Weather on December 9
Sunnyvale, CA
55 Years of Data
Avg High
60°F
Avg Low
44°F
Warmest
1993
61°F avg
Coldest
1972
34°F avg
About This Date
December 9th in Sunnyvale, CA typically brings mild winter weather, with average highs around 60°F and lows near 44°F. Over 55 years of records, the warmest December 9th was in 1993 (61°F average), while the coldest was 1972 (34°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 27% of December 9th dates historically, with the wettest December 9th recording 1.57" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 9th in Sunnyvale, CA? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 55° | 43° | 49° | — | — |
| 2024 | 69° | 41° | 55° | — | — |
| 2023 | 64° | 39° | 52° | — | — |
| 2022 | 57° | 44° | 51° | 0.03" | — |
| 2021 | 59° | 43° | 51° | 0.25" | — |
| 2020 | 65° | 39° | 52° | — | — |
| 2019 | 58° | 52° | 55° | — | — |
| 2018 | 54° | 41° | 47° | — | — |
| 2017 | 65° | 38° | 51° | — | — |
| 2016 | 67° | 56° | 61° | — | — |
| 2015 | 70° | 53° | 61° | — | — |
| 2014 | 64° | 53° | 59° | — | — |
| 2013 | 51° | 29° | 40° | — | — |
| 2012 | 66° | 46° | 56° | — | — |
| 2011 | 64° | 38° | 51° | — | — |
| 2010 | 65° | 57° | 61° | 0.03" | — |
| 2009 | 48° | 31° | 40° | — | — |
| 2008 | 58° | 40° | 49° | — | — |
| 2007 | 58° | 39° | 48° | — | — |
| 2006 | 62° | 50° | 56° | 0.86" | — |
| 2005 | 66° | 41° | 54° | — | — |
| 2004 | 65° | 48° | 56° | 0.03" | — |
| 2003 | 60° | 41° | 51° | 0.36" | — |
| 2002 | 61° | 47° | 54° | 0.08" | — |
| 2001 | 55° | 43° | 49° | 0.25" | — |
| 2000 | 58° | 48° | 53° | — | — |
| 1999 | 57° | 45° | 51° | 0.48" | — |
| 1998 | 56° | 37° | 46° | — | — |
| 1997 | 56° | 40° | 48° | — | — |
| 1996 | 62° | 54° | 58° | 0.13" | — |
| 1995 | 61° | 52° | 56° | — | — |
| 1994 | 52° | 31° | 41° | — | — |
| 1993warmest | 67° | 55° | 61° | 0.43" | — |
| 1992 | 64° | 55° | 60° | 0.1" | — |
| 1991 | 61° | 41° | 51° | — | — |
| 1990 | 66° | 39° | 53° | — | — |
| 1989 | 65° | 43° | 54° | — | — |
| 1988 | 65° | 46° | 55° | — | — |
| 1987 | 65° | 55° | 60° | — | — |
| 1986 | 64° | 40° | 52° | — | — |
| 1985 | 57° | 42° | 50° | — | — |
| 1984 | 68° | 50° | 59° | 0.08" | — |
| 1983 | 60° | 54° | 57° | 1.57" | — |
| 1982 | 65° | 45° | 55° | — | — |
| 1981 | 64° | 48° | 56° | 0.23" | — |
| 1980 | 59° | 36° | 47° | — | — |
| 1979 | 58° | 49° | 53° | — | — |
| 1978 | 56° | 35° | 45° | — | — |
| 1977 | 61° | 40° | 50° | — | — |
| 1976 | 61° | 42° | 51° | — | — |
| 1975 | 63° | 42° | 52° | — | — |
| 1974 | 54° | 41° | 47° | — | — |
| 1973 | 54° | 43° | 48° | — | — |
| 1972coldest | 40° | 29° | 34° | — | — |
| 1971 | 59° | 43° | 51° | — | — |
55 years of data from MOFFETT FED AIRFIELD