Weather on December 31
San Leandro, CA
55 Years of Data
Avg High
55°F
Avg Low
42°F
Warmest
1995
61°F avg
Coldest
2010
39°F avg
About This Date
December 31st in San Leandro, CA typically brings cool winter weather, with average highs around 55°F and lows near 42°F. Over 53 years of records, the warmest December 31st was in 1995 (61°F average), while the coldest was 2010 (39°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 13% of December 31st dates historically, with the wettest December 31st recording 2.72" of rain. The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.
Planning for December 31st in San Leandro, CA? Bring layers as temperatures can vary throughout the day.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 49° | 45° | 47° | — | — |
| 2024 | 52° | 43° | 47° | — | — |
| 2023 | 61° | 48° | 54° | — | — |
| 2022 | 55° | 46° | 51° | — | — |
| 2021 | 48° | 37° | 43° | — | — |
| 2020 | 54° | 42° | 48° | — | — |
| 2019 | 59° | 47° | 53° | — | — |
| 2018 | 50° | 41° | 46° | — | — |
| 2017 | 56° | 49° | 52° | — | — |
| 2016 | 48° | 39° | 44° | — | — |
| 2015 | 44° | 36° | 40° | — | — |
| 2014 | 52° | 36° | 44° | — | — |
| 2013 | 58° | 47° | 52° | — | — |
| 2012 | 49° | 37° | 43° | — | — |
| 2011 | 62° | 41° | 52° | — | — |
| 2010coldest | 43° | 35° | 39° | — | — |
| 2009 | 57° | 43° | 50° | — | — |
| 2008 | 52° | 37° | 44° | — | — |
| 2007 | 49° | 39° | 44° | — | — |
| 2006 | 53° | 40° | 46° | — | — |
| 2005 | 58° | 48° | 53° | — | — |
| 2004 | 52° | 43° | 47° | — | — |
| 2003 | 53° | 42° | 48° | — | — |
| 2002 | 51° | 44° | 48° | — | — |
| 2001 | 61° | 52° | 56° | — | — |
| 2000 | 61° | 43° | 52° | — | — |
| 1999 | 47° | 43° | 45° | — | — |
| 1998 | 59° | 47° | 53° | — | — |
| 1997 | 59° | 49° | 54° | — | — |
| 1996 | 62° | 58° | 60° | — | — |
| 1995warmest | 67° | 56° | 61° | — | — |
| 1994 | 56° | 52° | 54° | — | — |
| 1993 | 55° | 47° | 51° | — | — |
| 1992 | 51° | 45° | 48° | — | — |
| 1989 | 67° | 41° | 54° | — | — |
| 1988 | 50° | 36° | 43° | 1.24" | — |
| 1987 | 53° | 36° | 44° | — | — |
| 1986 | 63° | 40° | 51° | 0.05" | — |
| 1985 | 56° | 49° | 52° | — | — |
| 1984 | 54° | 36° | 45° | — | — |
| 1983 | 59° | 50° | 55° | 0.41" | — |
| 1982 | 55° | 36° | 45° | — | — |
| 1981 | 55° | 49° | 52° | 0.13" | — |
| 1980 | 56° | 38° | 47° | — | — |
| 1979 | 59° | 43° | 51° | 1.5" | — |
| 1978 | 49° | 32° | 40° | — | — |
| 1977 | 59° | 42° | 51° | 0.08" | — |
| 1976 | 57° | 43° | 50° | 2.72" | — |
| 1975 | 54° | 37° | 45° | — | — |
| 1974 | 50° | 43° | 46° | — | — |
| 1973 | 58° | 34° | 46° | — | — |
| 1972 | 57° | 34° | 45° | — | — |
| 1971 | 52° | 35° | 43° | — | — |
53 years of data from UPPER SAN LEANDRO FILTERS