Weather on December 22
Sunnyvale, CA
55 Years of Data
Avg High
58°F
Avg Low
44°F
Warmest
2024
63°F avg
Coldest
1990
33°F avg
About This Date
December 22nd in Sunnyvale, CA typically brings cool winter weather, with average highs around 58°F and lows near 44°F. Over 55 years of records, the warmest December 22nd was in 2024 (63°F average), while the coldest was 1990 (33°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 40% of December 22nd dates historically, with the wettest December 22nd recording 2.26" of rain. The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
Planning for December 22nd in Sunnyvale, 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 | 66° | 59° | 63° | — | — |
| 2024warmest | 69° | 57° | 63° | 0.08" | — |
| 2023 | 67° | 49° | 58° | — | — |
| 2022 | 61° | 45° | 53° | — | — |
| 2021 | 63° | 48° | 55° | 0.15" | — |
| 2020 | 61° | 42° | 51° | — | — |
| 2019 | 57° | 44° | 51° | 0.58" | — |
| 2018 | 61° | 46° | 53° | — | — |
| 2017 | 56° | 32° | 44° | — | — |
| 2016 | 63° | 43° | 53° | — | — |
| 2015 | 60° | 52° | 56° | 0.64" | — |
| 2014 | 64° | 52° | 58° | — | — |
| 2013 | 68° | 37° | 53° | — | — |
| 2012 | 60° | 51° | 56° | 1.09" | — |
| 2011 | 63° | 39° | 51° | — | — |
| 2010 | 61° | 47° | 54° | 0.08" | — |
| 2009 | 54° | 43° | 48° | — | — |
| 2008 | 54° | 43° | 48° | 0.51" | — |
| 2007 | 54° | 32° | 43° | — | — |
| 2006 | 56° | 43° | 49° | — | — |
| 2005 | 66° | 57° | 62° | 0.91" | — |
| 2004 | 61° | 44° | 52° | — | — |
| 2003 | 60° | 47° | 53° | 0.03" | — |
| 2002 | 56° | 43° | 49° | 0.03" | — |
| 2001 | 54° | 48° | 51° | 0.15" | — |
| 2000 | 58° | 45° | 51° | — | — |
| 1999 | 68° | 43° | 55° | — | — |
| 1998 | 47° | 28° | 37° | — | — |
| 1997 | 55° | 44° | 50° | — | — |
| 1996 | 56° | 44° | 50° | 1.02" | — |
| 1995 | 54° | 45° | 49° | 1.27" | — |
| 1994 | 54° | 35° | 44° | — | — |
| 1993 | 48° | 33° | 41° | — | — |
| 1992 | 59° | 40° | 49° | — | — |
| 1991 | 58° | 37° | 47° | — | — |
| 1990coldest | 41° | 25° | 33° | — | — |
| 1989 | 52° | 40° | 46° | — | — |
| 1988 | 57° | 45° | 51° | 0.97" | — |
| 1987 | 55° | 44° | 50° | 0.13" | — |
| 1986 | 58° | 44° | 51° | 0.2" | — |
| 1985 | 59° | 36° | 47° | — | — |
| 1984 | 56° | 35° | 45° | — | — |
| 1983 | 47° | 44° | 45° | 1.32" | — |
| 1982 | 64° | 49° | 56° | 2.26" | — |
| 1981 | 60° | 42° | 51° | — | — |
| 1980 | 64° | 51° | 58° | 0.05" | — |
| 1979 | 55° | 43° | 49° | — | — |
| 1978 | 56° | 35° | 45° | — | — |
| 1977 | 63° | 54° | 58° | 1.93" | — |
| 1976 | 53° | 42° | 48° | — | — |
| 1975 | 60° | 46° | 53° | — | — |
| 1974 | 54° | 42° | 48° | — | — |
| 1973 | 56° | 46° | 51° | — | — |
| 1972 | 63° | 49° | 56° | 0.18" | — |
| 1971 | 60° | 53° | 57° | 0.69" | — |
55 years of data from MOFFETT FED AIRFIELD