Weather on December 9
San Leandro, CA
55 Years of Data
Avg High
57°F
Avg Low
44°F
Warmest
1988
59°F avg
Coldest
1972
28°F avg
About This Date
December 9th in San Leandro, CA typically brings cool winter weather, with average highs around 57°F and lows near 44°F. Over 53 years of records, the warmest December 9th was in 1988 (59°F average), while the coldest was 1972 (28°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 9% of December 9th dates historically, with the wettest December 9th recording 1.47" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 9th in San Leandro, CA? Bring layers as temperatures can vary throughout the day.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 47° | 39° | 43° | — | — |
| 2024 | 57° | 47° | 52° | — | — |
| 2023 | 53° | 44° | 49° | — | — |
| 2022 | 50° | 41° | 46° | — | — |
| 2021 | 53° | 42° | 48° | — | — |
| 2020 | 59° | 48° | 54° | — | — |
| 2019 | 52° | 47° | 49° | — | — |
| 2018 | 49° | 40° | 44° | — | — |
| 2017 | 58° | 52° | 55° | — | — |
| 2016 | 57° | 53° | 55° | — | — |
| 2015 | 60° | 53° | 57° | — | — |
| 2014 | 61° | 53° | 57° | — | — |
| 2013 | 43° | 31° | 37° | — | — |
| 2012 | 61° | 49° | 55° | — | — |
| 2011 | 55° | 42° | 49° | — | — |
| 2010 | 59° | 53° | 56° | — | — |
| 2009 | 40° | 30° | 35° | — | — |
| 2008 | 59° | 39° | 49° | — | — |
| 2007 | 57° | 38° | 47° | — | — |
| 2006 | 64° | 53° | 59° | 0.84" | — |
| 2005 | 63° | 48° | 55° | — | — |
| 2004 | 63° | 53° | 58° | — | — |
| 2003 | 52° | 45° | 48° | — | — |
| 2002 | 54° | 47° | 50° | — | — |
| 2001 | 52° | 42° | 47° | — | — |
| 2000 | 54° | 49° | 51° | — | — |
| 1999 | 51° | 40° | 45° | — | — |
| 1998 | 54° | 43° | 48° | — | — |
| 1997 | 54° | 40° | 47° | — | — |
| 1996 | 56° | 52° | 54° | — | — |
| 1995 | 51° | 47° | 49° | — | — |
| 1994 | 62° | 51° | 57° | — | — |
| 1993 | 58° | 50° | 54° | — | — |
| 1992 | 56° | 52° | 54° | — | — |
| 1989 | 61° | 44° | 52° | — | — |
| 1988warmest | 70° | 48° | 59° | — | — |
| 1987 | 56° | 48° | 52° | 1.09" | — |
| 1986 | 61° | 41° | 51° | — | — |
| 1985 | 56° | 38° | 47° | — | — |
| 1984 | 66° | 48° | 57° | — | — |
| 1983 | 62° | 53° | 58° | 1.47" | — |
| 1982 | 60° | 45° | 52° | — | — |
| 1981 | 66° | 46° | 56° | — | — |
| 1980 | 58° | 39° | 48° | — | — |
| 1979 | 64° | 49° | 56° | — | — |
| 1978 | 52° | 32° | 42° | — | — |
| 1977 | 59° | 42° | 51° | — | — |
| 1976 | 66° | 44° | 55° | 0.05" | — |
| 1975 | 65° | 39° | 52° | — | — |
| 1974 | 54° | 39° | 46° | — | — |
| 1973 | 63° | 40° | 51° | — | — |
| 1972coldest | 38° | 18° | 28° | — | — |
| 1971 | 56° | 36° | 46° | 0.13" | — |
53 years of data from UPPER SAN LEANDRO FILTERS