Guam September 30 Weather Records

Daily averages and all-time records for weather in Guam for the date of September 30.

September 30 All-Time Records
1945–2024

93 °F

72 °F

79 °F

Highest daily low

80 °F

3.31 inches

Most snow

none

September 30 Average Weather
1991–2020 ¹

Average high

87.2 °F

Average low

76.5 °F

Chance precipitation

84.0%

Chance snow

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2023	88	77	0.63	0.0
2022	87	78	0.44	0.0
2021	90	78	0.50	0.0
2020	88	76	0.82	0.0
2019	86	72	2.10	0.0
2018	88	78	0.38	0.0
2017	88	76	1.10	0.0
2016	87	77	1.44	0.0
2015	88	77	0.22	0.0
2014	86	77	0.08	0.0
2013	86	76	0.00	0.0
2012	89	77	0.92	0.0
2011	84	75	1.49	0.0
2010	83	76	0.41	0.0
2009	85	78	2.15	0.0
2008	86	76	0.35	0.0
2007	86	76	0.30	0.0
2006	88	77	0.70	0.0
2005	87	76	0.17	0.0
2004	88	78	0.01	0.0
2003	87	80	0.00	0.0
2002	87	76	0.02	0.0
2001	88	78	0.04	0.0
2000	89	76	0.66	0.0
1999	87	76	0.05	0.0
1998	85	76	0.27	0.0
1997	90	76	0.00	0.0
1996	87	77	0.13	0.0
1995	89	74	0.21	0.0
1994	87	75	0.16	0.0
1993	86	74	0.61	0.0
1992	91	75	0.07	0.0
1991	86	75	0.73	0.0
1990	88	79	0.00	0.0
1989	90	74	0.00	0.0
1988	88	75	0.94	0.0
1987	91	79	0.03	0.0
1986	90	79	0.00	0.0
1985	88	75	0.00	0.0
1984	89	78	0.12	0.0
1983	91	80	0.00	0.0
1982	90	78	0.09	0.0
1981	93	77	0.03	0.0
1980	81	73	2.70	0.0
1979	90	74	0.73	0.0
1978	89	78	0.06	0.0
1977	88	80	0.00	0.0
1976	89	78	0.14	0.0
1975	85	72	n/a	0.0
1974	87	80	0.00	0.0
1973	87	77	0.40	0.0
1972	87	75	0.01	0.0
1971	91	80	0.47	0.0
1970	83	79	0.31	0.0
1969	89	77	0.05	0.0
1968	86	75	0.01	0.0
1967	88	75	0.02	0.0
1966	87	74	0.50	0.0
1965	79	73	1.45	0.0
1964	91	77	0.07	0.0
1963	85	76	0.29	0.0
1962	88	74	3.31	0.0
1961	87	78	0.00	0.0
1960	86	77	0.60	0.0
1959	83	77	0.91	0.0
1958	87	76	0.22	0.0
1957	85	78	0.84	0.0
1956	87	76	1.10	n/a
1955	84	77	0.01	n/a
1954	84	76	0.02	n/a
1953	87	77	0.00	n/a
1952	86	73	1.25	n/a
1951	88	79	0.00	n/a
1950	88	75	0.02	n/a
1949	82	72	1.10	n/a
1948	85	77	0.03	n/a
1947	86	75	1.63	n/a
1946	n/a	n/a	n/a	n/a
1945	86	74	0.00	n/a

What's the all-time high for Guam on 9/30?

For the date of Sep 30, the highest temperature ever reached in Guam history is 93 °F which happened in 1981.

Highest Temperatures in Guam on September 30

What's the all-time low for Guam on 9/30?

For the date of Sep 30, the lowest temperature ever reached in Guam history is 72 °F which has happened 3 times, most recently in 2019.

Lowest Temperatures in Guam on September 30

Lowest High Temperatures in Guam on September 30

What's the most it has ever rained in Guam on 9/30?

For the date of Sep 30, the most precipitation ever recorded in Guam history is 3.31 inches which happened in 1962.

All-Time Most Precipitation in Guam on September 30

Weather Station Details

Years	Station	Coordinates
1945–2024	Guam International Airport	location