Guam May 21 Weather Records

Daily averages and all-time records for weather in Guam for the date of May 21.

May 21 All-Time Records
1945–2024

92 °F

74 °F

79 °F

Highest daily low

82 °F

18.49 inches

Most snow

none

May 21 Average Weather
1991–2020 ¹

Average high

88.7 °F

Average low

77.8 °F

Chance precipitation

62.5%

Chance snow

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2023	89	76	0.00	0.0
2022	87	77	0.14	0.0
2021	87	78	0.09	0.0
2020	90	82	0.00	0.0
2019	91	79	0.07	0.0
2018	89	79	0.00	0.0
2017	89	79	0.00	0.0
2016	90	82	0.00	0.0
2015	88	78	0.00	0.0
2014	90	81	0.00	0.0
2013	92	80	0.00	0.0
2012	82	78	0.42	0.0
2011	88	78	0.12	0.0
2010	90	79	0.00	0.0
2009	91	77	0.04	0.0
2008	86	78	0.19	0.0
2007	88	79	0.00	0.0
2006	89	79	0.01	0.0
2005	87	77	0.00	0.0
2004	90	76	0.00	0.0
2003	89	76	0.01	0.0
2002	88	77	0.00	0.0
2001	89	76	0.71	0.0
2000	88	79	0.02	0.0
1999	89	80	0.01	0.0
1998	88	76	0.00	0.0
1997	86	75	0.18	0.0
1996	89	77	0.06	0.0
1995	88	78	0.00	0.0
1994	88	78	0.18	0.0
1993	90	75	0.12	0.0
1992	90	74	0.00	0.0
1991	88	74	0.03	0.0
1990	90	78	0.08	0.0
1989	90	79	0.00	0.0
1988	91	79	0.00	0.0
1987	90	74	0.00	0.0
1986	88	78	0.07	0.0
1985	85	75	0.47	0.0
1984	90	80	0.01	0.0
1983	90	78	0.00	0.0
1982	88	78	0.00	0.0
1981	90	80	0.00	0.0
1980	88	78	0.58	0.0
1979	88	76	0.00	0.0
1978	89	79	0.04	0.0
1977	87	78	0.00	0.0
1976	79	77	18.49	0.0
1975	84	80	0.05	0.0
1974	82	77	0.39	0.0
1973	86	77	0.00	0.0
1972	87	75	0.21	0.0
1971	92	78	0.00	0.0
1970	89	75	0.20	0.0
1969	88	76	0.00	0.0
1968	88	77	0.00	0.0
1967	87	77	0.03	0.0
1966	89	75	0.00	0.0
1965	84	75	0.00	0.0
1964	86	76	0.10	0.0
1963	87	76	0.54	0.0
1962	85	78	0.17	0.0
1961	85	77	0.03	0.0
1960	85	77	0.29	0.0
1959	87	76	0.00	0.0
1958	85	75	0.08	0.0
1957	87	78	0.00	0.0
1956	85	76	0.00	n/a
1955	85	78	0.00	n/a
1954	87	75	0.04	n/a
1953	88	76	0.00	n/a
1952	85	79	0.00	n/a
1951	86	74	0.01	n/a
1950	87	78	0.00	n/a
1949	86	77	0.00	n/a
1948	87	76	0.05	n/a
1947	80	77	2.54	n/a
1946	n/a	n/a	n/a	n/a

What's the all-time high for Guam on 5/21?

For the date of May 21, the highest temperature ever reached in Guam history is 92 °F which has happened 2 times, most recently in 2013.

Highest Temperatures in Guam on May 21

What's the all-time low for Guam on 5/21?

For the date of May 21, the lowest temperature ever reached in Guam history is 74 °F which has happened 4 times, most recently in 1992.

Lowest Temperatures in Guam on May 21

Lowest High Temperatures in Guam on May 21

What's the most it has ever rained in Guam on 5/21?

For the date of May 21, the most precipitation ever recorded in Guam history is 18.49 inches which happened in 1976.

All-Time Most Precipitation in Guam on May 21

Weather Station Details

Years	Station	Coordinates
1945–2024	Guam International Airport	location