All-time weather records — Port Jefferson, OH

Record high
102.0°F
June 26, 1988
Record low
-31.0°F
January 19, 1994
Wettest day
4.65 in
August 8, 1995

Climate change signal in Port Jefferson

26.5%

of Port Jefferson's all-time daily heat records were set in the last decade (97 of 366 records since 2015).

13.7%

of all-time daily cold records were set in the last decade (50 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
·
·
1970s
10
16
1980s
85
111
1990s
69
98
2000s
58
54
2010s
89
66
2020s
55
21

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 1978, the latest in 2026. Period of observation: 1948-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 66.0°F — Jan 19, 1996 -31.0°F — Jan 19, 1994 2.91 in — Jan 11, 2005
February 73.9°F — Feb 21, 2018 -17.0°F — Feb 4, 1985 1.96 in — Feb 15, 1990
March 86.0°F — Mar 22, 2012 -9.0°F — Mar 9, 1984 2.50 in — Mar 5, 2011
April 88.0°F — Apr 27, 1986 12.9°F — Apr 5, 1995 2.73 in — Apr 5, 2025
May 93.0°F — May 28, 2012 24.1°F — May 3, 2005 3.12 in — May 28, 1982
June 102.0°F — Jun 26, 1988 36.0°F — Jun 5, 1990 4.55 in — Jun 9, 1958
July 100.9°F — Jul 8, 1988 44.1°F — Jul 1, 1988 3.52 in — Jul 13, 1992
August 100.0°F — Aug 21, 1983 39.9°F — Aug 29, 1986 4.65 in — Aug 8, 1995
September 98.1°F — Sep 3, 2011 30.0°F — Sep 23, 1995 3.12 in — Sep 8, 2020
October 91.0°F — Oct 1, 2019 19.0°F — Oct 25, 1981 2.82 in — Oct 1, 1977
November 80.1°F — Nov 2, 2016 1.9°F — Nov 13, 2019 3.13 in — Nov 16, 1955
December 71.1°F — Dec 3, 1982 -22.0°F — Dec 22, 1989 2.99 in — Dec 22, 2013

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