Weather on May 31
San Francisco, CA
55 Years of Data
Avg High
66°F
Avg Low
52°F
Warmest
2001
76°F avg
Coldest
1971
52°F avg
About This Date
May 31st in San Francisco, CA typically brings mild spring weather, with average highs around 66°F and lows near 52°F. Over 55 years of records, the warmest May 31st was in 2001 (76°F average), while the coldest was 1971 (52°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 7% of May 31st dates historically. The last decade has been 2.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.2°F cooler on this date compared to 20-30 years ago.
Planning for May 31st in San Francisco, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 53° | 64° | — | — |
| 2024 | 69° | 53° | 61° | — | — |
| 2023 | 60° | 52° | 56° | — | — |
| 2022 | 68° | 50° | 59° | — | — |
| 2021 | 69° | 53° | 61° | — | — |
| 2020 | 62° | 56° | 59° | — | — |
| 2019 | 65° | 51° | 58° | — | — |
| 2018 | 60° | 51° | 56° | — | — |
| 2017 | 64° | 52° | 58° | — | — |
| 2016 | 72° | 52° | 62° | — | — |
| 2015 | 60° | 50° | 55° | — | — |
| 2014 | 64° | 50° | 57° | — | — |
| 2013 | 73° | 52° | 62° | — | — |
| 2012 | 72° | 51° | 61° | — | — |
| 2011 | 61° | 53° | 57° | 0.18" | — |
| 2010 | 62° | 53° | 58° | — | — |
| 2009 | 58° | 52° | 55° | — | — |
| 2008 | 57° | 51° | 54° | — | — |
| 2007 | 58° | 52° | 55° | — | — |
| 2006 | 60° | 51° | 56° | — | — |
| 2005 | 65° | 54° | 59° | — | — |
| 2004 | 68° | 53° | 61° | — | — |
| 2003 | 62° | 50° | 56° | — | — |
| 2002 | 61° | 51° | 56° | — | — |
| 2001warmest | 90° | 62° | 76° | — | — |
| 2000 | 69° | 51° | 60° | — | — |
| 1999 | 60° | 51° | 56° | — | — |
| 1998 | 62° | 53° | 58° | — | — |
| 1997 | 84° | 62° | 73° | — | — |
| 1996 | 72° | 51° | 61° | — | — |
| 1995 | 76° | 51° | 63° | — | — |
| 1994 | 65° | 54° | 59° | — | — |
| 1993 | 71° | 58° | 64° | 0.03" | — |
| 1992 | 67° | 55° | 61° | — | — |
| 1991 | 75° | 51° | 63° | — | — |
| 1990 | 65° | 53° | 59° | — | — |
| 1989 | 80° | 51° | 66° | — | — |
| 1988 | 64° | 51° | 58° | — | — |
| 1987 | 68° | 57° | 63° | 0.08" | — |
| 1986 | 61° | 55° | 58° | — | — |
| 1985 | 63° | 54° | 58° | 0.03" | — |
| 1984 | 72° | 50° | 61° | — | — |
| 1983 | 68° | 53° | 61° | — | — |
| 1982 | 57° | 51° | 54° | — | — |
| 1981 | 67° | 51° | 59° | — | — |
| 1980 | 63° | 53° | 58° | — | — |
| 1979 | 64° | 52° | 58° | — | — |
| 1978 | 72° | 55° | 63° | — | — |
| 1977 | 65° | 52° | 58° | — | — |
| 1976 | 61° | 52° | 56° | — | — |
| 1975 | 61° | 52° | 56° | — | — |
| 1974 | 54° | 50° | 52° | — | — |
| 1973 | 65° | 52° | 58° | — | — |
| 1972 | 59° | 50° | 55° | — | — |
| 1971coldest | 57° | 47° | 52° | — | — |
55 years of data from SAN FRANCISCO DWTN