Weather on December 27
Sunnyvale, CA
55 Years of Data
Avg High
58°F
Avg Low
42°F
Warmest
1973
60°F avg
Coldest
2015
38°F avg
About This Date
December 27th 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 27th was in 1973 (60°F average), while the coldest was 2015 (38°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 40% of December 27th dates historically, with the wettest December 27th recording 3.18" of rain. The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for December 27th in Sunnyvale, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 57° | 48° | 53° | — | — |
| 2024 | 66° | 54° | 60° | 0.15" | — |
| 2023 | 64° | 50° | 57° | 0.03" | — |
| 2022 | 61° | 48° | 54° | 2.87" | — |
| 2021 | 53° | 43° | 48° | 0.66" | — |
| 2020 | 62° | 43° | 52° | — | — |
| 2019 | 57° | 34° | 45° | — | — |
| 2018 | 60° | 47° | 53° | — | — |
| 2017 | 59° | 38° | 48° | — | — |
| 2016 | 57° | 34° | 45° | — | — |
| 2015coldest | 47° | 29° | 38° | 0.08" | — |
| 2014 | 55° | 35° | 45° | — | — |
| 2013 | 59° | 39° | 49° | — | — |
| 2012 | 54° | 40° | 47° | — | — |
| 2011 | 60° | 45° | 52° | — | — |
| 2010 | 58° | 44° | 51° | — | — |
| 2009 | 60° | 47° | 53° | 0.03" | — |
| 2008 | 56° | 36° | 46° | — | — |
| 2007 | 49° | 37° | 43° | 0.13" | — |
| 2006 | 57° | 48° | 53° | 0.13" | — |
| 2005 | 63° | 51° | 57° | — | — |
| 2004 | 57° | 47° | 52° | 3.18" | — |
| 2003 | 53° | 33° | 43° | — | — |
| 2002 | 63° | 56° | 59° | — | — |
| 2001 | 66° | 45° | 55° | 0.18" | — |
| 2000 | 62° | 36° | 49° | — | — |
| 1999 | 64° | 36° | 50° | — | — |
| 1998 | 45° | 35° | 40° | — | — |
| 1997 | 54° | 31° | 42° | — | — |
| 1996 | 62° | 49° | 55° | 0.38" | — |
| 1995 | 64° | 42° | 53° | — | — |
| 1994 | 58° | 38° | 48° | 0.56" | — |
| 1993 | 60° | 40° | 50° | — | — |
| 1992 | 56° | 36° | 46° | — | — |
| 1991 | 67° | 51° | 59° | 1.37" | — |
| 1990 | 55° | 33° | 44° | — | — |
| 1989 | 57° | 38° | 47° | — | — |
| 1988 | 49° | 34° | 41° | 1.09" | — |
| 1987 | 54° | 45° | 49° | 0.36" | — |
| 1986 | 54° | 40° | 47° | — | — |
| 1985 | 49° | 35° | 42° | — | — |
| 1984 | 49° | 37° | 43° | — | — |
| 1983 | 59° | 48° | 54° | — | — |
| 1982 | 57° | 42° | 50° | — | — |
| 1981 | 57° | 45° | 51° | 0.05" | — |
| 1980 | 59° | 48° | 54° | — | — |
| 1979 | 53° | 36° | 44° | — | — |
| 1978 | 52° | 40° | 46° | 0.03" | — |
| 1977 | 61° | 50° | 55° | 0.1" | — |
| 1976 | 64° | 32° | 48° | — | — |
| 1975 | 63° | 49° | 56° | — | — |
| 1974 | 56° | 50° | 53° | 2.97" | — |
| 1973warmest | 63° | 58° | 60° | 1.14" | — |
| 1972 | 57° | 47° | 52° | 0.1" | — |
| 1971 | 53° | 45° | 49° | 1.02" | — |
55 years of data from MOFFETT FED AIRFIELD