McKean County, Pennsylvania · Frost dates
McKean County frost dates.
First-frost, last-frost, and growing-season length for McKean County, Pennsylvania. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 05-31
- 20%
- 05-27
- 50%
- 05-18
- 80%
- 05-05
- 90%
- 04-30
First fall frost
- 10%
- 09-18
- 20%
- 09-23
- 50%
- 10-01
- 80%
- 10-10
- 90%
- 10-15
28°F — killing freeze
Last spring freeze
- 10%
- 05-21
- 20%
- 05-16
- 50%
- 05-03
- 80%
- 04-23
- 90%
- 04-18
First fall freeze
- 10%
- 09-30
- 20%
- 10-04
- 50%
- 10-14
- 80%
- 10-26
- 90%
- 11-02
Growing season length (days, 28°F threshold)
- Short year
- 132
- Median
- 164
- Long year
- 198
Source NOAA station
BRADFORD RGNL AP, PA US
3.6 mi · 30 yrs of record (1991–2020) · 2117 ft elev.
Data from BRADFORD RGNL AP, PA US, 3.6 miles away with 30-year NOAA record (1991-2020).
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