- 04-16
- 80%
- 04-05
- 90%
- 04-01
First fall freeze
- 10%
- 10-19
- 20%
- 10-24
- 50%
- 11-02
- 80%
- 11-11
- 90%
- 11-15
Growing season length (days, 28°F threshold)
- Short year
- 170
- Median
- 200
- Long year
- 228
Source NOAA station
MANSFIELD LAHM MUNI AP, OH US
3.4 mi · 30 yrs of record (1991–2020) · 1295 ft elev.
Data from MANSFIELD LAHM MUNI AP, OH US, 3.4 miles away with 30-year NOAA record (1991-2020).
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