Franklin County, Pennsylvania · Frost dates
Franklin County frost dates.
First-frost, last-frost, and growing-season length for Franklin County, Pennsylvania. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 05-05
- 20%
- 04-30
- 50%
- 04-18
- 80%
- 04-08
- 90%
- 04-03
First fall frost
- 10%
- 10-10
- 20%
- 10-15
- 50%
- 10-25
- 80%
- 11-03
- 90%
- 11-08
28°F — killing freeze
Last spring freeze
- 10%
- 04-21
- 20%
- 04-15
- 50%
- 04-04
- 80%
- 03-27
- 90%
- 03-21
First fall freeze
- 10%
- 10-23
- 20%
- 10-28
- 50%
- 11-06
- 80%
- 11-16
- 90%
- 11-21
Growing season length (days, 28°F threshold)
- Short year
- 185
- Median
- 216
- Long year
- 245
Source NOAA station
CHAMBERSBURG 1 ESE, PA US
4.5 mi · 30 yrs of record (1991–2020) · 640 ft elev.
Data from CHAMBERSBURG 1 ESE, PA US, 4.5 miles away with 30-year NOAA record (1991-2020).
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