Frost history / Lehighton 1SSW, PA

Lehighton 1SSW, PA: frost dates by year

Last spring and first fall frost at NOAA station USC00364934, 2011 to 2025, measured from daily minimum temperatures.

Elevation 455 ft, 40.822, -75.696. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 26	Oct 20
Earliest	Apr 9 (2017)	Oct 9 (2022)
Latest	May 18 (2023)	Nov 3 (2021)
Trend	2.7 days later per decade	little change (less than half a day per decade)
Years with data	14	15

At 28°F (hard freeze) the median last spring date is Apr 4 and the median first fall date is Nov 4.

The trend is a straight-line fit through the years with a freeze. A positive spring trend means the last frost now comes later. Short or patchy records give noisy trends.

Chart

Last spring frost (32°F)

First fall frost (32°F)

Dots are single years. The gray line is the median, the green line the fitted trend.

Year by year

Year	Last spring 32°F	First fall 32°F	Last spring 28°F	First fall 28°F
2025	Apr 18	Oct 27	Apr 9	Nov 7
2024	Apr 26	Oct 17	Mar 26	Nov 13
2023	May 18	Oct 24	Apr 10	Nov 2
2022	May 1	Oct 9	Apr 19	Oct 19
2021	Apr 23	Nov 3	Apr 4	Nov 4
2020	May 13	Oct 18	Apr 19	Oct 31
2019	Apr 30	Oct 19	Apr 4	Nov 4
2018	no data	Oct 19	no data	Nov 11
2017	Apr 9	Nov 1	Mar 25	Nov 11
2016	Apr 15	Oct 26	Apr 10	Oct 26
2015	Apr 26	Oct 18	Apr 5	Oct 19
2014	Apr 21	Oct 20	Apr 19	Nov 13
2013	May 14	Oct 23	Apr 3	Oct 26
2012	Apr 30	Oct 13	Mar 12	Nov 6
2011	Apr 22	Oct 28	Mar 30	Oct 31

"none" means the station recorded no freeze at that threshold in that half of the year. "no data" means more than 10% of the season's daily readings were missing. Years with no usable data are left out. See the methodology for the rules, and the ZIP lookup for 1991 to 2020 frost probabilities.