Biglerville, PA: frost dates by year

Last spring and first fall frost at NOAA station USC00360656, 1972 to 2025, measured from daily minimum temperatures.

Elevation 720 ft, 39.935, -77.255. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Apr 16	Oct 19
Earliest	Mar 22 (2005)	Sep 23 (1983)
Latest	May 27 (1994)	Nov 11 (2017)
Trend	3.1 days earlier per decade	4.6 days later per decade
Years with data	53	54

At 28°F (hard freeze) the median last spring date is Apr 8 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 10	Nov 7	Apr 9	Nov 11
2024	Mar 26	Nov 9	Mar 24	Nov 30
2023	Apr 25	Nov 2	Apr 10	Nov 3
2022	Apr 20	Oct 20	Mar 31	Nov 15
2021	Apr 23	Nov 4	Apr 3	Nov 4
2020	May 9	Oct 31	Apr 17	Nov 19
2019	Apr 4	Nov 2	Apr 4	Nov 2
2018	Apr 21	Oct 19	Apr 8	Nov 10
2017	Apr 8	Nov 11	Mar 24	Nov 11
2016	Apr 14	Oct 26	Apr 10	Nov 12
2015	Apr 12	Oct 18	Mar 30	Nov 22
2014	Apr 18	Nov 8	Apr 17	Nov 8
2013	May 14	Oct 25	Apr 5	Nov 4
2012	Mar 31	Oct 13	Mar 27	Nov 6
2011	Apr 6	Oct 29	Mar 30	Oct 30
2010	Apr 14	Oct 20	Mar 27	Oct 23
2009	Apr 13	Oct 19	Apr 13	Nov 7
2008	Apr 3	Oct 20	Mar 31	Nov 18
2007	Apr 11	Oct 29	Apr 11	Nov 8
2006	Apr 10	Oct 13	Mar 23	Nov 4
2005	Mar 22	Nov 11	Mar 18	Nov 18
2004	Apr 16	Nov 9	Apr 6	Nov 10
2003	Apr 10	Oct 24	Apr 1	Nov 9
2002	Apr 8	Oct 19	Apr 8	Nov 19
2001	Apr 20	Oct 8	Apr 19	Oct 9
2000	Apr 14	Oct 8	Mar 31	Oct 8
1999	Mar 27	Oct 6	Mar 26	Nov 16
1998	Mar 25	Nov 3	Mar 25	Nov 5
1997	May 9	Oct 23	Apr 20	Oct 29
1996	May 14	Oct 4	May 14	Oct 12
1995	Apr 16	Oct 19	Apr 7	Nov 4
1994	May 27	Oct 28	Apr 8	Nov 12
1993	Apr 28	Oct 1	Apr 4	Oct 1
1992	Apr 14	Oct 6	Apr 14	Oct 20
1991	Apr 13	Oct 8	Apr 3	Oct 20
1990	Apr 19	Oct 20	Apr 14	Oct 20
1989	Apr 24	Oct 8	Apr 23	Nov 4
1988	Apr 22	Oct 9	Mar 23	Oct 9
1987	Apr 9	Oct 5	Apr 2	Oct 26
1986	Apr 24	Oct 11	Mar 28	Nov 3
1985	Apr 11	Oct 29	Apr 11	Oct 29
1984	May 17	Nov 3	Apr 2	Nov 3
1983	May 17	Sep 23	Apr 20	Oct 30
1982	Apr 19	Oct 18	Apr 12	Oct 18
1981	Apr 22	Oct 13	Apr 21	Oct 20
1980	Apr 18	Oct 14	Apr 17	Oct 30
1979	Apr 11	Oct 10	Apr 8	Nov 5
1978	May 1	Oct 16	May 1	Oct 25
1977	Apr 29	Oct 18	Apr 10	Nov 13
1976	May 9	Oct 19	Apr 13	Oct 19
1975	Apr 22	Oct 3	Apr 14	Oct 31
1974	May 8	Sep 24	Apr 7	Oct 4
1973	Apr 15	Oct 18	Apr 14	Nov 6
1972	no data	Oct 10	no data	Oct 20

"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.