Guam December 20 Weather Records

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

December 20 All-Time Records
1945–2024

90 °F

71 °F

80 °F

Highest daily low

80 °F

1.22 inches

Most snow

none

December 20 Average Weather
1991–2020 ¹

Average high

86.6 °F

Average low

76.6 °F

Chance precipitation

70.0%

Chance snow

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2023	87	76	0.00	0.0
2022	87	75	0.03	0.0
2021	85	76	0.01	0.0
2020	88	77	0.09	0.0
2019	87	77	0.03	0.0
2018	87	78	0.95	0.0
2017	89	79	0.01	0.0
2016	88	77	0.04	0.0
2015	89	75	0.06	0.0
2014	90	80	0.00	0.0
2013	85	78	0.00	0.0
2012	89	79	0.03	0.0
2011	88	77	0.01	0.0
2010	89	77	0.06	0.0
2009	87	76	0.00	0.0
2008	87	76	0.10	0.0
2007	88	77	0.06	0.0
2006	86	75	0.27	0.0
2005	87	74	0.10	0.0
2004	86	77	0.09	0.0
2003	86	74	0.00	0.0
2002	87	78	0.00	0.0
2001	87	75	0.18	0.0
2000	87	76	0.08	0.0
1999	87	78	0.00	0.0
1998	87	79	0.00	0.0
1997	85	75	0.14	0.0
1996	86	79	0.00	0.0
1995	89	78	0.15	0.0
1994	86	76	0.04	0.0
1993	86	75	0.18	0.0
1992	82	73	0.15	0.0
1991	87	75	0.00	0.0
1990	80	75	1.22	0.0
1989	86	74	0.00	0.0
1988	90	79	0.05	0.0
1987	87	75	0.00	0.0
1986	87	79	0.03	0.0
1985	88	76	0.06	0.0
1984	88	75	0.00	0.0
1983	89	77	0.00	0.0
1982	86	75	0.38	0.0
1981	86	79	0.00	0.0
1980	86	77	0.22	0.0
1979	81	76	0.24	0.0
1978	84	75	0.00	0.0
1977	84	76	0.00	0.0
1976	84	76	0.91	0.0
1975	84	78	0.11	0.0
1974	85	79	0.02	0.0
1973	85	78	0.00	0.0
1972	87	76	0.00	0.0
1971	88	78	0.01	0.0
1970	85	76	0.00	0.0
1969	85	79	0.00	0.0
1968	87	76	0.05	0.0
1967	86	74	0.00	0.0
1966	85	76	0.01	0.0
1965	88	75	0.00	0.0
1964	87	76	0.02	0.0
1963	85	71	0.00	0.0
1962	88	79	0.00	0.0
1961	82	76	0.11	0.0
1960	85	78	0.07	0.0
1959	83	75	0.34	0.0
1958	84	77	0.00	0.0
1957	86	76	0.01	0.0
1956	84	75	0.13	n/a
1955	84	74	0.05	n/a
1954	86	76	0.00	n/a
1953	86	75	0.03	n/a
1952	84	75	0.08	n/a
1951	86	76	0.02	n/a
1950	84	76	0.14	n/a
1949	86	76	0.02	n/a
1948	84	76	0.12	n/a
1947	86	77	0.00	n/a
1946	n/a	n/a	n/a	n/a
1945	85	75	0.08	n/a

What's the all-time high for Guam on 12/20?

For the date of Dec 20, the highest temperature ever reached in Guam history is 90 °F which has happened 2 times, most recently in 2014.

Highest Temperatures in Guam on December 20

What's the all-time low for Guam on 12/20?

For the date of Dec 20, the lowest temperature ever reached in Guam history is 71 °F which happened in 1963.

Lowest Temperatures in Guam on December 20

Lowest High Temperatures in Guam on December 20

What's the most it has ever rained in Guam on 12/20?

For the date of Dec 20, the most precipitation ever recorded in Guam history is 1.22 inches which happened in 1990.

All-Time Most Precipitation in Guam on December 20

Weather Station Details

Years	Station	Coordinates
1945–2024	Guam International Airport	location