Blair County, Pennsylvania · Frost dates
Blair County frost dates.
First-frost, last-frost, and growing-season length for Blair County, Pennsylvania. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 05-14
- 20%
- 05-07
- 50%
- 04-25
- 80%
- 04-15
- 90%
- 04-10
First fall frost
- 10%
- 10-06
- 20%
- 10-10
- 50%
- 10-20
- 80%
- 10-30
- 90%
- 11-03
28°F — killing freeze
Last spring freeze
- 10%
- 05-01
- 20%
- 04-23
- 50%
- 04-12
- 80%
- 04-03
- 90%
- 03-30
First fall freeze
- 10%
- 10-16
- 20%
- 10-22
- 50%
- 11-01
- 80%
- 11-11
- 90%
- 11-17
Growing season length (days, 28°F threshold)
- Short year
- 168
- Median
- 203
- Long year
- 232
Source NOAA station
ALTOONA 7 SW, PA US
8.0 mi · 30 yrs of record (1991–2020) · 1180 ft elev.
Data from ALTOONA 7 SW, PA US, 8 miles away with 30-year NOAA record (1991-2020).
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