Weather on December 30
Santa Rosa, CA
55 Years of Data
Avg High
57°F
Avg Low
39°F
Warmest
1995
60°F avg
Coldest
1987
38°F avg
About This Date
December 30th in Santa Rosa, CA typically brings cool winter weather, with average highs around 57°F and lows near 39°F. Over 55 years of records, the warmest December 30th was in 1995 (60°F average), while the coldest was 1987 (38°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 36% of December 30th dates historically, with the wettest December 30th recording 4.06" of rain. The last decade has been 2.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.5°F cooler on this date compared to 20-30 years ago.
Planning for December 30th in Santa Rosa, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 59° | 36° | 47° | — | — |
| 2024 | 59° | 34° | 46° | — | — |
| 2023 | 61° | 47° | 54° | 1.73" | — |
| 2022 | 58° | 51° | 54° | — | — |
| 2021 | 56° | 38° | 47° | — | — |
| 2020 | 57° | 33° | 45° | — | — |
| 2019 | 58° | 37° | 47° | 2.01" | — |
| 2018 | 62° | 34° | 48° | — | — |
| 2017 | 58° | 32° | 45° | — | — |
| 2016 | 60° | 42° | 51° | — | — |
| 2015 | 46° | 36° | 41° | — | — |
| 2014 | 51° | 40° | 45° | — | — |
| 2013 | 64° | 45° | 54° | — | — |
| 2012 | 55° | 38° | 46° | — | — |
| 2011 | 59° | 49° | 54° | — | — |
| 2010 | 55° | 28° | 42° | — | — |
| 2009 | 56° | 44° | 50° | 0.61" | — |
| 2008 | 58° | 39° | 48° | — | — |
| 2007 | 57° | 39° | 48° | 0.05" | — |
| 2006 | 59° | 31° | 45° | — | — |
| 2005 | 56° | 47° | 51° | 4.06" | — |
| 2004 | 55° | 42° | 49° | 3.12" | — |
| 2003 | 59° | 45° | 52° | 0.64" | — |
| 2002 | 53° | 45° | 49° | 0.38" | — |
| 2001 | 56° | 53° | 54° | 1.07" | — |
| 2000 | 63° | 34° | 48° | — | — |
| 1999 | 61° | 35° | 48° | — | — |
| 1998 | 61° | 36° | 48° | — | — |
| 1997 | 64° | 39° | 52° | — | — |
| 1996 | 60° | 56° | 58° | 0.99" | — |
| 1995warmest | 65° | 56° | 60° | 0.41" | — |
| 1994 | 55° | 28° | 42° | — | — |
| 1993 | 58° | 40° | 49° | — | — |
| 1992 | 52° | 33° | 42° | 0.58" | — |
| 1991 | 55° | 42° | 49° | 0.03" | — |
| 1990 | 52° | 24° | 38° | — | — |
| 1989 | 70° | 38° | 54° | — | — |
| 1988 | 51° | 37° | 44° | 1.02" | — |
| 1987coldest | 49° | 28° | 38° | 0.18" | — |
| 1986 | 50° | 37° | 44° | — | — |
| 1985 | 52° | 42° | 47° | 2.01" | — |
| 1984 | 46° | 36° | 41° | — | — |
| 1983 | 60° | 52° | 56° | 2.67" | — |
| 1982 | 60° | 29° | 44° | — | — |
| 1981 | 58° | 49° | 53° | 3.07" | — |
| 1980 | 54° | 43° | 48° | — | — |
| 1979 | 56° | — | — | 1.24" | — |
| 1978 | 53° | 25° | 39° | — | — |
| 1977 | 59° | 43° | 51° | — | — |
| 1976 | 50° | 45° | 47° | 2.59" | — |
| 1975 | 63° | 35° | 49° | — | — |
| 1974 | 57° | 34° | 45° | — | — |
| 1973 | 61° | 35° | 48° | — | — |
| 1972 | 60° | 29° | 44° | — | — |
| 1971 | 55° | 37° | 46° | — | — |
55 years of data from SANTA ROSA