Weather on December 19
San Ramon, CA
55 Years of Data
Avg High
55°F
Avg Low
40°F
Warmest
1976
59°F avg
Coldest
1978
37°F avg
About This Date
December 19th in San Ramon, CA typically brings cool winter weather, with average highs around 55°F and lows near 40°F. Over 54 years of records, the warmest December 19th was in 1976 (59°F average), while the coldest was 1978 (37°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 28% of December 19th dates historically, with the wettest December 19th recording 3.84" of rain. The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
Planning for December 19th in San Ramon, CA? Bring layers as temperatures can vary throughout the day.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 62° | 48° | 55° | 0.13" | — |
| 2024 | 56° | 39° | 47° | — | — |
| 2023 | 56° | 45° | 50° | 1.8" | — |
| 2022 | 53° | 39° | 46° | — | — |
| 2021 | 46° | 38° | 42° | — | — |
| 2020 | 53° | 42° | 48° | — | — |
| 2019 | 47° | 43° | 45° | 0.76" | — |
| 2018 | 54° | 47° | 50° | — | — |
| 2017 | 59° | 48° | 54° | — | — |
| 2016 | 47° | 34° | 40° | — | — |
| 2015 | 50° | 40° | 45° | 0.74" | — |
| 2014 | 52° | 46° | 49° | 0.23" | — |
| 2013 | 63° | 35° | 49° | — | — |
| 2012 | 44° | 31° | 37° | — | — |
| 2011 | 59° | 42° | 51° | — | — |
| 2010 | 50° | 46° | 48° | 3.84" | — |
| 2009 | 62° | 46° | 54° | 0.08" | — |
| 2008 | 46° | 38° | 42° | 0.51" | — |
| 2007 | 78° | 30° | 54° | 1.4" | — |
| 2006 | 58° | 33° | 45° | — | — |
| 2005 | 60° | 48° | 54° | — | — |
| 2004 | 64° | 34° | 49° | — | — |
| 2003 | 64° | 46° | 55° | — | — |
| 2002 | 49° | 32° | 40° | — | — |
| 2001 | 52° | 31° | 41° | 1.04" | — |
| 2000 | 62° | 39° | 51° | — | — |
| 1999 | 65° | 49° | 57° | — | — |
| 1998 | 50° | 38° | 44° | — | — |
| 1997 | 57° | 44° | 51° | — | — |
| 1996 | 57° | 37° | 47° | — | — |
| 1995 | 58° | 43° | 50° | — | — |
| 1994 | 48° | 39° | 44° | — | — |
| 1993 | 55° | 34° | 44° | — | — |
| 1992 | 50° | 35° | 43° | — | — |
| 1991 | 52° | 35° | 43° | — | — |
| 1990 | 45° | 33° | 39° | — | — |
| 1989 | 52° | 34° | 43° | — | — |
| 1988 | 52° | 34° | 43° | 0.15" | — |
| 1987 | 53° | 39° | 46° | — | — |
| 1985 | 72° | 47° | 59° | — | — |
| 1984 | 47° | 35° | 41° | — | — |
| 1983 | 53° | 41° | 47° | — | — |
| 1982 | 58° | 39° | 48° | — | — |
| 1981 | 56° | 48° | 52° | 1.02" | — |
| 1980 | 56° | 38° | 47° | — | — |
| 1979 | 60° | 43° | 51° | 1.07" | — |
| 1978coldest | 41° | 33° | 37° | 0.05" | — |
| 1977 | 49° | 33° | 41° | — | — |
| 1976warmest | 69° | 49° | 59° | — | — |
| 1975 | 65° | 45° | 55° | — | — |
| 1974 | 57° | 43° | 50° | — | — |
| 1973 | 55° | 50° | 53° | — | — |
| 1972 | 58° | 46° | 52° | 0.74" | — |
| 1971 | 58° | 40° | 49° | — | — |
54 years of data from LIVERMORE CALIFORNIA