Weather on January 15
Santa Rosa, CA
55 Years of Data
Avg High
58°F
Avg Low
40°F
Warmest
2014
59°F avg
Coldest
1985
39°F avg
About This Date
January 15th in Santa Rosa, CA typically brings cool winter weather, with average highs around 58°F and lows near 40°F. Over 56 years of records, the warmest January 15th was in 2014 (59°F average), while the coldest was 1985 (39°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 32% of January 15th dates historically, with the wettest January 15th recording 2.18" of rain. The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
Planning for January 15th in Santa Rosa, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 68° | 37° | 53° | — | — |
| 2025 | 64° | 34° | 49° | — | — |
| 2024 | 59° | 47° | 53° | — | — |
| 2023 | 54° | 44° | 49° | 1.7" | — |
| 2022 | 63° | 36° | 49° | — | — |
| 2021 | 70° | 42° | 56° | — | — |
| 2020 | 52° | 26° | 39° | — | — |
| 2019 | 55° | 48° | 52° | 0.33" | — |
| 2018 | 57° | 42° | 50° | — | — |
| 2017 | 51° | 37° | 44° | — | — |
| 2016 | 58° | 44° | 51° | — | — |
| 2015 | 54° | 43° | 48° | — | — |
| 2014warmest | 71° | 47° | 59° | — | — |
| 2013 | 54° | 36° | 45° | — | — |
| 2012 | — | 34° | — | — | — |
| 2011 | 70° | 41° | 55° | — | — |
| 2010 | 61° | 39° | 50° | — | — |
| 2009 | 69° | 36° | 52° | — | — |
| 2008 | 59° | 35° | 47° | — | — |
| 2007 | 58° | 24° | 41° | — | — |
| 2006 | 56° | 32° | 44° | — | — |
| 2005 | 51° | 34° | 42° | — | — |
| 2004 | 63° | 46° | 54° | — | — |
| 2003 | 65° | 45° | 55° | — | — |
| 2002 | 60° | 35° | 48° | — | — |
| 2001 | 56° | 37° | 46° | — | — |
| 2000 | 62° | 52° | 57° | 0.61" | — |
| 1999 | 59° | 49° | 54° | 0.15" | — |
| 1998 | 61° | 52° | 56° | 2.18" | — |
| 1997 | 47° | 40° | 43° | 0.58" | — |
| 1996 | 55° | 46° | 51° | 0.86" | — |
| 1995 | 54° | 42° | 48° | 0.15" | — |
| 1994 | 66° | 39° | 53° | — | — |
| 1993 | 54° | 40° | 47° | 0.51" | — |
| 1992 | 59° | 35° | 47° | — | — |
| 1991 | 64° | 44° | 54° | — | — |
| 1990 | 57° | 39° | 48° | 0.03" | — |
| 1989 | 55° | 32° | 44° | — | — |
| 1988 | 54° | 43° | 48° | 1.35" | — |
| 1987 | 56° | 35° | 45° | — | — |
| 1986 | 53° | 44° | 49° | 0.43" | — |
| 1985coldest | 47° | 31° | 39° | — | — |
| 1984 | 49° | 42° | 45° | 0.69" | — |
| 1983 | 53° | 38° | 45° | — | — |
| 1982 | 51° | 34° | 42° | — | — |
| 1981 | 65° | 36° | 50° | — | — |
| 1980 | 58° | 46° | 52° | 0.91" | — |
| 1979 | 55° | 44° | 50° | — | — |
| 1978 | 57° | 45° | 51° | 1.7" | — |
| 1977 | 60° | 35° | 48° | — | — |
| 1976 | 67° | 33° | 50° | — | — |
| 1975 | 58° | 32° | 45° | — | — |
| 1974 | 63° | 52° | 57° | 1.37" | — |
| 1973 | 58° | 43° | 50° | 1.65" | — |
| 1972 | 59° | 30° | 45° | — | — |
| 1971 | 55° | 50° | 53° | 0.46" | — |
56 years of data from SANTA ROSA