Weather on January 31
San Francisco, CA
55 Years of Data
Avg High
59°F
Avg Low
47°F
Warmest
2015
63°F avg
Coldest
1971
44°F avg
About This Date
January 31st 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 31st was in 2015 (63°F average), while the coldest was 1971 (44°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 23% of January 31st dates historically, with the wettest January 31st recording 4.24" 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 31st in San Francisco, CA? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 63° | 51° | 57° | — | — |
| 2025 | 54° | 48° | 51° | 0.79" | — |
| 2024 | 60° | 53° | 57° | 4.24" | — |
| 2023 | 59° | 41° | 50° | — | — |
| 2022 | 60° | 48° | 54° | — | — |
| 2021 | 60° | 50° | 55° | — | — |
| 2020 | 67° | 51° | 59° | — | — |
| 2019 | 60° | 53° | 57° | 1.3" | — |
| 2018 | 67° | 50° | 58° | — | — |
| 2017 | 59° | 47° | 53° | — | — |
| 2016 | 56° | 48° | 52° | — | — |
| 2015warmest | 74° | 52° | 63° | — | — |
| 2014 | 58° | 48° | 53° | — | — |
| 2013 | 63° | 48° | 55° | — | — |
| 2012 | 57° | 47° | 52° | — | — |
| 2011 | 55° | 45° | 50° | — | — |
| 2010 | 57° | 48° | 53° | — | — |
| 2009 | 66° | 46° | 56° | — | — |
| 2008 | 53° | 46° | 50° | 1.24" | — |
| 2007 | 56° | 48° | 52° | — | — |
| 2006 | 56° | 44° | 50° | — | — |
| 2005 | 66° | 46° | 56° | — | — |
| 2004 | 56° | 44° | 50° | — | — |
| 2003 | 61° | 51° | 56° | — | — |
| 2002 | 58° | 40° | 49° | — | — |
| 2001 | 62° | 42° | 52° | — | — |
| 2000 | 54° | 50° | 52° | 0.13" | — |
| 1999 | 54° | 45° | 49° | 2.31" | — |
| 1998 | 61° | 51° | 56° | 0.43" | — |
| 1997 | 58° | 50° | 54° | — | — |
| 1996 | 61° | 51° | 56° | 4.11" | — |
| 1995 | 69° | 56° | 62° | — | — |
| 1994 | 60° | 46° | 53° | — | — |
| 1993 | 65° | 44° | 54° | — | — |
| 1992 | 66° | 48° | 57° | 0.36" | — |
| 1991 | 60° | 46° | 53° | — | — |
| 1990 | 54° | 43° | 48° | 0.76" | — |
| 1989 | 56° | 46° | 51° | — | — |
| 1988 | 57° | 43° | 50° | — | — |
| 1987 | 62° | 45° | 53° | — | — |
| 1986 | 60° | 55° | 58° | 1.93" | — |
| 1985 | 58° | 43° | 50° | — | — |
| 1984 | 60° | 48° | 54° | — | — |
| 1983 | 58° | 46° | 52° | — | — |
| 1982 | 62° | 45° | 53° | — | — |
| 1981 | 57° | 44° | 51° | — | — |
| 1980 | 54° | 48° | 51° | — | — |
| 1979 | 49° | 42° | 45° | — | — |
| 1978 | 56° | 47° | 51° | — | — |
| 1977 | 58° | 44° | 51° | — | — |
| 1976 | 73° | 52° | 62° | — | — |
| 1975 | 52° | 44° | 48° | 3.1" | — |
| 1974 | 54° | 48° | 51° | 0.97" | — |
| 1973 | 56° | 47° | 51° | — | — |
| 1972 | 55° | 39° | 47° | — | — |
| 1971coldest | 46° | 41° | 44° | — | — |
56 years of data from SAN FRANCISCO DWTN