Weather on December 28
San Ramon, CA
55 Years of Data
Avg High
54°F
Avg Low
40°F
Warmest
1980
57°F avg
Coldest
1988
27°F avg
About This Date
December 28th 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 28th was in 1980 (57°F average), while the coldest was 1988 (27°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 29% of December 28th dates historically, with the wettest December 28th recording 4.5" of rain. The last decade has been 4.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.2°F cooler on this date compared to 20-30 years ago.
Planning for December 28th in San Ramon, CA? Bring layers as temperatures can vary throughout the day.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 48° | 40° | 44° | 0.03" | — |
| 2024 | 57° | 48° | 53° | 0.03" | — |
| 2023 | 56° | 44° | 50° | 0.74" | — |
| 2022 | 47° | 39° | 43° | 0.03" | — |
| 2021 | 39° | 29° | 34° | 0.08" | — |
| 2020 | 51° | 38° | 44° | 0.18" | — |
| 2019 | 51° | 43° | 47° | — | — |
| 2018 | 49° | 37° | 43° | — | — |
| 2017 | 60° | 45° | 52° | — | — |
| 2016 | 54° | 42° | 48° | — | — |
| 2015 | 57° | 30° | 44° | 4.5" | — |
| 2014 | 52° | 37° | 44° | — | — |
| 2013 | 68° | 47° | 57° | — | — |
| 2012 | 47° | 34° | 40° | — | — |
| 2011 | 61° | 48° | 54° | — | — |
| 2010 | 52° | 42° | 47° | — | — |
| 2009 | 60° | 37° | 49° | — | — |
| 2008 | 50° | 36° | 43° | — | — |
| 2007 | 44° | 24° | 34° | 0.58" | — |
| 2006 | 55° | 42° | 49° | — | — |
| 2005 | 59° | 47° | 53° | — | — |
| 2004 | 50° | 44° | 47° | — | — |
| 2003 | 48° | 28° | 38° | — | — |
| 2002 | 53° | 42° | 48° | 0.23" | — |
| 2001 | 61° | 38° | 49° | 0.84" | — |
| 2000 | 69° | 41° | 55° | — | — |
| 1999 | 71° | 41° | 56° | — | — |
| 1998 | 55° | 36° | 45° | — | — |
| 1997 | 62° | 49° | 55° | — | — |
| 1996 | 58° | 50° | 54° | — | — |
| 1995 | 53° | 45° | 49° | — | — |
| 1994 | 54° | 38° | 46° | — | — |
| 1993 | 59° | 41° | 50° | — | — |
| 1992 | 51° | 45° | 48° | — | — |
| 1991 | 54° | 47° | 50° | — | — |
| 1990 | 50° | 34° | 42° | — | — |
| 1989 | 51° | 35° | 43° | — | — |
| 1988coldest | 31° | 23° | 27° | 0.43" | — |
| 1987 | 46° | 39° | 43° | 1.42" | — |
| 1986 | 54° | 34° | 44° | — | — |
| 1985 | 68° | 44° | 56° | — | — |
| 1984 | 51° | 34° | 42° | — | — |
| 1983 | 50° | 40° | 45° | — | — |
| 1982 | 54° | 36° | 45° | — | — |
| 1981 | 52° | 35° | 43° | — | — |
| 1980warmest | 68° | 47° | 57° | — | — |
| 1979 | 53° | 35° | 44° | — | — |
| 1978 | 47° | 40° | 43° | — | — |
| 1977 | 58° | 49° | 53° | 0.13" | — |
| 1976 | 68° | 44° | 56° | — | — |
| 1975 | 58° | 47° | 52° | — | — |
| 1974 | 39° | 31° | 35° | 1.88" | — |
| 1973 | 52° | 49° | 50° | 0.66" | — |
| 1972 | 61° | 41° | 51° | — | — |
| 1971 | 39° | 32° | 36° | 0.18" | — |
55 years of data from LIVERMORE CALIFORNIA