Guam August 20 Weather Records

Daily averages and all-time records for weather in Guam for the date of August 20.

August 20 All-Time Records
1945–2024

92 °F

71 °F

80 °F

Highest daily low

80 °F

4.17 inches

Most snow

none

August 20 Average Weather
1991–2020 ¹

Average high

87.2 °F

Average low

76.4 °F

Chance precipitation

82.3%

Chance snow

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2023	87	78	0.08	0.0
2022	85	74	0.12	0.0
2021	88	78	0.00	0.0
2020	86	78	0.05	0.0
2019	87	75	0.07	0.0
2018	82	76	1.80	0.0
2017	86	77	0.42	0.0
2016	90	79	0.10	0.0
2015	86	76	0.27	0.0
2014	88	75	1.01	0.0
2013	89	79	0.04	0.0
2012	87	76	1.03	0.0
2011	85	76	0.29	0.0
2010	86	76	0.31	0.0
2009	88	77	0.49	0.0
2008	87	77	0.00	0.0
2007	85	75	0.39	0.0
2006	84	75	0.03	0.0
2005	88	77	0.08	0.0
2004	87	78	0.27	0.0
2003	88	78	0.00	0.0
2002	87	75	1.15	0.0
2001	87	76	0.08	0.0
2000	87	80	0.05	0.0
1999	86	76	0.06	0.0
1998	87	75	0.27	0.0
1997	87	76	1.52	0.0
1996	85	75	4.17	0.0
1995	88	74	1.25	0.0
1994	87	78	1.06	0.0
1993	90	78	0.00	0.0
1992	90	75	0.70	0.0
1991	87	74	2.12	0.0
1990	89	75	0.43	0.0
1989	90	76	0.00	0.0
1988	89	74	0.02	0.0
1987	91	79	0.12	0.0
1986	89	79	0.06	0.0
1985	85	74	0.49	0.0
1984	90	77	0.07	0.0
1983	91	75	0.90	0.0
1982	83	76	0.33	0.0
1981	92	79	0.00	0.0
1980	89	75	0.71	0.0
1979	89	77	0.00	0.0
1978	88	77	0.01	0.0
1977	89	80	0.06	0.0
1976	87	77	0.10	0.0
1975	85	77	0.01	0.0
1974	83	75	0.04	0.0
1973	85	78	0.04	0.0
1972	84	75	0.04	0.0
1971	90	79	0.26	0.0
1970	86	74	0.34	0.0
1969	89	78	0.10	0.0
1968	88	75	0.00	0.0
1967	88	76	0.19	0.0
1966	90	77	0.47	0.0
1965	89	77	0.35	0.0
1964	82	73	0.09	0.0
1963	88	76	0.00	0.0
1962	89	76	0.60	n/a
1961	82	74	0.60	0.0
1960	80	71	0.91	0.0
1959	88	76	0.03	0.0
1958	84	74	1.18	0.0
1957	88	76	0.01	0.0
1956	87	78	0.06	n/a
1955	86	77	0.11	n/a
1954	82	72	1.84	n/a
1953	87	76	0.00	n/a
1952	87	75	0.21	n/a
1951	86	75	0.06	n/a
1950	87	74	0.15	n/a
1949	87	76	0.21	n/a
1948	88	76	0.21	n/a
1947	90	78	0.48	n/a
1946	n/a	n/a	n/a	n/a

What's the all-time high for Guam on 8/20?

For the date of Aug 20, the highest temperature ever reached in Guam history is 92 °F which happened in 1981.

Highest Temperatures in Guam on August 20

What's the all-time low for Guam on 8/20?

For the date of Aug 20, the lowest temperature ever reached in Guam history is 71 °F which happened in 1960.

Lowest Temperatures in Guam on August 20

Lowest High Temperatures in Guam on August 20

What's the most it has ever rained in Guam on 8/20?

For the date of Aug 20, the most precipitation ever recorded in Guam history is 4.17 inches which happened in 1996.

All-Time Most Precipitation in Guam on August 20

Weather Station Details

Years	Station	Coordinates
1945–2024	Guam International Airport	location