Weather on May 12
San Mateo, CA
55 Years of Data
Avg High
68°F
Avg Low
50°F
Warmest
1979
70°F avg
Coldest
1977
53°F avg
About This Date
May 12th in San Mateo, CA typically brings mild spring weather, with average highs around 68°F and lows near 50°F. Over 55 years of records, the warmest May 12th was in 1979 (70°F average), while the coldest was 1977 (53°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 11% of May 12th dates historically, with the wettest May 12th recording 1.02" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for May 12th in San Mateo, CA? Great weather for outdoor activities.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 63° | 52° | 57° | 0.25" | — |
| 2024 | 64° | 52° | 58° | — | — |
| 2023 | 69° | 53° | 61° | — | — |
| 2022 | 64° | 50° | 57° | — | — |
| 2021 | 68° | 50° | 59° | — | — |
| 2020 | 65° | 54° | 59° | 0.05" | — |
| 2019 | 64° | 54° | 59° | — | — |
| 2018 | 76° | 57° | 66° | — | — |
| 2017 | 64° | 51° | 58° | — | — |
| 2016 | 65° | 53° | 59° | — | — |
| 2015 | 62° | 51° | 57° | — | — |
| 2014 | 84° | 52° | 68° | — | — |
| 2013 | 69° | 53° | 61° | — | — |
| 2012 | 67° | 48° | 57° | — | — |
| 2011 | 63° | 50° | 56° | — | — |
| 2010 | 64° | 49° | 56° | — | — |
| 2009 | 63° | 49° | 56° | — | — |
| 2008 | 61° | 49° | 55° | — | — |
| 2007 | 61° | 50° | 55° | — | — |
| 2006 | 66° | 51° | 59° | — | — |
| 2005 | 69° | 54° | 61° | — | — |
| 2004 | 70° | 49° | 59° | — | — |
| 2003 | 69° | 49° | 59° | — | — |
| 2002 | 66° | 49° | 57° | — | — |
| 2001 | 65° | 53° | 59° | — | — |
| 2000 | 62° | 47° | 54° | — | — |
| 1999 | 59° | 47° | 53° | — | — |
| 1998 | 57° | 50° | 54° | 1.02" | — |
| 1997 | 70° | 51° | 60° | — | — |
| 1996 | 77° | 53° | 65° | — | — |
| 1995 | 62° | 49° | 55° | 0.23" | — |
| 1994 | 63° | 51° | 57° | — | — |
| 1993 | 65° | 48° | 56° | 0.05" | — |
| 1992 | 72° | 54° | 63° | — | — |
| 1991 | 62° | 51° | 57° | — | — |
| 1990 | 60° | 50° | 55° | — | — |
| 1989 | 66° | 48° | 57° | — | — |
| 1988 | 76° | 52° | 64° | — | — |
| 1987 | 78° | 53° | 66° | — | — |
| 1986 | 76° | 47° | 61° | — | — |
| 1985 | 70° | 46° | 58° | — | — |
| 1984 | 81° | 53° | 67° | — | — |
| 1983 | 59° | 52° | 55° | — | — |
| 1982 | 60° | 49° | 54° | — | — |
| 1981 | 74° | 49° | 61° | — | — |
| 1980 | 60° | 50° | 55° | 0.08" | — |
| 1979warmest | 86° | 54° | 70° | — | — |
| 1978 | 84° | 49° | 66° | — | — |
| 1977coldest | 64° | 41° | 53° | — | — |
| 1976 | 92° | 47° | 69° | — | — |
| 1975 | 70° | 46° | 58° | — | — |
| 1974 | — | 50° | — | — | — |
| 1973 | 76° | 48° | 62° | — | — |
| 1972 | 84° | 46° | 65° | — | — |
| 1971 | 66° | 50° | 58° | — | — |
55 years of data from BURLINGAME