Weather on January 18
Santa Rosa, CA
55 Years of Data
About This Date
January 18th in Santa Rosa, CA typically brings mild winter weather, with average highs around 60°F and lows near 41°F. Over 56 years of records, the warmest January 18th was in 2021 (64°F average), while the coldest was 1984 (42°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 30% of January 18th dates historically, with the wettest January 18th recording 3.76" 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 January 18th in Santa Rosa, CA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 67° | 34° | 50° | — | — |
| 2025 | 57° | 41° | 49° | — | — |
| 2024 | 60° | 47° | 53° | — | — |
| 2023 | 53° | 32° | 43° | — | — |
| 2022 | 57° | 38° | 47° | — | — |
| 2021warmest | 80° | 49° | 64° | — | — |
| 2020 | 55° | 36° | 45° | — | — |
| 2019 | 59° | 47° | 53° | 0.76" | — |
| 2018 | 57° | 51° | 54° | 0.81" | — |
| 2017 | 50° | 43° | 46° | — | — |
| 2016 | 57° | 51° | 54° | — | — |
| 2015 | 61° | 52° | 56° | — | — |
| 2014 | 73° | 46° | 60° | — | — |
| 2013 | 63° | 39° | 51° | — | — |
| 2012 | 57° | 30° | 44° | — | — |
| 2011 | 69° | 39° | 54° | — | — |
| 2010 | 56° | 48° | 52° | 2.92" | — |
| 2009 | 70° | 36° | 53° | — | — |
| 2008 | 62° | 32° | 47° | — | — |
| 2007 | 62° | 27° | 44° | — | — |
| 2006 | 55° | 45° | 50° | 2.69" | — |
| 2005 | 53° | 42° | 48° | — | — |
| 2004 | 53° | 45° | 49° | — | — |
| 2003 | 60° | 41° | 51° | — | — |
| 2002 | 59° | 33° | 46° | — | — |
| 2001 | 54° | 32° | 43° | — | — |
| 2000 | 60° | 47° | 53° | 1.65" | — |
| 1999 | 60° | 53° | 57° | 1.45" | — |
| 1998 | 61° | 49° | 55° | 3.35" | — |
| 1997 | 57° | 40° | 48° | — | — |
| 1996 | 58° | 44° | 51° | 3.28" | — |
| 1995 | 56° | 41° | 48° | — | — |
| 1994 | 68° | 37° | 53° | — | — |
| 1993 | 57° | 45° | 51° | 0.41" | — |
| 1992 | 59° | 37° | 48° | — | — |
| 1991 | 66° | 39° | 53° | — | — |
| 1990 | 61° | 36° | 48° | — | — |
| 1989 | 63° | 35° | 49° | — | — |
| 1988 | 56° | 39° | 47° | 0.03" | — |
| 1987 | 59° | 31° | 45° | — | — |
| 1986 | 59° | 47° | 53° | 0.03" | — |
| 1985 | 58° | 31° | 44° | — | — |
| 1984coldest | 52° | 33° | 42° | 0.03" | — |
| 1983 | 54° | 48° | 51° | 0.66" | — |
| 1982 | 54° | 38° | 46° | — | — |
| 1981 | 57° | 43° | 50° | 0.25" | — |
| 1980 | 58° | 37° | 47° | — | — |
| 1979 | 59° | 36° | 47° | — | — |
| 1978 | 58° | 45° | 51° | 0.2" | — |
| 1977 | 54° | 32° | 43° | — | — |
| 1976 | 74° | 35° | 54° | — | — |
| 1975 | 57° | 37° | 47° | — | — |
| 1974 | 61° | 54° | 57° | 1.8" | — |
| 1973 | 55° | 47° | 51° | 3.76" | — |
| 1972 | 55° | 41° | 48° | — | — |
| 1971 | 68° | 47° | 57° | — | — |
Santa Rosa, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Santa Rosa, CA Monthly Precipitation
Average rainfall per month, in inches.
Santa Rosa, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Santa Rosa, CA
Most pleasant months in Santa Rosa, CA: July.