Weather on April 23
San Mateo, CA
55 Years of Data
About This Date
April 23rd in San Mateo, CA typically brings mild spring weather, with average highs around 66°F and lows near 50°F. Over 56 years of records, the warmest April 23rd was in 2019 (70°F average), while the coldest was 1974 (52°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 16% of April 23rd dates historically, with the wettest April 23rd recording 1.52" 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 April 23rd in San Mateo, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 68° | 52° | 60° | — | — |
| 2025 | 58° | 51° | 54° | — | — |
| 2024 | 62° | 56° | 59° | — | — |
| 2023 | 61° | 51° | 56° | — | — |
| 2022 | 70° | 51° | 60° | — | — |
| 2021 | 68° | 52° | 60° | — | — |
| 2020 | 71° | 54° | 62° | — | — |
| 2019warmest | 88° | 53° | 70° | — | — |
| 2018 | 74° | 52° | 63° | — | — |
| 2017 | 64° | 53° | 59° | — | — |
| 2016 | 63° | 51° | 57° | — | — |
| 2015 | 67° | 51° | 59° | — | — |
| 2014 | 66° | 52° | 59° | — | — |
| 2013 | 76° | 49° | 62° | — | — |
| 2012 | 67° | 54° | 60° | — | — |
| 2011 | 62° | 49° | 55° | 0.03" | — |
| 2010 | 67° | 48° | 57° | — | — |
| 2009 | 64° | 50° | 57° | — | — |
| 2008 | 61° | 48° | 54° | — | — |
| 2007 | 66° | 47° | 56° | — | — |
| 2006 | 61° | 52° | 56° | — | — |
| 2005 | 66° | 53° | 60° | — | — |
| 2004 | 76° | 51° | 63° | — | — |
| 2003 | 61° | 50° | 55° | — | — |
| 2002 | 76° | 49° | 62° | — | — |
| 2001 | 69° | 48° | 59° | — | — |
| 2000 | 62° | 50° | 56° | — | — |
| 1999 | 76° | 58° | 67° | — | — |
| 1998 | 65° | 54° | 59° | 0.15" | — |
| 1997 | 63° | 51° | 57° | — | — |
| 1996 | 70° | 51° | 60° | — | — |
| 1995 | 79° | 48° | 63° | — | — |
| 1994 | 55° | 49° | 52° | 0.66" | — |
| 1993 | 62° | 52° | 57° | 0.08" | — |
| 1992 | 75° | 47° | 61° | — | — |
| 1991 | 57° | 50° | 54° | — | — |
| 1990 | 61° | 51° | 56° | 0.36" | — |
| 1989 | 61° | 48° | 54° | 0.58" | — |
| 1988 | 61° | 47° | 54° | — | — |
| 1987 | 64° | 49° | 56° | — | — |
| 1986 | 61° | 48° | 54° | — | — |
| 1985 | 67° | 48° | 57° | — | — |
| 1984 | 63° | 50° | 56° | — | — |
| 1983 | 56° | 50° | 53° | 1.52" | — |
| 1982 | 68° | 45° | 56° | — | — |
| 1981 | 65° | 49° | 57° | — | — |
| 1980 | 61° | 48° | 54° | — | — |
| 1979 | 64° | 51° | 58° | 0.66" | — |
| 1978 | 74° | 44° | 59° | — | — |
| 1977 | 73° | 39° | 56° | — | — |
| 1976 | 70° | 41° | 55° | — | — |
| 1975 | 64° | 48° | 56° | — | — |
| 1974coldest | 61° | 44° | 52° | 0.74" | — |
| 1973 | 75° | 46° | 61° | — | — |
| 1972 | 60° | 48° | 54° | — | — |
| 1971 | 59° | 47° | 53° | — | — |
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
San Mateo, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.