All-time weather records — St. Marks, FL

Record high
105.1°F
June 15, 2011
Record low
6.1°F
January 21, 1985
Wettest day
8.86 in
September 21, 1969

Climate change signal in St. Marks

24.6%

of St. Marks's all-time daily heat records were set in the last decade (90 of 366 records since 2015).

1.9%

of all-time daily cold records were set in the last decade (7 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
38
20
1950s
23
16
1960s
32
56
1970s
20
96
1980s
36
70
1990s
54
46
2000s
37
35
2010s
80
21
2020s
46
6

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 1940, the latest in 2026. Period of observation: 1940-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 84.0°F — Jan 19, 2023 6.1°F — Jan 21, 1985 4.93 in — Jan 19, 1991
February 89.1°F — Feb 28, 1948 14.0°F — Feb 5, 2009 5.59 in — Feb 27, 1964
March 91.0°F — Mar 21, 2006 19.9°F — Mar 2, 1986 7.09 in — Mar 31, 1962
April 95.0°F — Apr 22, 1968 28.9°F — Apr 1, 1987 4.93 in — Apr 14, 1948
May 102.0°F — May 27, 1953 34.0°F — May 4, 1971 5.09 in — May 27, 1991
June 105.1°F — Jun 15, 2011 46.0°F — Jun 1, 1984 8.17 in — Jun 11, 2001
July 102.9°F — Jul 7, 2000 57.0°F — Jul 16, 1967 8.21 in — Jul 18, 1964
August 102.9°F — Aug 15, 1995 57.0°F — Aug 23, 1997 7.07 in — Aug 31, 1950
September 100.9°F — Sep 2, 2024 39.9°F — Sep 30, 1967 8.86 in — Sep 21, 1969
October 97.0°F — Oct 3, 2019 28.9°F — Oct 29, 2008 7.79 in — Oct 7, 1996
November 89.1°F — Nov 2, 2015 12.9°F — Nov 25, 1970 4.93 in — Nov 27, 1976
December 84.0°F — Dec 7, 2013 10.0°F — Dec 13, 1962 7.44 in — Dec 23, 2014

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