Marathon, FL: records

4 October 2026: The hottest day on record in Marathon, FL: 99°F on Monday 24 July 2023, Thursday 13 July 2023 and Wednesday 15 July 1987.

The record begins: 1950

All-time records

Hottest day: 99°F; 24 July 2023, 13 July 2023, 15 July 1987
Coldest night: 37°F; 25 December 1989, 24 December 1989
Wettest day: 8.33 in; 24 August 1995
Warmest night: 87°F; 10 August 2023, 9 August 2023, 8 August 2023, 18 July 2023
Coldest day: 49°F; 25 December 1989

Daily records by decade

New daily records set in Marathon, FL by decade since the 1980s: the most record highs, 104, came in the 2010s; the most record lows, 40, in the 1990s.

Record highs
Record lows

Every decade as a table

Decade	Record highs	Record lows	Years in the record
1950s	0	0	10
1960s	0	0	10
1970s	0	0	10
1980s	13	4	10
1990s	48	40	10
2000s	101	17	10
2010s	104	18	10
2020s	75	4	7

Records by month

Month	Highest	Lowest	Wettest day
January	88°F 3 January 2017	39°F 11 January 2010	7.01 in 23 January 1983
February	89°F 24 February 2019	40°F 4 February 1996, 24 February 1989	3.95 in 3 February 1998
March	90°F 30 March 2023, 16 March 2019	48°F 15 March 1993, 2 March 1986	4.64 in 29 March 1967
April	94°F 16 April 2020, 26 April 2019, 26 April 2015	52°F 4 April 1987	3.54 in 29 April 2012
May	96°F 14 May 2019	61°F 10 May 1963	7.08 in 20 May 2024
June	98°F 8 June 2019	65°F 7 June 2008, 1 June 1955	5.47 in 3 June 2022
July	99°F 24 July 2023, 13 July 2023, 15 July 1987	65°F 26 July 1953	3.34 in 21 July 2006
August	98°F 10 August 1987, 15 August 1964, 22 August 1952	67°F 27 August 1957	8.33 in 24 August 1995
September	97°F 17 September 2023, 16 September 2023	66°F 22 September 1959, 28 September 1954, 4 September 1953	8.13 in 12 September 2020
October	96°F 4 October 1989, 4 October 1988, 9 October 1971	56°F 28 October 1957, 31 October 1953	8.28 in 12 October 2010
November	91°F 6 November 1988	44°F 25 November 1970	6.68 in 15 November 2023
December	88°F 4 December 2018, 19 December 2016, 18 December 2016 and 3 more	37°F 25 December 1989, 24 December 1989	4.29 in 25 December 1986

Streaks, months and years

Longest heat streak	72 days	8 July to 17 September 2011	A high of 90°F or above
Wettest month	20.34 in	October 2011
Driest month	0.00 in	April 1998
Wettest year	70.09 in	1959
Driest year	21.16 in	1989

Every record in words

The coldest night on record in Marathon, FL: a low of 37°F on Monday 25 December 1989 and Sunday 24 December 1989.
The wettest day on record in Marathon, FL: 8.33 in on Thursday 24 August 1995.
The warmest night on record in Marathon, FL: a low of 87°F on Thursday 10 August 2023, Wednesday 9 August 2023, Tuesday 8 August 2023 and 1 other day.
The coldest day on record in Marathon, FL: a high of 49°F on Monday 25 December 1989.
The longest run of days with a high of 90°F or above in Marathon, FL: 72 days, from Friday 8 July to Saturday 17 September 2011.
The wettest month on record in Marathon, FL: October 2011, with 20.34 in of precipitation.
The driest month on record in Marathon, FL: April 1998, with 0.00 in of precipitation.
The wettest year on record in Marathon, FL: 1959, with 70.09 in of precipitation.
The driest year on record in Marathon, FL: 1989, with 21.16 in of precipitation.

Marathon, FL the day's answers