Weather on May 18
San Leandro, CA
55 Years of Data
Avg High
70°F
Avg Low
50°F
Warmest
2008
124°F avg
Coldest
1974
46°F avg
About This Date
May 18th in San Leandro, CA typically brings pleasant spring weather, with average highs around 70°F and lows near 50°F. Over 52 years of records, the warmest May 18th was in 2008 (124°F average), while the coldest was 1974 (46°F) — a 78°F range across recorded history. Rain or other precipitation has occurred on about 2% of May 18th dates historically. The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
Planning for May 18th in San Leandro, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 73° | 47° | 60° | — | — |
| 2024 | 66° | 48° | 57° | — | — |
| 2023 | 65° | 48° | 56° | — | — |
| 2022 | 81° | 46° | 63° | — | — |
| 2021 | 70° | 45° | 57° | — | — |
| 2020 | 64° | 51° | 58° | — | — |
| 2019 | 52° | 46° | 49° | — | — |
| 2018 | 58° | 48° | 53° | — | — |
| 2017 | 76° | 47° | 61° | — | — |
| 2016 | 81° | 51° | 66° | — | — |
| 2015 | 52° | 48° | 50° | — | — |
| 2014 | 66° | 49° | 57° | — | — |
| 2013 | 68° | 47° | 57° | — | — |
| 2012 | 69° | 45° | 57° | — | — |
| 2011 | 58° | 45° | 51° | — | — |
| 2010 | 64° | 48° | 56° | — | — |
| 2009 | 68° | 54° | 61° | — | — |
| 2008warmest | 133° | 115° | 124° | — | — |
| 2007 | 72° | 45° | 58° | — | — |
| 2006 | 70° | 53° | 61° | — | — |
| 2005 | 62° | 54° | 58° | — | — |
| 2004 | 66° | 49° | 57° | — | — |
| 2003 | 75° | 50° | 63° | — | — |
| 2002 | 58° | 45° | 51° | — | — |
| 2001 | 78° | 49° | 63° | — | — |
| 2000 | 76° | 50° | 63° | — | — |
| 1999 | 61° | 47° | 54° | — | — |
| 1998 | 67° | 47° | 57° | — | — |
| 1997 | 82° | 56° | 69° | — | — |
| 1996 | 63° | 50° | 56° | — | — |
| 1995 | 73° | 56° | 64° | — | — |
| 1994 | 63° | 49° | 56° | — | — |
| 1993 | 73° | 50° | 62° | — | — |
| 1989 | 62° | 50° | 56° | — | — |
| 1988 | 68° | 45° | 56° | — | — |
| 1987 | 68° | 53° | 61° | — | — |
| 1986 | 87° | 40° | 63° | — | — |
| 1985 | 67° | 50° | 58° | — | — |
| 1984 | 70° | 48° | 59° | — | — |
| 1983 | 84° | 51° | 68° | — | — |
| 1982 | 65° | 44° | 54° | — | — |
| 1981 | 68° | 50° | 59° | 0.23" | — |
| 1980 | 77° | 48° | 63° | — | — |
| 1979 | 78° | 50° | 64° | — | — |
| 1978 | 86° | 56° | 71° | — | — |
| 1977 | 65° | 42° | 53° | — | — |
| 1976 | 62° | 42° | 52° | — | — |
| 1975 | 80° | 47° | 63° | — | — |
| 1974coldest | 58° | 35° | 46° | — | — |
| 1973 | 65° | 53° | 59° | — | — |
| 1972 | 65° | 47° | 56° | — | — |
| 1971 | 73° | 46° | 60° | — | — |
52 years of data from UPPER SAN LEANDRO FILTERS