Weather on December 17
San Leandro, CA
55 Years of Data
Avg High
56°F
Avg Low
44°F
Warmest
1998
62°F avg
Coldest
1993
41°F avg
About This Date
December 17th in San Leandro, CA typically brings cool winter weather, with average highs around 56°F and lows near 44°F. Over 53 years of records, the warmest December 17th was in 1998 (62°F average), while the coldest was 1993 (41°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 13% of December 17th dates historically, with the wettest December 17th recording 1.96" of rain. The last decade has been 4.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.9°F cooler on this date compared to 20-30 years ago.
Planning for December 17th in San Leandro, CA? Bring layers as temperatures can vary throughout the day.
Cooling Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 58° | 49° | 53° | — | — |
| 2024 | 53° | 44° | 49° | — | — |
| 2023 | 55° | 46° | 51° | — | — |
| 2022 | 50° | 40° | 45° | — | — |
| 2021 | 48° | 39° | 44° | — | — |
| 2020 | 52° | 45° | 48° | — | — |
| 2019 | 47° | 38° | 42° | — | — |
| 2018 | 56° | 47° | 51° | — | — |
| 2017 | 56° | 46° | 51° | — | — |
| 2016 | 47° | 36° | 41° | — | — |
| 2015 | 53° | 43° | 48° | — | — |
| 2014 | 53° | 46° | 50° | — | — |
| 2013 | 59° | 49° | 54° | — | — |
| 2012 | 51° | 42° | 47° | — | — |
| 2011 | 57° | 40° | 48° | — | — |
| 2010 | 50° | 41° | 46° | — | — |
| 2009 | 57° | 46° | 52° | — | — |
| 2008 | 51° | 34° | 42° | — | — |
| 2007 | 51° | 43° | 47° | — | — |
| 2006 | 54° | 35° | 44° | — | — |
| 2005 | 46° | 38° | 42° | — | — |
| 2004 | 59° | 49° | 54° | — | — |
| 2003 | 55° | 44° | 50° | — | — |
| 2002 | 52° | 41° | 46° | — | — |
| 2001 | 52° | 46° | 49° | — | — |
| 2000 | 61° | 45° | 53° | — | — |
| 1999 | 65° | 47° | 56° | — | — |
| 1998warmest | 66° | 58° | 62° | — | — |
| 1997 | 58° | 44° | 51° | — | — |
| 1996 | 62° | 60° | 61° | — | — |
| 1995 | 63° | 56° | 59° | — | — |
| 1994 | 60° | 55° | 58° | — | — |
| 1993coldest | 44° | 38° | 41° | — | — |
| 1992 | 47° | 37° | 42° | — | — |
| 1989 | 64° | 39° | 52° | — | — |
| 1988 | 59° | 44° | 52° | — | — |
| 1987 | 51° | 39° | 45° | 0.61" | — |
| 1986 | 66° | 44° | 55° | — | — |
| 1985 | 61° | 40° | 50° | — | — |
| 1984 | 54° | 35° | 44° | — | — |
| 1983 | 56° | 52° | 54° | 0.36" | — |
| 1982 | 66° | 52° | 59° | 0.58" | — |
| 1981 | 63° | 46° | 54° | — | — |
| 1980 | 72° | 46° | 59° | — | — |
| 1979 | 66° | 45° | 55° | — | — |
| 1978 | 61° | 43° | 52° | 0.36" | — |
| 1977 | 59° | 44° | 52° | 1.96" | — |
| 1976 | 70° | 48° | 59° | — | — |
| 1975 | 55° | 35° | 45° | — | — |
| 1974 | 60° | 42° | 51° | — | — |
| 1973 | 61° | 39° | 50° | 0.56" | — |
| 1972 | 50° | 33° | 42° | 1.35" | — |
| 1971 | 51° | 33° | 42° | — | — |
53 years of data from UPPER SAN LEANDRO FILTERS