Guam May 18 Weather Records

Daily averages and all-time records for weather in Guam for the date of May 18.

May 18 All-Time Records
1945–2024

92 °F

74 °F

79 °F

Highest daily low

81 °F

3.39 inches

Most snow

none

May 18 Average Weather
1991–2020 ¹

Average high

88.7 °F

Average low

77.8 °F

Chance precipitation

60.9%

Chance snow

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2023	88	78	0.04	0.0
2022	89	76	0.09	0.0
2021	87	78	0.10	0.0
2020	89	81	0.00	0.0
2019	89	79	0.00	0.0
2018	88	79	0.08	0.0
2017	89	80	0.07	0.0
2016	90	81	0.00	0.0
2015	87	76	0.04	0.0
2014	89	79	0.15	0.0
2013	91	80	0.00	0.0
2012	88	79	0.18	0.0
2011	85	76	0.21	0.0
2010	89	79	0.00	0.0
2009	89	78	0.00	0.0
2008	88	77	0.18	0.0
2007	87	80	0.00	0.0
2006	88	79	0.00	0.0
2005	86	75	0.16	0.0
2004	88	75	0.79	0.0
2003	89	78	0.34	0.0
2002	86	78	0.82	0.0
2001	90	76	0.00	0.0
2000	85	76	0.65	0.0
1999	89	77	0.01	0.0
1998	89	77	0.15	0.0
1997	89	78	0.07	0.0
1996	87	78	0.09	0.0
1995	89	75	0.80	0.0
1994	89	76	0.00	0.0
1993	89	76	0.01	0.0
1992	90	74	0.00	0.0
1991	89	79	0.00	0.0
1990	88	79	0.03	0.0
1989	89	76	0.01	0.0
1988	90	80	0.00	0.0
1987	92	79	0.00	0.0
1986	88	74	0.52	0.0
1985	85	74	1.72	0.0
1984	91	77	0.00	0.0
1983	88	77	0.05	0.0
1982	85	77	0.31	0.0
1981	89	80	0.11	0.0
1980	88	77	0.23	0.0
1979	88	76	0.24	0.0
1978	87	79	0.00	0.0
1977	81	75	3.39	0.0
1976	85	77	0.02	0.0
1975	86	80	0.00	0.0
1974	84	77	0.50	0.0
1973	86	78	0.00	0.0
1972	88	76	0.00	0.0
1971	87	78	0.15	0.0
1970	84	77	0.82	0.0
1969	89	77	0.00	0.0
1968	86	76	0.10	0.0
1967	86	74	0.00	0.0
1966	88	75	0.00	0.0
1965	88	74	0.00	0.0
1964	84	74	0.27	0.0
1963	87	77	0.40	0.0
1962	79	75	1.66	0.0
1961	85	78	0.00	0.0
1960	87	74	0.00	0.0
1959	85	78	0.06	0.0
1958	86	78	0.00	0.0
1957	86	76	0.05	0.0
1956	88	76	0.00	n/a
1955	85	77	0.00	n/a
1954	88	77	0.02	n/a
1953	86	75	0.43	n/a
1952	86	77	0.04	n/a
1951	86	76	0.00	n/a
1950	85	75	0.06	n/a
1949	87	74	0.07	n/a
1948	85	78	0.59	n/a
1947	87	76	0.00	n/a
1946	n/a	n/a	n/a	n/a

What's the all-time high for Guam on 5/18?

For the date of May 18, the highest temperature ever reached in Guam history is 92 °F which happened in 1987.

Highest Temperatures in Guam on May 18

What's the all-time low for Guam on 5/18?

For the date of May 18, the lowest temperature ever reached in Guam history is 74 °F which has happened 8 times, most recently in 1992.

Lowest Temperatures in Guam on May 18

Lowest High Temperatures in Guam on May 18

What's the most it has ever rained in Guam on 5/18?

For the date of May 18, the most precipitation ever recorded in Guam history is 3.39 inches which happened in 1977.

All-Time Most Precipitation in Guam on May 18

Weather Station Details

Years	Station	Coordinates
1945–2024	Guam International Airport	location