Guam September 18 Weather Records

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

September 18 All-Time Records
1945–2024

93 °F

73 °F

82 °F

Highest daily low

81 °F

2.35 inches

Most snow

none

September 18 Average Weather
1991–2020 ¹

Average high

87.1 °F

Average low

76.4 °F

Chance precipitation

83.8%

Chance snow

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2023	86	78	0.34	0.0
2022	87	75	0.02	0.0
2021	88	79	0.00	0.0
2020	88	81	0.21	0.0
2019	87	74	1.41	0.0
2018	92	79	0.09	0.0
2017	87	77	0.11	0.0
2016	86	78	0.32	0.0
2015	89	78	0.00	0.0
2014	93	76	0.00	0.0
2013	87	76	0.77	0.0
2012	84	76	2.13	0.0
2011	88	78	0.33	0.0
2010	85	77	0.83	0.0
2009	87	77	1.20	0.0
2008	85	79	0.21	0.0
2007	86	77	0.07	0.0
2006	87	76	0.02	0.0
2005	87	76	0.31	0.0
2004	91	75	0.00	0.0
2003	87	77	0.02	0.0
2002	85	77	0.28	0.0
2001	83	77	0.01	0.0
2000	88	77	0.07	0.0
1999	86	75	0.12	0.0
1998	88	75	0.42	0.0
1997	86	78	0.11	0.0
1996	87	74	1.58	0.0
1995	86	74	0.34	0.0
1994	86	78	0.67	0.0
1993	90	76	0.02	0.0
1992	87	74	0.01	0.0
1991	89	74	0.05	0.0
1990	87	75	1.01	0.0
1989	91	75	0.01	0.0
1988	90	75	0.00	0.0
1987	90	79	0.00	0.0
1986	89	75	0.00	0.0
1985	90	79	0.08	0.0
1984	92	78	0.26	0.0
1983	90	76	0.12	0.0
1982	84	78	0.50	0.0
1981	85	76	2.35	0.0
1980	88	75	1.62	0.0
1979	89	77	0.08	0.0
1978	88	77	1.11	0.0
1977	87	77	0.69	0.0
1976	85	79	0.16	0.0
1975	83	78	0.41	0.0
1974	87	79	0.11	0.0
1973	85	78	0.14	0.0
1972	88	75	0.00	0.0
1971	89	81	0.08	0.0
1970	86	75	0.18	0.0
1969	91	77	0.16	0.0
1968	86	74	0.13	0.0
1967	85	77	0.23	0.0
1966	86	73	0.09	0.0
1965	86	74	0.23	0.0
1964	86	75	0.26	0.0
1963	84	75	0.21	0.0
1962	91	77	0.00	0.0
1961	83	74	2.23	0.0
1960	83	73	0.86	0.0
1959	83	75	0.42	0.0
1958	85	76	0.00	0.0
1957	88	78	0.04	0.0
1956	86	73	0.09	n/a
1955	86	74	0.52	n/a
1954	85	77	0.14	n/a
1953	82	75	1.16	n/a
1952	86	75	0.00	n/a
1951	89	78	0.00	n/a
1950	86	76	0.03	n/a
1949	84	74	0.21	n/a
1948	86	77	0.02	n/a
1947	89	76	0.33	n/a
1946	n/a	n/a	n/a	n/a
1945	86	77	0.03	n/a

What's the all-time high for Guam on 9/18?

For the date of Sep 18, the highest temperature ever reached in Guam history is 93 °F which happened in 2014.

Highest Temperatures in Guam on September 18

What's the all-time low for Guam on 9/18?

For the date of Sep 18, the lowest temperature ever reached in Guam history is 73 °F which has happened 3 times, most recently in 1966.

Lowest Temperatures in Guam on September 18

Lowest High Temperatures in Guam on September 18

What's the most it has ever rained in Guam on 9/18?

For the date of Sep 18, the most precipitation ever recorded in Guam history is 2.35 inches which happened in 1981.

All-Time Most Precipitation in Guam on September 18

Weather Station Details

Years	Station	Coordinates
1945–2024	Guam International Airport	location