Guam August 18 Weather Records

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

August 18 All-Time Records
1945–2024

92 °F

71 °F

80 °F

Highest daily low

81 °F

2.97 inches

Most snow

none

August 18 Average Weather
1991–2020 ¹

Average high

87.2 °F

Average low

76.5 °F

Chance precipitation

82.6%

Chance snow

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2023	88	77	0.00	0.0
2022	88	76	0.01	0.0
2021	84	75	1.64	0.0
2020	88	80	0.08	0.0
2019	88	77	0.12	0.0
2018	90	80	0.10	0.0
2017	84	76	0.62	0.0
2016	86	78	0.80	0.0
2015	86	78	0.11	0.0
2014	89	77	0.00	0.0
2013	88	76	0.05	0.0
2012	80	76	0.12	0.0
2011	87	76	0.35	0.0
2010	88	78	0.06	0.0
2009	89	77	0.00	0.0
2008	86	75	0.37	0.0
2007	88	77	0.09	0.0
2006	84	77	0.25	0.0
2005	88	77	0.00	0.0
2004	89	76	0.43	0.0
2003	87	77	0.20	0.0
2002	86	77	0.20	0.0
2001	87	79	0.03	0.0
2000	83	75	1.63	0.0
1999	89	79	0.00	0.0
1998	88	77	0.45	0.0
1997	82	74	2.97	0.0
1996	90	80	0.07	0.0
1995	90	75	0.04	0.0
1994	89	79	0.03	0.0
1993	89	75	0.02	0.0
1992	92	76	0.01	0.0
1991	87	78	0.12	0.0
1990	83	71	1.29	0.0
1989	87	75	0.70	0.0
1988	90	79	0.00	0.0
1987	89	76	0.50	0.0
1986	90	81	0.04	0.0
1985	86	75	0.92	0.0
1984	80	74	1.92	0.0
1983	88	77	0.00	0.0
1982	90	77	0.08	0.0
1981	89	79	0.26	0.0
1980	89	77	1.11	0.0
1979	85	75	0.12	0.0
1978	87	75	0.70	0.0
1977	89	78	0.06	0.0
1976	84	77	0.03	0.0
1975	82	77	1.05	0.0
1974	81	78	0.00	0.0
1973	86	75	0.46	0.0
1972	84	76	0.32	0.0
1971	90	80	0.02	0.0
1970	87	78	0.00	0.0
1969	91	79	0.05	0.0
1968	85	74	0.73	0.0
1967	86	75	0.96	0.0
1966	90	79	0.00	0.0
1965	88	76	0.00	0.0
1964	91	77	0.00	0.0
1963	88	76	0.00	0.0
1962	88	76	0.00	n/a
1961	85	78	0.06	0.0
1960	85	74	0.94	0.0
1959	88	75	0.00	0.0
1958	83	74	1.09	0.0
1957	85	78	0.03	0.0
1956	87	76	0.06	n/a
1955	82	75	0.93	n/a
1954	86	75	0.33	n/a
1953	81	72	1.79	n/a
1952	86	76	0.14	n/a
1951	87	73	0.91	n/a
1950	86	75	0.18	n/a
1949	88	77	0.40	n/a
1948	84	75	1.77	n/a
1947	90	78	0.02	n/a
1946	n/a	n/a	n/a	n/a

What's the all-time high for Guam on 8/18?

For the date of Aug 18, the highest temperature ever reached in Guam history is 92 °F which happened in 1992.

Highest Temperatures in Guam on August 18

What's the all-time low for Guam on 8/18?

For the date of Aug 18, the lowest temperature ever reached in Guam history is 71 °F which happened in 1990.

Lowest Temperatures in Guam on August 18

Lowest High Temperatures in Guam on August 18

What's the most it has ever rained in Guam on 8/18?

For the date of Aug 18, the most precipitation ever recorded in Guam history is 2.97 inches which happened in 1997.

All-Time Most Precipitation in Guam on August 18

Weather Station Details

Years	Station	Coordinates
1945–2024	Guam International Airport	location