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San Mateo, CA Weather on May 25
May 25th in San Mateo, CA typically brings mild spring weather, with average highs around 68°F and lows near 52°F. Over 55 years of records, the warmest May 25th was in 2020 (72°F average), while the coldest was 1971 (55°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 7% of May 25th dates historically. Temperatures on this date have remained relatively stable over the past several decades.
What to Expect on May 25
Planning for May 25th in San Mateo, CA? Great weather for outdoor activities.
May 25 Weather Records for San Mateo
- •The all-time record high for May 25th in San Mateo, CA is 90°F, set in 2020.
- •The coldest May 25th on record dropped to 43°F in 1971.
- •Temperatures have reached 90°F or higher on May 25th in 1 of the last 55 years.
Frequently Asked Questions
What was the warmest May 25 ever in San Mateo?
The warmest May 25 in San Mateo, CA reached 90°F in 2020. That is 22°F above the long-term average high of 68°F.
What was the coldest May 25 ever in San Mateo?
The coldest May 25 in San Mateo, CA dropped to 43°F in 1971. That is 9°F below the long-term average low of 52°F.
What is the average temperature on May 25 in San Mateo?
On May 25, San Mateo averages a high of 68°F and a low of 52°F based on 55 years of NOAA weather observations from BURLINGAME.
How many years of weather data are available for May 25 in San Mateo?
We have 55 years of weather records for May 25 in San Mateo, CA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
May 25 Weather History in San Mateo
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 64°F | 53°F | 0" | -- |
| 2024 | 62°F | 53°F | 0" | -- |
| 2023 | 65°F | 54°F | 0" | -- |
| 2022 | 81°F | 57°F | 0" | -- |
| 2021 | 65°F | 54°F | 0" | -- |
| 2020 | 90°F | 55°F | 0" | -- |
| 2019 | 68°F | 53°F | 0" | -- |
| 2018 | 65°F | 55°F | 0.03" | -- |
| 2017 | 65°F | 55°F | 0" | -- |
| 2016 | 65°F | 56°F | 0" | -- |
| 2015 | 64°F | 53°F | 0" | -- |
| 2014 | 72°F | 54°F | 0" | -- |
| 2013 | 60°F | 50°F | 0" | -- |
| 2012 | 62°F | 50°F | 0" | -- |
| 2011 | 62°F | 49°F | 0.03" | -- |
| 2010 | 61°F | 55°F | 0.13" | -- |
| 2009 | 63°F | 49°F | 0" | -- |
| 2008 | 65°F | 49°F | 0" | -- |
| 2007 | 64°F | 49°F | 0" | -- |
| 2006 | 65°F | 55°F | 0" | -- |
| 2005 | 72°F | 55°F | 0" | -- |
| 2004 | 69°F | 55°F | 0" | -- |
| 2003 | 70°F | 55°F | 0" | -- |
| 2002 | 69°F | 51°F | 0" | -- |
| 2001 | 63°F | 51°F | 0" | -- |
| 2000 | 65°F | 53°F | 0" | -- |
| 1999 | 67°F | 50°F | 0" | -- |
| 1998 | 62°F | 52°F | 0" | -- |
| 1997 | 70°F | 53°F | 0" | -- |
| 1996 | 82°F | 55°F | 0" | -- |
| 1995 | 67°F | 52°F | 0" | -- |
| 1994 | 67°F | 53°F | 0" | -- |
| 1993 | 75°F | 55°F | 0" | -- |
| 1992 | 72°F | 57°F | 0" | -- |
| 1991 | 65°F | 50°F | 0" | -- |
| 1990 | 63°F | 49°F | 0.05" | -- |
| 1989 | 67°F | 51°F | 0" | -- |
| 1988 | 62°F | 52°F | 0" | -- |
| 1987 | 62°F | 53°F | 0" | -- |
| 1986 | 70°F | 53°F | 0" | -- |
| 1985 | 62°F | 53°F | 0" | -- |
| 1984 | 76°F | 52°F | 0" | -- |
| 1983 | 62°F | 52°F | 0" | -- |
| 1982 | 73°F | 51°F | 0" | -- |
| 1981 | 72°F | 54°F | 0" | -- |
| 1980 | 65°F | 46°F | 0" | -- |
| 1979 | 75°F | 52°F | 0" | -- |
| 1978 | 68°F | 49°F | 0" | -- |
| 1977 | 66°F | 45°F | 0" | -- |
| 1976 | 72°F | 51°F | 0" | -- |
| 1975 | 79°F | 48°F | 0" | -- |
| 1974 | -- | 44°F | 0" | -- |
| 1973 | 68°F | 52°F | 0" | -- |
| 1972 | 68°F | 47°F | 0" | -- |
| 1971 | 68°F | 43°F | 0" | -- |
Based on 55 years of data from NOAA station: BURLINGAME
Monthly Climate Averages
Historical temperature and precipitation averages for San Mateo, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.