Weather on December 30
San Ramon, CA
55 Years of Data
About This Date
December 30th in San Ramon, CA typically brings cool winter weather, with average highs around 54°F and lows near 40°F. Over 55 years of records, the warmest December 30th was in 1996 (60°F average), while the coldest was 1988 (34°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 33% of December 30th dates historically, with the wettest December 30th recording 3.35" 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 30th in San Ramon, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 58° | 45° | 51° | — | — |
| 2024 | 53° | 41° | 47° | 0.03" | — |
| 2023 | 55° | 47° | 51° | 0.46" | — |
| 2022 | 52° | 42° | 47° | 1.17" | — |
| 2021 | 42° | 35° | 39° | 0.2" | — |
| 2020 | 55° | 44° | 50° | — | — |
| 2019 | 51° | 39° | 45° | — | — |
| 2018 | 56° | 40° | 48° | — | — |
| 2017 | 72° | 45° | 58° | — | — |
| 2016 | 60° | 47° | 53° | — | — |
| 2015 | 57° | 30° | 44° | — | — |
| 2014 | 46° | 32° | 39° | — | — |
| 2013 | 64° | 51° | 58° | — | — |
| 2012 | 46° | 36° | 41° | — | — |
| 2011 | 64° | 46° | 55° | 0.03" | — |
| 2010 | 41° | 29° | 35° | 0.03" | — |
| 2009 | 60° | 37° | 49° | 0.18" | — |
| 2008 | 57° | 41° | 49° | — | — |
| 2007 | 47° | 32° | 39° | 0.13" | — |
| 2006 | 58° | 35° | 46° | — | — |
| 2005 | 60° | 48° | 54° | — | — |
| 2004 | 55° | 47° | 51° | — | — |
| 2003 | 45° | 34° | 39° | 3.35" | — |
| 2002 | 48° | 35° | 42° | — | — |
| 2001 | 53° | 43° | 48° | 0.81" | — |
| 2000 | 64° | 37° | 51° | — | — |
| 1999 | 62° | 40° | 51° | — | — |
| 1998 | 59° | 38° | 48° | — | — |
| 1997 | 62° | 44° | 53° | — | — |
| 1996warmest | 63° | 57° | 60° | — | — |
| 1995 | 59° | 56° | 57° | — | — |
| 1994 | 50° | 32° | 41° | — | — |
| 1993 | 62° | 41° | 52° | — | — |
| 1992 | 51° | 38° | 44° | — | — |
| 1991 | 52° | 45° | 48° | — | — |
| 1990 | 48° | 30° | 39° | — | — |
| 1989 | 59° | 39° | 49° | — | — |
| 1988coldest | 44° | 24° | 34° | — | — |
| 1987 | 43° | 30° | 36° | 0.13" | — |
| 1986 | 61° | 37° | 49° | — | — |
| 1985 | 52° | 43° | 47° | 2.36" | — |
| 1984 | 49° | 33° | 41° | — | — |
| 1983 | 59° | 50° | 55° | 0.33" | — |
| 1982 | 47° | 36° | 41° | — | — |
| 1981 | 51° | 45° | 48° | 3.35" | — |
| 1980 | 67° | 51° | 59° | — | — |
| 1979 | 58° | 46° | 52° | 0.66" | — |
| 1978 | 52° | 32° | 42° | — | — |
| 1977 | 51° | 41° | 46° | 0.41" | — |
| 1976 | 53° | 41° | 47° | 2.24" | — |
| 1975 | 66° | 50° | 58° | — | — |
| 1974 | 46° | 30° | 38° | — | — |
| 1973 | 52° | 36° | 44° | 0.05" | — |
| 1972 | 52° | 42° | 47° | — | — |
| 1971 | 46° | 33° | 40° | — | — |