Lehigh County, Pennsylvania · Frost dates
Lehigh County frost dates.
First-frost, last-frost, and growing-season length for Lehigh County, Pennsylvania. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 05-06
- 20%
- 04-30
- 50%
- 04-20
- 80%
- 04-11
- 90%
- 04-06
First fall frost
- 10%
- 10-08
- 20%
- 10-13
- 50%
- 10-24
- 80%
- 11-02
- 90%
- 11-06
28°F — killing freeze
Last spring freeze
- 10%
- 04-18
- 20%
- 04-13
- 50%
- 04-05
- 80%
- 03-29
- 90%
- 03-23
First fall freeze
- 10%
- 10-19
- 20%
- 10-26
- 50%
- 11-04
- 80%
- 11-13
- 90%
- 11-18
Growing season length (days, 28°F threshold)
- Short year
- 184
- Median
- 213
- Long year
- 240
Source NOAA station
ALLENTOWN INTL AP, PA US
7.8 mi · 30 yrs of record (1991–2020) · 390 ft elev.
Data from ALLENTOWN INTL AP, PA US, 7.8 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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