Weather on January 9
San Francisco, CA
55 Years of Data
Avg High
57°F
Avg Low
47°F
Warmest
1978
60°F avg
Coldest
2011
43°F avg
About This Date
January 9th in San Francisco, CA typically brings cool winter weather, with average highs around 57°F and lows near 47°F. Over 56 years of records, the warmest January 9th was in 1978 (60°F average), while the coldest was 2011 (43°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 48% of January 9th dates historically, with the wettest January 9th recording 3.86" of rain. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
Planning for January 9th in San Francisco, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 59° | 44° | 52° | — | — |
| 2025 | 68° | 48° | 58° | — | — |
| 2024 | 57° | 48° | 53° | 0.64" | — |
| 2023 | 59° | 51° | 55° | 3.05" | — |
| 2022 | 58° | 46° | 52° | — | — |
| 2021 | 60° | 44° | 52° | — | — |
| 2020 | 54° | 48° | 51° | 0.64" | — |
| 2019 | 61° | 54° | 57° | 0.15" | — |
| 2018 | 59° | 51° | 55° | 0.81" | — |
| 2017 | 59° | 53° | 56° | 0.43" | — |
| 2016 | 54° | 48° | 51° | 0.51" | — |
| 2015 | 66° | 53° | 60° | — | — |
| 2014 | 56° | 50° | 53° | 0.05" | — |
| 2013 | 54° | 46° | 50° | 0.03" | — |
| 2012 | 63° | 46° | 54° | — | — |
| 2011coldest | 47° | 40° | 43° | — | — |
| 2010 | 53° | 46° | 50° | — | — |
| 2009 | 60° | 42° | 51° | — | — |
| 2008 | 51° | 45° | 48° | — | — |
| 2007 | 65° | 48° | 56° | — | — |
| 2006 | 57° | 45° | 51° | — | — |
| 2005 | 57° | 48° | 53° | 0.03" | — |
| 2004 | 59° | 49° | 54° | 1.02" | — |
| 2003 | 56° | 50° | 53° | 2.51" | — |
| 2002 | 63° | 49° | 56° | — | — |
| 2001 | 51° | 45° | 48° | 0.23" | — |
| 2000 | 55° | 48° | 52° | — | — |
| 1999 | 52° | 39° | 45° | — | — |
| 1998 | 54° | 48° | 51° | 0.53" | — |
| 1997 | 63° | 45° | 54° | — | — |
| 1996 | 58° | 50° | 54° | 0.05" | — |
| 1995 | 64° | 55° | 60° | 2.59" | — |
| 1994 | 57° | 47° | 52° | — | — |
| 1993 | 54° | 43° | 48° | 0.13" | — |
| 1992 | 60° | 44° | 52° | — | — |
| 1991 | 55° | 48° | 52° | 1.07" | — |
| 1990 | 66° | 53° | 60° | — | — |
| 1989 | 50° | 45° | 47° | 0.13" | — |
| 1988 | 56° | 51° | 53° | 0.46" | — |
| 1987 | 59° | 46° | 53° | — | — |
| 1986 | 66° | 48° | 57° | — | — |
| 1985 | 55° | 47° | 51° | 0.05" | — |
| 1984 | 48° | 44° | 46° | — | — |
| 1983 | 66° | 41° | 54° | — | — |
| 1982 | 59° | 42° | 51° | — | — |
| 1981 | 52° | 42° | 47° | — | — |
| 1980 | 56° | 50° | 53° | 1.22" | — |
| 1979 | 58° | 49° | 53° | 0.64" | — |
| 1978warmest | 64° | 55° | 60° | 1.93" | — |
| 1977 | 57° | 44° | 51° | — | — |
| 1976 | 53° | 48° | 51° | 0.79" | — |
| 1975 | 52° | 44° | 48° | 0.13" | — |
| 1974 | 49° | 42° | 45° | — | — |
| 1973 | 55° | 49° | 52° | 3.86" | — |
| 1972 | 55° | 40° | 47° | — | — |
| 1971 | 53° | 42° | 48° | — | — |
56 years of data from SAN FRANCISCO DWTN