Weather on January 20
Santa Rosa, CA
55 Years of Data
Avg High
59°F
Avg Low
39°F
Warmest
1971
58°F avg
Coldest
1992
39°F avg
About This Date
January 20th in Santa Rosa, CA typically brings cool winter weather, with average highs around 59°F and lows near 39°F. Over 56 years of records, the warmest January 20th was in 1971 (58°F average), while the coldest was 1992 (39°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 27% of January 20th dates historically, with the wettest January 20th recording 8.89" of rain. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
Planning for January 20th in Santa Rosa, CA? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 65° | 41° | 53° | — | — |
| 2025 | 68° | 37° | 53° | — | — |
| 2024 | 60° | 53° | 57° | 2.06" | — |
| 2023 | 60° | 34° | 47° | — | — |
| 2022 | 66° | 40° | 53° | — | — |
| 2021 | 67° | 35° | 51° | — | — |
| 2020 | 54° | 41° | 47° | — | — |
| 2019 | 60° | 53° | 57° | 1.22" | — |
| 2018 | 57° | 33° | 45° | — | — |
| 2017 | 51° | 44° | 48° | — | — |
| 2016 | 60° | 45° | 52° | — | — |
| 2015 | 61° | 45° | 53° | — | — |
| 2014 | 69° | 45° | 57° | — | — |
| 2013 | 62° | 42° | 52° | — | — |
| 2012 | 55° | 45° | 50° | 3.1" | — |
| 2011 | 68° | 34° | 51° | — | — |
| 2010 | 52° | 43° | 47° | 2.69" | — |
| 2009 | 69° | 35° | 52° | — | — |
| 2008 | 53° | 36° | 44° | — | — |
| 2007 | 65° | 33° | 49° | — | — |
| 2006 | 57° | 31° | 44° | — | — |
| 2005 | 56° | 39° | 47° | — | — |
| 2004 | 61° | 43° | 52° | — | — |
| 2003 | 49° | 39° | 44° | — | — |
| 2002 | 60° | 34° | 47° | — | — |
| 2001 | 60° | 37° | 49° | — | — |
| 2000 | 59° | 47° | 53° | 0.18" | — |
| 1999 | 57° | 50° | 54° | 3.07" | — |
| 1998 | 54° | 39° | 46° | 0.13" | — |
| 1997 | 56° | 43° | 49° | 0.81" | — |
| 1996 | 56° | 38° | 47° | 0.25" | — |
| 1995 | 56° | 41° | 48° | 0.38" | — |
| 1994 | 65° | 38° | 51° | — | — |
| 1993 | 57° | 50° | 54° | 8.89" | — |
| 1992coldest | 48° | 31° | 39° | 0.03" | — |
| 1991 | 67° | 36° | 51° | — | — |
| 1990 | 60° | 31° | 45° | — | — |
| 1989 | 64° | 36° | 50° | — | — |
| 1988 | 59° | 35° | 47° | — | — |
| 1987 | 65° | 45° | 55° | — | — |
| 1986 | 57° | 38° | 47° | — | — |
| 1985 | 46° | 37° | 42° | — | — |
| 1984 | 55° | 33° | 44° | — | — |
| 1983 | 54° | 30° | 42° | — | — |
| 1982 | 46° | 40° | 43° | 0.99" | — |
| 1981 | 59° | 51° | 55° | 2.01" | — |
| 1980 | 60° | 32° | 46° | — | — |
| 1979 | 63° | 41° | 52° | — | — |
| 1978 | 63° | 38° | 50° | — | — |
| 1977 | 58° | 36° | 47° | — | — |
| 1976 | 70° | 31° | 50° | — | — |
| 1975 | 58° | 33° | 45° | — | — |
| 1974 | 60° | 44° | 52° | — | — |
| 1973 | 58° | 32° | 45° | — | — |
| 1972 | 53° | 48° | 51° | 0.51" | — |
| 1971warmest | 69° | 46° | 58° | — | — |
56 years of data from SANTA ROSA