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San Mateo, CA Weather on August 26
August 26th in San Mateo, CA typically brings pleasant summer weather, with average highs around 74°F and lows near 56°F. Over 55 years of records, the warmest August 26th was in 1993 (73°F average), while the coldest was 1980 (61°F) — a 12°F range across recorded history. This date has historically been dry, with little recorded precipitation. Temperatures on this date have remained relatively stable over the past several decades.
What to Expect on August 26
Planning for August 26th in San Mateo, CA? Great weather for outdoor activities.
August 26 Weather Records for San Mateo
- •The all-time record high for August 26th in San Mateo, CA is 89°F, set in 1993.
- •The coldest August 26th on record dropped to 49°F in 1976.
Frequently Asked Questions
What was the warmest August 26 ever in San Mateo?
The warmest August 26 in San Mateo, CA reached 89°F in 1993. That is 15°F above the long-term average high of 74°F.
What was the coldest August 26 ever in San Mateo?
The coldest August 26 in San Mateo, CA dropped to 49°F in 1976. That is 7°F below the long-term average low of 56°F.
What is the average temperature on August 26 in San Mateo?
On August 26, San Mateo averages a high of 74°F and a low of 56°F based on 55 years of NOAA weather observations from BURLINGAME.
How many years of weather data are available for August 26 in San Mateo?
We have 55 years of weather records for August 26 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.
August 26 Weather History in San Mateo
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 76°F | 59°F | 0" | -- |
| 2024 | 83°F | 56°F | 0" | -- |
| 2023 | 69°F | 59°F | 0" | -- |
| 2022 | 75°F | 56°F | 0" | -- |
| 2021 | 77°F | 55°F | 0" | -- |
| 2020 | 66°F | 55°F | 0" | -- |
| 2019 | 81°F | 55°F | 0" | -- |
| 2018 | 72°F | 55°F | 0" | -- |
| 2017 | 81°F | 53°F | 0" | -- |
| 2016 | 72°F | 59°F | 0" | -- |
| 2015 | 77°F | 57°F | 0" | -- |
| 2014 | 74°F | 59°F | 0" | -- |
| 2013 | 70°F | 59°F | 0" | -- |
| 2012 | 67°F | 57°F | 0" | -- |
| 2011 | 69°F | 56°F | 0" | -- |
| 2010 | 69°F | 57°F | 0" | -- |
| 2009 | 70°F | 53°F | 0" | -- |
| 2008 | 79°F | 55°F | 0" | -- |
| 2007 | 72°F | 57°F | 0" | -- |
| 2006 | 69°F | 57°F | 0" | -- |
| 2005 | 71°F | 53°F | 0" | -- |
| 2004 | 78°F | 60°F | 0" | -- |
| 2003 | 75°F | 58°F | 0" | -- |
| 2002 | 79°F | 54°F | 0" | -- |
| 2001 | 73°F | 55°F | 0" | -- |
| 2000 | 70°F | 54°F | 0" | -- |
| 1999 | 79°F | 55°F | 0" | -- |
| 1998 | 70°F | 54°F | 0" | -- |
| 1997 | 79°F | 64°F | 0" | -- |
| 1996 | 71°F | 58°F | 0" | -- |
| 1995 | 69°F | 53°F | 0" | -- |
| 1994 | 68°F | 56°F | 0" | -- |
| 1993 | 89°F | 57°F | 0" | -- |
| 1992 | 72°F | 55°F | 0" | -- |
| 1991 | 68°F | 56°F | 0" | -- |
| 1990 | 77°F | 61°F | 0" | -- |
| 1989 | 73°F | 52°F | 0" | -- |
| 1988 | 78°F | 57°F | 0" | -- |
| 1987 | 75°F | 58°F | 0" | -- |
| 1986 | 70°F | 52°F | 0" | -- |
| 1985 | 66°F | 55°F | 0" | -- |
| 1984 | 73°F | 55°F | 0" | -- |
| 1983 | 76°F | 58°F | 0" | -- |
| 1982 | 69°F | 58°F | 0" | -- |
| 1981 | 79°F | 51°F | 0" | -- |
| 1980 | 69°F | 53°F | 0" | -- |
| 1979 | 73°F | 60°F | 0" | -- |
| 1978 | 78°F | 55°F | 0" | -- |
| 1977 | 79°F | 57°F | 0" | -- |
| 1976 | 77°F | 49°F | 0" | -- |
| 1975 | 82°F | 53°F | 0" | -- |
| 1974 | 75°F | 57°F | 0" | -- |
| 1973 | 72°F | 52°F | 0" | -- |
| 1972 | 79°F | 54°F | 0" | -- |
| 1971 | 78°F | 57°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.