Weather on December 22
San Ramon, CA
55 Years of Data
Avg High
53°F
Avg Low
40°F
Warmest
2005
62°F avg
Coldest
1990
24°F avg
About This Date
December 22nd in San Ramon, CA typically brings cool winter weather, with average highs around 53°F and lows near 40°F. Over 54 years of records, the warmest December 22nd was in 2005 (62°F average), while the coldest was 1990 (24°F) — a 38°F range across recorded history. Rain or other precipitation has occurred on about 37% of December 22nd dates historically, with the wettest December 22nd recording 4.04" of rain. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for December 22nd in San Ramon, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 55° | 51° | 53° | 1.96" | — |
| 2024 | 54° | 45° | 49° | 0.05" | — |
| 2023 | 58° | 46° | 52° | — | — |
| 2022 | 57° | 43° | 50° | — | — |
| 2021 | 53° | 41° | 47° | 1.73" | — |
| 2020 | 66° | 40° | 53° | — | — |
| 2019 | 57° | 48° | 53° | — | — |
| 2018 | 53° | 42° | 48° | — | — |
| 2017 | 49° | 37° | 43° | — | — |
| 2016 | 56° | 42° | 49° | — | — |
| 2015 | 52° | 48° | 50° | 4.04" | — |
| 2014 | 59° | 49° | 54° | 0.03" | — |
| 2013 | 58° | 42° | 50° | — | — |
| 2012 | 48° | 41° | 45° | 2.77" | — |
| 2011 | 56° | 40° | 48° | — | — |
| 2010 | 48° | 41° | 45° | 0.91" | — |
| 2009 | 48° | 30° | 39° | 0.41" | — |
| 2008 | 48° | 38° | 43° | — | — |
| 2007 | 47° | 26° | 36° | — | — |
| 2006 | 55° | 39° | 47° | — | — |
| 2005warmest | 64° | 59° | 62° | — | — |
| 2004 | 59° | 46° | 53° | — | — |
| 2003 | 56° | 39° | 47° | — | — |
| 2002 | 49° | 36° | 42° | — | — |
| 2001 | 45° | 33° | 39° | 0.05" | — |
| 2000 | 57° | 43° | 50° | — | — |
| 1999 | 68° | 47° | 57° | — | — |
| 1998 | 45° | 27° | 36° | — | — |
| 1997 | 53° | 42° | 48° | — | — |
| 1996 | 44° | 39° | 42° | 2.26" | — |
| 1995 | 47° | 40° | 43° | — | — |
| 1994 | 47° | 33° | 40° | — | — |
| 1993 | 37° | 29° | 33° | — | — |
| 1992 | 53° | 39° | 46° | — | — |
| 1991 | 53° | 36° | 44° | — | — |
| 1990coldest | 29° | 20° | 24° | — | — |
| 1989 | 63° | 40° | 51° | — | — |
| 1987 | 51° | 39° | 45° | — | — |
| 1986 | 45° | 39° | 42° | 0.25" | — |
| 1985 | 71° | 47° | 59° | — | — |
| 1984 | 50° | 34° | 42° | — | — |
| 1983 | 40° | 35° | 37° | 0.64" | — |
| 1982 | 49° | 41° | 45° | 3.99" | — |
| 1981 | 55° | 43° | 49° | — | — |
| 1980 | 57° | 45° | 51° | 1.68" | — |
| 1979 | 50° | 34° | 42° | 0.23" | — |
| 1978 | 55° | 36° | 45° | — | — |
| 1977 | 54° | 45° | 49° | 1.17" | — |
| 1976 | 67° | 42° | 54° | — | — |
| 1975 | 54° | 42° | 48° | 0.69" | — |
| 1974 | 48° | 30° | 39° | — | — |
| 1973 | 45° | 38° | 41° | 1.07" | — |
| 1972 | 63° | 44° | 53° | 0.51" | — |
| 1971 | 50° | 34° | 42° | 2.16" | — |
54 years of data from LIVERMORE CALIFORNIA