Lancaster County, Pennsylvania · Frost dates
Lancaster County frost dates.
First-frost, last-frost, and growing-season length for Lancaster County, Pennsylvania. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 05-07
- 20%
- 05-02
- 50%
- 04-19
- 80%
- 04-10
- 90%
- 04-05
First fall frost
- 10%
- 10-09
- 20%
- 10-15
- 50%
- 10-24
- 80%
- 11-02
- 90%
- 11-06
28°F — killing freeze
Last spring freeze
- 10%
- 04-24
- 20%
- 04-17
- 50%
- 04-05
- 80%
- 03-28
- 90%
- 03-22
First fall freeze
- 10%
- 10-20
- 20%
- 10-26
- 50%
- 11-04
- 80%
- 11-14
- 90%
- 11-20
Growing season length (days, 28°F threshold)
- Short year
- 179
- Median
- 213
- Long year
- 243
Source NOAA station
LANCASTER 2NE FLTR PLT, PA US
1.4 mi · 30 yrs of record (1991–2020) · 270 ft elev.
Data from LANCASTER 2NE FLTR PLT, PA US, 1.4 miles away with 30-year NOAA record (1991-2020).
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