Weather on May 15
Hayward, CA
55 Years of Data
Avg High
69°F
Avg Low
52°F
Warmest
2008
80°F avg
Coldest
1999
52°F avg
About This Date
May 15th in Hayward, CA typically brings mild spring weather, with average highs around 69°F and lows near 52°F. Over 52 years of records, the warmest May 15th was in 2008 (80°F average), while the coldest was 1999 (52°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 12% of May 15th dates historically, with the wettest May 15th recording 1.42" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 15th in Hayward, CA? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 76° | 53° | 64° | — | — |
| 2024 | 72° | 56° | 64° | — | — |
| 2023 | 70° | 54° | 62° | — | — |
| 2022 | 64° | 53° | 59° | — | — |
| 2021 | 61° | 51° | 56° | 0.08" | — |
| 2020 | 69° | 56° | 62° | 0.05" | — |
| 2019 | 66° | 54° | 60° | 1.42" | — |
| 2018 | 66° | 56° | 61° | — | — |
| 2017 | 66° | 52° | 59° | — | — |
| 2016 | 68° | 57° | 63° | — | — |
| 2015 | 62° | 52° | 57° | — | — |
| 2014 | 84° | 58° | 71° | — | — |
| 2013 | 64° | 53° | 59° | — | — |
| 2012 | 64° | 53° | 59° | — | — |
| 2011 | 61° | 47° | 54° | 0.08" | — |
| 2010 | 65° | 51° | 58° | — | — |
| 2009 | 71° | 53° | 62° | — | — |
| 2008warmest | 99° | 62° | 80° | — | — |
| 2007 | 56° | 51° | 53° | — | — |
| 2006 | 82° | 58° | 70° | — | — |
| 2005 | 71° | 60° | 66° | — | — |
| 2004 | 64° | 54° | 59° | — | — |
| 2003 | 62° | 52° | 57° | — | — |
| 2002 | 67° | 51° | 59° | — | — |
| 2001 | 73° | 58° | 65° | — | — |
| 2000 | 66° | 54° | 60° | 0.64" | — |
| 1999coldest | 61° | 44° | 52° | — | — |
| 1998 | 62° | 46° | 54° | — | — |
| 1997 | 82° | 58° | 70° | — | — |
| 1996 | 63° | 57° | 60° | — | — |
| 1995 | 68° | 54° | 61° | — | — |
| 1994 | 62° | 50° | 56° | — | — |
| 1993 | 67° | 50° | 58° | — | — |
| 1989 | 68° | 50° | 59° | — | — |
| 1988 | 76° | 51° | 63° | — | — |
| 1987 | 87° | 58° | 72° | — | — |
| 1986 | 73° | 48° | 61° | — | — |
| 1985 | 78° | 50° | 64° | — | — |
| 1984 | 65° | 46° | 55° | — | — |
| 1983 | 71° | 50° | 61° | — | — |
| 1982 | 67° | 49° | 58° | — | — |
| 1981 | 63° | 52° | 57° | — | — |
| 1980 | 64° | 49° | 56° | — | — |
| 1979 | 76° | 50° | 63° | — | — |
| 1978 | 70° | 55° | 62° | 0.08" | — |
| 1977 | 66° | 46° | 56° | — | — |
| 1976 | 70° | 48° | 59° | — | — |
| 1975 | 59° | 48° | 54° | — | — |
| 1974 | 68° | 42° | 55° | — | — |
| 1973 | 69° | 55° | 62° | — | — |
| 1972 | 83° | 49° | 66° | — | — |
| 1971 | 73° | 46° | 60° | — | — |
52 years of data from HAYWARD AIR TERMINAL