Weather on May 1
San Mateo, CA
55 Years of Data
About This Date
May 1st in San Mateo, CA typically brings mild spring weather, with average highs around 68°F and lows near 50°F. Over 56 years of records, the warmest May 1st was in 2014 (74°F average), while the coldest was 1975 (52°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 11% of May 1st dates historically. 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 1st in San Mateo, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 63° | 54° | 58° | — | — |
| 2025 | 65° | 50° | 57° | — | — |
| 2024 | 72° | 49° | 60° | — | — |
| 2023 | 59° | 52° | 55° | 0.01" | — |
| 2022 | 67° | 49° | 58° | — | — |
| 2021 | 61° | 53° | 57° | — | — |
| 2020 | 69° | 52° | 60° | — | — |
| 2019 | 71° | 49° | 60° | — | — |
| 2018 | 67° | 50° | 58° | — | — |
| 2017 | 84° | 54° | 69° | — | — |
| 2016 | 80° | 54° | 67° | — | — |
| 2015 | 75° | 54° | 64° | — | — |
| 2014warmest | 86° | 62° | 74° | — | — |
| 2013 | 78° | 55° | 67° | — | — |
| 2012 | 59° | 49° | 54° | — | — |
| 2011 | 76° | 47° | 61° | — | — |
| 2010 | 65° | 48° | 56° | — | — |
| 2009 | 61° | 51° | 56° | 0.2" | — |
| 2008 | 66° | 44° | 55° | — | — |
| 2007 | 63° | 50° | 56° | — | — |
| 2006 | 69° | 50° | 60° | — | — |
| 2005 | 69° | 53° | 61° | — | — |
| 2004 | 76° | 50° | 63° | — | — |
| 2003 | 69° | 52° | 60° | — | — |
| 2002 | 61° | 50° | 55° | — | — |
| 2001 | 65° | 50° | 57° | — | — |
| 2000 | 65° | 50° | 57° | — | — |
| 1999 | 57° | 49° | 53° | — | — |
| 1998 | 66° | 57° | 62° | 0.04" | — |
| 1997 | 66° | 47° | 56° | — | — |
| 1996 | 86° | 57° | 72° | — | — |
| 1995 | 65° | 54° | 59° | 0.16" | — |
| 1994 | 59° | 50° | 55° | — | — |
| 1993 | 80° | 51° | 66° | — | — |
| 1992 | 73° | 50° | 62° | — | — |
| 1991 | 59° | 47° | 53° | 0.03" | — |
| 1990 | 81° | 53° | 67° | — | — |
| 1989 | 71° | 50° | 61° | — | — |
| 1988 | 63° | 44° | 53° | — | — |
| 1987 | 63° | 53° | 58° | 0.04" | — |
| 1986 | 66° | 47° | 56° | — | — |
| 1985 | 63° | 48° | 55° | — | — |
| 1984 | 69° | 51° | 60° | — | — |
| 1983 | 61° | 44° | 52° | — | — |
| 1982 | 58° | 48° | 53° | — | — |
| 1981 | 65° | 50° | 57° | — | — |
| 1980 | 69° | 50° | 60° | — | — |
| 1979 | 63° | 52° | 57° | — | — |
| 1978 | 76° | 48° | 62° | — | — |
| 1977 | 72° | 54° | 63° | — | — |
| 1976 | 73° | 40° | 56° | — | — |
| 1975coldest | 60° | 44° | 52° | — | — |
| 1974 | 60° | 49° | 54° | — | — |
| 1973 | 65° | 44° | 54° | — | — |
| 1972 | 78° | 45° | 61° | — | — |
| 1971 | 61° | 49° | 55° | — | — |
San Mateo, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
San Mateo, CA Monthly Precipitation
Average rainfall per month, in inches.
San Mateo, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit San Mateo, CA
Most pleasant months in San Mateo, CA: April, May, June, July, August, September, October.
What to expect on May 1st
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
May 1st outlook →