Weather on March 31
San Mateo, CA
55 Years of Data
Avg High
64°F
Avg Low
48°F
Warmest
2000
67°F avg
Coldest
1971
48°F avg
About This Date
March 31st in San Mateo, CA typically brings mild spring weather, with average highs around 64°F and lows near 48°F. Over 56 years of records, the warmest March 31st was in 2000 (67°F average), while the coldest was 1971 (48°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 27% of March 31st dates historically, with the wettest March 31st recording 4.24" of rain. The last decade has been 2.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.9°F warmer on this date compared to 20-30 years ago.
Planning for March 31st in San Mateo, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 67° | 59° | 63° | 0.08" | — |
| 2025 | 61° | 49° | 55° | 0.3" | — |
| 2024 | 65° | 50° | 57° | — | — |
| 2023 | 59° | 44° | 52° | — | — |
| 2022 | 63° | 48° | 55° | — | — |
| 2021 | 81° | 54° | 67° | — | — |
| 2020 | 65° | 51° | 58° | — | — |
| 2019 | 70° | 49° | 59° | — | — |
| 2018 | 64° | 51° | 58° | — | — |
| 2017 | 68° | 55° | 62° | — | — |
| 2016 | 63° | 53° | 58° | — | — |
| 2015 | 65° | 53° | 59° | — | — |
| 2014 | 57° | 49° | 53° | 1.24" | — |
| 2013 | 65° | 54° | 59° | 0.25" | — |
| 2012 | 60° | 48° | 54° | 1.65" | — |
| 2011 | 80° | 54° | 67° | — | — |
| 2010 | 58° | 45° | 51° | 0.94" | — |
| 2009 | 68° | 45° | 56° | — | — |
| 2008 | 61° | 41° | 51° | — | — |
| 2007 | 64° | 46° | 55° | — | — |
| 2006 | 58° | 48° | 53° | 1.02" | — |
| 2005 | 70° | 44° | 57° | — | — |
| 2004 | 59° | 47° | 53° | — | — |
| 2003 | 63° | 52° | 57° | — | — |
| 2002 | 66° | 46° | 56° | — | — |
| 2001 | 68° | 50° | 59° | — | — |
| 2000warmest | 76° | 58° | 67° | — | — |
| 1999 | 53° | 42° | 48° | 0.03" | — |
| 1998 | 52° | 47° | 49° | 1.22" | — |
| 1997 | 58° | 45° | 51° | 0.03" | — |
| 1996 | 71° | 46° | 59° | — | — |
| 1995 | 67° | 52° | 59° | — | — |
| 1994 | 67° | 45° | 56° | — | — |
| 1993 | 63° | 50° | 56° | 0.58" | — |
| 1992 | 68° | 49° | 58° | — | — |
| 1991 | 63° | 52° | 57° | — | — |
| 1990 | 58° | 47° | 52° | — | — |
| 1989 | 62° | 50° | 56° | — | — |
| 1988 | 74° | 54° | 64° | — | — |
| 1987 | 73° | 50° | 62° | — | — |
| 1986 | 67° | 52° | 59° | — | — |
| 1985 | 74° | 45° | 59° | — | — |
| 1984 | 59° | 44° | 52° | 0.05" | — |
| 1983 | 62° | 52° | 57° | — | — |
| 1982 | 53° | 42° | 48° | 4.24" | — |
| 1981 | 59° | 47° | 53° | — | — |
| 1980 | 60° | 46° | 53° | — | — |
| 1979 | 65° | 43° | 54° | — | — |
| 1978 | 66° | 52° | 59° | 1.35" | — |
| 1977 | 65° | 52° | 58° | — | — |
| 1976 | 71° | 41° | 56° | 0.03" | — |
| 1975 | 62° | 42° | 52° | — | — |
| 1974 | 61° | 44° | 52° | — | — |
| 1973 | 58° | 48° | 53° | — | — |
| 1972 | 60° | 40° | 50° | — | — |
| 1971coldest | 59° | 38° | 48° | — | — |
56 years of data from BURLINGAME