Weather on December 30
Sunnyvale, CA
55 Years of Data
About This Date
December 30th 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 30th was in 2022 (62°F average), while the coldest was 1990 (41°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 33% of December 30th dates historically, with the wettest December 30th recording 1.91" 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 30th 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° | 36° | 46° | — | — |
| 2024 | 62° | 46° | 54° | — | — |
| 2023 | 62° | 53° | 58° | 0.79" | — |
| 2022warmest | 64° | 60° | 62° | — | — |
| 2021 | 55° | 41° | 48° | — | — |
| 2020 | 58° | 33° | 45° | — | — |
| 2019 | 59° | 44° | 52° | — | — |
| 2018 | 58° | 38° | 48° | — | — |
| 2017 | 61° | 40° | 50° | — | — |
| 2016 | 59° | 41° | 50° | — | — |
| 2015 | 57° | 34° | 45° | — | — |
| 2014 | 55° | 37° | 46° | — | — |
| 2013 | 63° | 37° | 50° | — | — |
| 2012 | 53° | 37° | 45° | — | — |
| 2011 | 65° | 53° | 59° | 0.1" | — |
| 2010 | 54° | 35° | 44° | — | — |
| 2009 | 57° | 49° | 53° | — | — |
| 2008 | 58° | 43° | 50° | — | — |
| 2007 | 53° | 42° | 48° | — | — |
| 2006 | 55° | 34° | 44° | — | — |
| 2005 | 62° | 52° | 57° | 0.3" | — |
| 2004 | 56° | 49° | 52° | 1.91" | — |
| 2003 | 53° | 45° | 49° | 0.03" | — |
| 2002 | 54° | 44° | 49° | 0.2" | — |
| 2001 | 59° | 52° | 55° | 0.69" | — |
| 2000 | 59° | 34° | 46° | — | — |
| 1999 | 60° | 35° | 48° | — | — |
| 1998 | 58° | 36° | 47° | — | — |
| 1997 | 63° | 40° | 51° | — | — |
| 1996 | 62° | 56° | 59° | 0.3" | — |
| 1995 | 60° | 52° | 56° | 1.4" | — |
| 1994 | 55° | 33° | 44° | — | — |
| 1993 | 65° | 42° | 53° | — | — |
| 1992 | 59° | 40° | 49° | 0.43" | — |
| 1991 | 59° | 46° | 53° | — | — |
| 1990coldest | 54° | 28° | 41° | — | — |
| 1989 | 68° | 45° | 56° | — | — |
| 1988 | 55° | 34° | 44° | 0.74" | — |
| 1987 | 53° | 40° | 46° | 0.05" | — |
| 1986 | 56° | 40° | 48° | — | — |
| 1985 | 56° | 46° | 51° | 0.13" | — |
| 1984 | 53° | 42° | 48° | — | — |
| 1983 | 65° | 56° | 60° | 1.14" | — |
| 1982 | 59° | 35° | 47° | — | — |
| 1981 | 59° | 52° | 55° | 0.1" | — |
| 1980 | 57° | 42° | 50° | — | — |
| 1979 | 62° | 51° | 57° | 0.86" | — |
| 1978 | 53° | 30° | 42° | — | — |
| 1977 | 62° | 47° | 54° | 0.13" | — |
| 1976 | 56° | 48° | 52° | 1.17" | — |
| 1975 | 57° | 40° | 48° | — | — |
| 1974 | 52° | 36° | 44° | — | — |
| 1973 | 62° | 46° | 54° | — | — |
| 1972 | 60° | 37° | 49° | — | — |
| 1971 | 52° | 40° | 46° | — | — |