Weather on January 18
San Francisco, CA
55 Years of Data
Avg High
59°F
Avg Low
47°F
Warmest
2021
64°F avg
Coldest
1977
44°F avg
About This Date
January 18th in San Francisco, CA typically brings cool winter weather, with average highs around 59°F and lows near 47°F. Over 56 years of records, the warmest January 18th was in 2021 (64°F average), while the coldest was 1977 (44°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 32% of January 18th dates historically, with the wettest January 18th recording 4.24" of rain. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for January 18th in San Francisco, 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 |
|---|---|---|---|---|---|
| 2026 | 65° | 51° | 58° | — | — |
| 2025 | 56° | 47° | 51° | — | — |
| 2024 | 58° | 49° | 53° | — | — |
| 2023 | 56° | 45° | 50° | 0.25" | — |
| 2022 | 57° | 49° | 53° | — | — |
| 2021warmest | 76° | 53° | 64° | — | — |
| 2020 | 54° | 47° | 50° | — | — |
| 2019 | 62° | 52° | 57° | — | — |
| 2018 | 56° | 50° | 53° | 1.09" | — |
| 2017 | 53° | 47° | 50° | 2.16" | — |
| 2016 | 62° | 53° | 58° | 0.58" | — |
| 2015 | 63° | 53° | 58° | — | — |
| 2014 | 69° | 49° | 59° | — | — |
| 2013 | 64° | 46° | 55° | — | — |
| 2012 | 53° | 41° | 47° | — | — |
| 2011 | 62° | 47° | 54° | — | — |
| 2010 | 56° | 49° | 52° | 2.51" | — |
| 2009 | 68° | 51° | 60° | — | — |
| 2008 | 63° | 44° | 53° | — | — |
| 2007 | 57° | 39° | 48° | — | — |
| 2006 | 56° | 48° | 52° | 0.36" | — |
| 2005 | 53° | 43° | 48° | — | — |
| 2004 | 57° | 47° | 52° | — | — |
| 2003 | 61° | 45° | 53° | — | — |
| 2002 | 59° | 41° | 50° | — | — |
| 2001 | 56° | 41° | 48° | — | — |
| 2000 | 60° | 49° | 54° | 1.09" | — |
| 1999 | 57° | 53° | 55° | 2.26" | — |
| 1998 | 60° | 48° | 54° | 4.24" | — |
| 1997 | 54° | 45° | 49° | — | — |
| 1996 | 59° | 51° | 55° | 0.94" | — |
| 1995 | 58° | 45° | 51° | — | — |
| 1994 | 69° | 46° | 58° | — | — |
| 1993 | 58° | 48° | 53° | 0.43" | — |
| 1992 | 65° | 44° | 54° | — | — |
| 1991 | 66° | 47° | 56° | — | — |
| 1990 | 63° | 43° | 53° | — | — |
| 1989 | 65° | 46° | 55° | — | — |
| 1988 | 57° | 47° | 52° | 0.08" | — |
| 1987 | 60° | 44° | 52° | — | — |
| 1986 | 60° | 56° | 58° | — | — |
| 1985 | 53° | 42° | 48° | — | — |
| 1984 | 51° | 41° | 46° | — | — |
| 1983 | 54° | 50° | 52° | 3.4" | — |
| 1982 | 54° | 42° | 48° | 0.25" | — |
| 1981 | 64° | 51° | 58° | — | — |
| 1980 | 56° | 48° | 52° | — | — |
| 1979 | 56° | 46° | 51° | 0.03" | — |
| 1978 | 56° | 52° | 54° | 1.7" | — |
| 1977coldest | 49° | 40° | 44° | — | — |
| 1976 | 66° | 46° | 56° | — | — |
| 1975 | 58° | 44° | 51° | — | — |
| 1974 | 61° | 55° | 58° | 0.18" | — |
| 1973 | 58° | 48° | 53° | 2.87" | — |
| 1972 | 51° | 44° | 48° | — | — |
| 1971 | 66° | 52° | 59° | — | — |
56 years of data from SAN FRANCISCO DWTN