Armstrong County, Pennsylvania · Frost dates
Armstrong County frost dates.
First-frost, last-frost, and growing-season length for Armstrong County, Pennsylvania. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 05-20
- 20%
- 05-15
- 50%
- 05-04
- 80%
- 04-24
- 90%
- 04-20
First fall frost
- 10%
- 10-02
- 20%
- 10-07
- 50%
- 10-16
- 80%
- 10-25
- 90%
- 10-30
28°F — killing freeze
Last spring freeze
- 10%
- 05-09
- 20%
- 05-04
- 50%
- 04-23
- 80%
- 04-14
- 90%
- 04-10
First fall freeze
- 10%
- 10-12
- 20%
- 10-17
- 50%
- 10-28
- 80%
- 11-05
- 90%
- 11-08
Growing season length (days, 28°F threshold)
- Short year
- 156
- Median
- 188
- Long year
- 212
Source NOAA station
FORD CITY 4 S DAM, PA US
7.2 mi · 30 yrs of record (1991–2020) · 930 ft elev.
Data from FORD CITY 4 S DAM, PA US, 7.2 miles away with 30-year NOAA record (1991-2020).
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