Weather on December 23
Sunnyvale, CA
55 Years of Data
Avg High
58°F
Avg Low
42°F
Warmest
2024
66°F avg
Coldest
1990
33°F avg
About This Date
December 23rd in Sunnyvale, CA typically brings cool winter weather, with average highs around 58°F and lows near 42°F. Over 55 years of records, the warmest December 23rd was in 2024 (66°F average), while the coldest was 1990 (33°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 29% of December 23rd dates historically, with the wettest December 23rd recording 3.86" of rain. The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
Planning for December 23rd in Sunnyvale, CA? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 55° | 60° | — | — |
| 2024warmest | 74° | 59° | 66° | — | — |
| 2023 | 65° | 42° | 53° | — | — |
| 2022 | 62° | 45° | 53° | — | — |
| 2021 | 61° | 51° | 56° | 0.69" | — |
| 2020 | 60° | 38° | 49° | — | — |
| 2019 | 54° | 38° | 46° | — | — |
| 2018 | 62° | 46° | 54° | — | — |
| 2017 | 55° | 40° | 47° | — | — |
| 2016 | 56° | 42° | 49° | 1.37" | — |
| 2015 | 57° | 43° | 50° | — | — |
| 2014 | 69° | 49° | 59° | — | — |
| 2013 | 62° | 40° | 51° | — | — |
| 2012 | 55° | 48° | 52° | 3.86" | — |
| 2011 | 62° | 34° | 48° | — | — |
| 2010 | 59° | 43° | 51° | — | — |
| 2009 | 60° | 38° | 49° | — | — |
| 2008 | 53° | 41° | 47° | 0.08" | — |
| 2007 | 57° | 37° | 47° | — | — |
| 2006 | 57° | 37° | 47° | — | — |
| 2005 | 62° | 53° | 58° | 0.28" | — |
| 2004 | 62° | 45° | 53° | — | — |
| 2003 | 58° | 48° | 53° | 0.08" | — |
| 2002 | 55° | 38° | 46° | 0.05" | — |
| 2001 | 57° | 43° | 50° | 0.05" | — |
| 2000 | 57° | 38° | 47° | — | — |
| 1999 | 66° | 38° | 52° | — | — |
| 1998 | 49° | 29° | 39° | — | — |
| 1997 | 56° | 34° | 45° | — | — |
| 1996 | 60° | 44° | 52° | — | — |
| 1995 | 56° | 44° | 50° | — | — |
| 1994 | 57° | 36° | 46° | — | — |
| 1993 | 59° | 34° | 46° | — | — |
| 1992 | 63° | 42° | 52° | — | — |
| 1991 | 62° | 40° | 51° | — | — |
| 1990coldest | 43° | 23° | 33° | — | — |
| 1989 | 61° | 37° | 49° | — | — |
| 1988 | 56° | 39° | 47° | 0.03" | — |
| 1987 | 53° | 41° | 47° | — | — |
| 1986 | 59° | 42° | 51° | — | — |
| 1985 | 58° | 37° | 47° | — | — |
| 1984 | 53° | 34° | 43° | — | — |
| 1983 | 56° | 45° | 50° | 0.08" | — |
| 1982 | 54° | 44° | 49° | 0.08" | — |
| 1981 | 60° | 45° | 52° | — | — |
| 1980 | 61° | 47° | 54° | 0.03" | — |
| 1979 | 53° | 47° | 50° | 3.23" | — |
| 1978 | 55° | 34° | 44° | — | — |
| 1977 | 68° | 51° | 60° | 0.2" | — |
| 1976 | 57° | 41° | 49° | — | — |
| 1975 | 59° | 39° | 49° | — | — |
| 1974 | 54° | 39° | 46° | — | — |
| 1973 | 57° | 41° | 49° | — | — |
| 1972 | 57° | 48° | 53° | 0.1" | — |
| 1971 | 58° | 49° | 53° | 0.05" | — |
55 years of data from MOFFETT FED AIRFIELD