Guam March 21 Weather Records

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

March 21 All-Time Records
1945–2024

90 °F

70 °F

81 °F

Highest daily low

79 °F

0.81 inches

Most snow

none

March 21 Average Weather
1991–2020 ¹

Average high

87.2 °F

Average low

75.7 °F

Chance precipitation

57.4%

Chance snow

Year	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
2024	86	70	0.00	0.0
2023	86	75	0.05	0.0
2022	88	78	0.00	0.0
2021	86	77	0.00	0.0
2020	87	77	0.04	0.0
2019	89	75	0.00	0.0
2018	90	78	0.00	0.0
2017	87	76	0.60	0.0
2016	88	74	0.00	0.0
2015	85	75	0.06	0.0
2014	86	77	0.01	0.0
2013	90	78	0.04	0.0
2012	88	77	0.03	0.0
2011	88	78	0.00	0.0
2010	87	78	0.03	0.0
2009	86	73	0.01	0.0
2008	86	73	0.00	0.0
2007	89	76	0.00	0.0
2006	87	76	0.03	0.0
2005	87	75	0.00	0.0
2004	87	79	0.00	0.0
2003	87	77	0.01	0.0
2002	84	75	0.56	0.0
2001	88	75	0.00	0.0
2000	88	76	0.00	0.0
1999	87	76	0.00	0.0
1998	85	73	0.00	0.0
1997	86	72	0.00	0.0
1996	87	73	0.81	0.0
1995	85	73	0.13	0.0
1994	90	75	0.00	0.0
1993	84	73	0.00	0.0
1992	88	74	0.06	0.0
1991	84	75	0.07	0.0
1990	88	76	0.09	0.0
1989	84	76	0.00	0.0
1988	88	74	0.01	0.0
1987	89	76	0.00	0.0
1986	89	77	0.00	0.0
1985	88	77	0.00	0.0
1984	90	74	0.00	0.0
1983	87	75	0.00	0.0
1982	89	74	0.13	0.0
1981	88	74	0.00	0.0
1980	84	73	0.30	0.0
1979	86	77	0.00	0.0
1978	87	76	0.00	0.0
1977	84	75	0.18	0.0
1976	85	74	0.00	0.0
1975	85	74	0.68	0.0
1974	81	75	0.00	0.0
1973	83	74	0.10	0.0
1972	86	78	0.02	0.0
1971	90	76	0.03	0.0
1970	87	77	0.06	0.0
1969	89	74	0.00	0.0
1968	85	76	0.07	0.0
1967	83	75	0.22	0.0
1966	87	75	0.00	0.0
1965	87	72	0.00	0.0
1964	85	72	0.02	0.0
1963	89	74	0.00	0.0
1962	84	76	0.00	0.0
1961	85	77	0.00	0.0
1960	83	74	0.07	0.0
1959	86	75	0.01	0.0
1958	83	77	0.00	0.0
1957	85	75	0.00	0.0
1956	84	75	0.11	n/a
1955	85	74	0.55	n/a
1954	85	74	0.00	n/a
1953	85	75	0.00	n/a
1952	85	74	0.00	n/a
1951	84	73	0.01	n/a
1950	85	73	0.00	n/a
1949	84	74	0.00	n/a
1948	86	75	0.00	n/a
1947	n/a	n/a	n/a	n/a
1946	n/a	n/a	n/a	n/a

What's the all-time high for Guam on 3/21?

For the date of Mar 21, the highest temperature ever reached in Guam history is 90 °F which has happened 5 times, most recently in 2018.

Highest Temperatures in Guam on March 21

What's the all-time low for Guam on 3/21?

For the date of Mar 21, the lowest temperature ever reached in Guam history is 70 °F which happened in 2024.

Lowest Temperatures in Guam on March 21

Lowest High Temperatures in Guam on March 21

What's the most it has ever rained in Guam on 3/21?

For the date of Mar 21, the most precipitation ever recorded in Guam history is 0.81 inches which happened in 1996.

All-Time Most Precipitation in Guam on March 21

Weather Station Details

Years	Station	Coordinates
1945–2024	Guam International Airport	location