All-time weather records — Slidell, LA

Record high
104.0°F
June 21, 1964
Record low
8.1°F
January 21, 1985
Wettest day
13.42 in
May 10, 1995

Climate change signal in Slidell

14.5%

of Slidell's all-time daily heat records were set in the last decade (53 of 366 records since 2015).

4.4%

of all-time daily cold records were set in the last decade (16 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 #
1950s
32
27
1960s
96
69
1970s
64
95
1980s
73
57
1990s
20
47
2000s
25
35
2010s
16
26
2020s
40
10

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 1956, the latest in 2026. Period of observation: 1956-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 81.0°F — Jan 10, 1972 8.1°F — Jan 21, 1985 5.57 in — Jan 25, 1978
February 86.0°F — Feb 6, 1957 15.1°F — Feb 5, 1996 4.30 in — Feb 2, 2005
March 89.1°F — Mar 31, 1963 21.9°F — Mar 3, 1980 9.63 in — Mar 17, 1961
April 91.9°F — Apr 28, 1987 32.0°F — Apr 3, 1971 7.26 in — Apr 7, 1983
May 95.0°F — May 5, 2002 41.0°F — May 4, 2013 13.42 in — May 10, 1995
June 104.0°F — Jun 21, 1964 50.0°F — Jun 1, 1984 8.70 in — Jun 19, 2021
July 102.0°F — Jul 16, 1980 57.0°F — Jul 16, 1967 7.55 in — Jul 21, 1958
August 102.9°F — Aug 2, 1970 55.0°F — Aug 6, 2011 10.00 in — Aug 30, 2021
September 99.0°F — Sep 2, 1989 37.9°F — Sep 13, 2002 6.82 in — Sep 26, 2002
October 93.9°F — Oct 5, 2019 30.9°F — Oct 28, 1957 6.20 in — Oct 23, 2007
November 90.0°F — Nov 20, 1965 23.0°F — Nov 5, 1996 5.37 in — Nov 29, 1997
December 86.0°F — Dec 5, 1961 9.0°F — Dec 23, 1989 4.76 in — Dec 2, 2023

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