Marathon, FL: May

31 May 2026: May 2026 averaged 81.9°F in Marathon, FL, the warmest May since 2025, tied 15th warmest of 66 (with 2013 and 2009).

May 2026

Mean temperature: 81.9°F; Warmest since 2025; 15th warmest of 66
Precipitation: 4.89 in; Wettest since 2024; 20th wettest of 65

A normal May in Marathon, FL (1991 to 2020): a mean temperature of 81.5°F, between 79.8°F and 83.3°F in eight years of ten and 2.21 in of precipitation, between 0.44 in and 8.98 in in eight years of ten.

The mean temperature of every May in Marathon, FL since 1951: 81.9°F in 2026; the highest is 85.9°F, in 2019.

Normal range, 79.8 to 83.3°F

Every year, ranked, as a table

Every May in Marathon, FL from 1950 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2026	81.9	15	86	44	77.9	6	4.89	20	0
2025	82.8	8	86.3	40	79.4	3	2.33	34	0
2024	84.1	2	88	10	80.2	1	7.11	8	0
2023	82.7	9	89.7	2	75.6	28	3.73	22	0
2022	82.6	10	88.6	6	76.5	16	2.65	30	0
2021	82.4	12	87.9	13	77	13	0.42	59	0
2020	80.9	30	86.8	29	74.9	35	15.66	1	0
2019	85.9	1	91.6	1	80.1	2	2.85	28	0
2018	80.6	35	85.3	51	76	24	9.70	5	0
2017	83.1	7	88.5	7	77.7	8	1.62	43	0
2016	81.6	21	87.2	23	76	24	2.32	35	0
2015	82.3	14	87.6	18	77.1	11	0.52	56	0
2014	81.7	19	87.2	23	76.3	18	1.07	50	0
2013	81.9	15	87.5	19	76.3	18	11.87	3	0
2012	81.8	18	86.9	26	76.7	15	5.23	16	0
2011	83.3	5	88.9	5	77.8	7	0.33	62	0
2010	82.5	11	87.8	14	77.3	10	0.14	64	0
2009	81.9	15	87.5	19	76.2	22	5.20	17	0
2008	83.3	5	89.1	4	77.4	9	1.23	46	1
2007	80.3	36	85.8	49	74.8	36	3.69	23	0
2006	80.7	34	86.5	36	74.8	36			0
2005	81.3	23	86.8	29	75.8	26	0.71	54	0
2004	80.8	32	86	44	75.5	29	0.74	53	0
2003	84.1	2	89.2	3	79	4	0.45	58	0
2002	83.4	4	88.5	7	78.3	5	2.51	32	3
2001	78.7	58	84	57	73.3	50	5.13	18	1
2000	81.4	22	86.7	32	76.2	22	1.76	42	0
1999	81.3	23	87.4	21	75.2	32	2.21	37	0
1998	81.3	23	87.3	22	75.4	31	1.04	51	1
1997	80.1	38	85.1	53	75.1	33	3.40	26	0
1996	79.9	42	84.3	56	75.5	29	3.52	25	0
1995	82.4	12	87.8	14	77.1	11	1.84	40	0
1994	80.8	32	87.2	23	74.5	40	8.80	7	0
1993	78.8	57	83.5	61	74.2	43	2.05	38	0
1992	77.8	65	83.8	58	71.8	63	0.39	61	0
1991	81.7	19	86.7	32	76.8	14	6.41	10	0
1990	80.1	38	83.8	58	76.4	17	5.90	13	0
1989	80.2	37	86.7	32	73.7	46	trace	65	0
1988	77.6	66	83.8	58	71.3	64	6.66	9	0
1987	78.9	56	82.8	65	75	34	2.04	39	1
1986	79.3	55	82.9	64	75.7	27	1.29	44	1
1985	81.2	28	86	44	76.3	18	3.92	21	0
1984	79.7	48	83	63	76.3	18	5.57	15	0
1983	78	63	81.8	66	74.2	43	1.17	48	0
1972	80.1	38	86.2	42	74.1	45	2.50	33	0
1971	81	29	87.7	17	74.4	41	2.61	31	0
1970	79.4	54	85.8	49	73	54	6.27	11	0
1969	81.3	23	87.8	14	74.8	36	3.37	27	0
1968	79.9	42	86.4	39	73.4	49	15.47	2	0
1967	80.9	30	88.2	9	73.6	47	1.08	49	0
1966	79.8	45	86.5	36	73.1	52	3.58	24	0
1965	79.8	45	86	44	73.6	47	0.16	63	0
1964	80.1	38	86	44	74.3	42	1.24	45	0
1963	78.5	61	85.1	53	72	61	2.25	36	0
1962	78.6	59	85.2	52	72.1	60	0.50	57	0
1961	79.9	42	86.6	35	73.3	50	2.68	29	0
1960	78.6	59	85.1	53	72	61	11.02	4	2
1959	79.6	51	86.2	42	73.1	52	9.45	6	0
1958	78	63	83.2	62	72.7	56	5.93	12	0
1957	81.3	23	88	10	74.7	39	5.64	14	0
1956	79.7	48	86.9	26	72.5	57	1.82	41	0
1955	79.6	51	86.9	26	72.4	58	0.82	52	0
1954	79.6	51	86.8	29	72.4	58	5.07	19	0
1953	79.7	48	88	10	71.3	64	1.18	47	1
1952	79.8	45	86.5	36	73	54	0.64	55	0
1951	78.4	62	86.3	40	70.6	66	0.40	60	0
1950									26

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2019	85.9
2024	84.1
2003	84.1
2002	83.4
2011	83.3
2008	83.3
2017	83.1
2025	82.8
2023	82.7
2022	82.6

Coldest
Year	Mean, °F
1988	77.6
1992	77.8
1983	78
1958	78
1951	78.4
1963	78.5
1962	78.6
1960	78.6
2001	78.7
1993	78.8

Wettest
Year	Precipitation, in
2020	15.66
1968	15.47
2013	11.87
1960	11.02
2018	9.70
1959	9.45
1994	8.80
2024	7.11
1988	6.66
1991	6.41

Driest
Year	Precipitation, in
1989	trace
2010	0.14
1965	0.16
2011	0.33
1992	0.39
1951	0.40
2021	0.42
2003	0.45
1962	0.50
2015	0.52

The hottest, coldest and wettest days

Hottest day: 90°F; 31 May 2026
Coldest night: 72°F; 4 May 2026
Wettest day: 1.29 in; 4 May 2026

Every month, season and year

Months

Seasons

Years

Marathon, FL the day's answers

All-time records

Every answer in words

May 2026 brought 4.89 in of precipitation in Marathon, FL, the wettest May since 2024, 20th wettest of 65.
The hottest day of May 2026 in Marathon, FL: 90°F on Sunday 31 May 2026.
The coldest night of May 2026 in Marathon, FL: a low of 72°F on Monday 4 May 2026.
The wettest day of May 2026 in Marathon, FL: 1.29 in on Monday 4 May 2026.