All-time weather records — Lebanon, PA

Record high
102.9°F
July 4, 1966
Record low
-22.0°F
January 22, 1985
Wettest day
8.85 in
June 22, 1972

Climate change signal in Lebanon

17.5%

of Lebanon's all-time daily heat records were set in the last decade (64 of 366 records since 2015).

6%

of all-time daily cold records were set in the last decade (22 of 366 records since 2015).

If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:

Decade Heat records set # Cold records set #
1940s
·
·
1950s
·
·
1960s
42
43
1970s
52
108
1980s
78
94
1990s
57
59
2000s
51
33
2010s
47
24
2020s
39
5

Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 1966, the latest in 2026. Period of observation: 1948-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 70.0°F — Jan 26, 1967 -22.0°F — Jan 22, 1985 3.70 in — Jan 3, 1976
February 79.0°F — Feb 21, 2018 -11.9°F — Feb 18, 1979 2.04 in — Feb 1, 2008
March 84.0°F — Mar 30, 1998 -4.0°F — Mar 8, 1989 2.70 in — Mar 21, 2000
April 91.0°F — Apr 17, 2002 18.0°F — Apr 7, 1982 2.47 in — Apr 30, 2020
May 95.0°F — May 30, 1969 27.0°F — May 4, 2005 2.90 in — May 18, 2015
June 100.0°F — Jun 28, 1966 37.0°F — Jun 3, 1986 8.85 in — Jun 22, 1972
July 102.9°F — Jul 4, 1966 44.1°F — Jul 1, 1988 7.01 in — Jul 22, 2013
August 98.1°F — Aug 2, 2002 37.9°F — Aug 29, 1982 3.61 in — Aug 2, 2020
September 98.1°F — Sep 11, 1983 30.0°F — Sep 24, 1974 6.79 in — Sep 2, 1951
October 90.0°F — Oct 2, 2019 18.0°F — Oct 31, 1975 3.68 in — Oct 19, 1996
November 82.0°F — Nov 3, 1982 5.0°F — Nov 23, 1999 3.24 in — Nov 25, 1950
December 75.0°F — Dec 30, 1984 -4.0°F — Dec 31, 2017 3.18 in — Dec 4, 1950

Click a month to see every daily record for that month in Lebanon.