Kingshuk Mondal / CC BY 4.0
San Leandro, CA Weather on August 25
August 25th in San Leandro, CA typically brings pleasant summer weather, with average highs around 77°F and lows near 57°F. Over 53 years of records, the warmest August 25th was in 2009 (129°F average), while the coldest was 2012 (56°F) — a 73°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.2°F cooler on this date compared to 20-30 years ago.
What to Expect on August 25
Planning for August 25th in San Leandro, CA? Great weather for outdoor activities.
August 25 Weather Records for San Leandro
- •The all-time record high for August 25th in San Leandro, CA is 138°F, set in 2009.
- •The coldest August 25th on record dropped to 50°F in 2018.
- •Temperatures have reached 90°F or higher on August 25th in 4 of the last 53 years.
Frequently Asked Questions
What was the warmest August 25 ever in San Leandro?
The warmest August 25 in San Leandro, CA reached 138°F in 2009. That is 61°F above the long-term average high of 77°F.
What was the coldest August 25 ever in San Leandro?
The coldest August 25 in San Leandro, CA dropped to 50°F in 2018. That is 7°F below the long-term average low of 57°F.
What is the average temperature on August 25 in San Leandro?
On August 25, San Leandro averages a high of 77°F and a low of 57°F based on 53 years of NOAA weather observations from UPPER SAN LEANDRO FILTERS.
How many years of weather data are available for August 25 in San Leandro?
We have 53 years of weather records for August 25 in San Leandro, 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 25 Weather History in San Leandro
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 75°F | 55°F | -- | -- |
| 2024 | 81°F | 55°F | -- | -- |
| 2023 | 71°F | 56°F | -- | -- |
| 2022 | 76°F | 55°F | -- | -- |
| 2021 | 72°F | 51°F | -- | -- |
| 2020 | 75°F | 55°F | -- | -- |
| 2019 | 85°F | 61°F | -- | -- |
| 2018 | 73°F | 50°F | -- | -- |
| 2017 | 81°F | 52°F | -- | -- |
| 2016 | 67°F | 51°F | -- | -- |
| 2015 | 78°F | 55°F | -- | -- |
| 2014 | 68°F | 55°F | -- | -- |
| 2013 | 75°F | 58°F | -- | -- |
| 2012 | 63°F | 50°F | -- | -- |
| 2011 | 75°F | 54°F | -- | -- |
| 2010 | 93°F | 61°F | -- | -- |
| 2009 | 138°F | 121°F | -- | -- |
| 2008 | 72°F | 61°F | 0" | -- |
| 2007 | 68°F | 53°F | -- | -- |
| 2006 | 72°F | 58°F | 0" | -- |
| 2005 | 79°F | 53°F | -- | -- |
| 2004 | 74°F | 56°F | -- | -- |
| 2003 | 93°F | 62°F | -- | -- |
| 2002 | 71°F | 51°F | -- | -- |
| 2001 | 79°F | 56°F | -- | -- |
| 2000 | 83°F | 54°F | -- | -- |
| 1999 | 99°F | 59°F | -- | -- |
| 1998 | 62°F | 52°F | -- | -- |
| 1997 | 75°F | 59°F | -- | -- |
| 1996 | 69°F | 54°F | -- | -- |
| 1995 | 62°F | 53°F | -- | -- |
| 1994 | 70°F | 53°F | -- | -- |
| 1993 | 86°F | 65°F | -- | -- |
| 1992 | 71°F | 53°F | -- | -- |
| 1989 | 83°F | 52°F | 0" | -- |
| 1988 | 86°F | 54°F | 0" | -- |
| 1987 | 75°F | 57°F | 0" | -- |
| 1986 | 75°F | 55°F | 0" | -- |
| 1985 | 81°F | 54°F | 0" | -- |
| 1984 | 68°F | 58°F | 0" | -- |
| 1983 | 74°F | 58°F | 0" | -- |
| 1982 | 68°F | 57°F | 0" | -- |
| 1981 | 75°F | 57°F | 0" | -- |
| 1980 | 70°F | 55°F | 0" | -- |
| 1979 | 79°F | 59°F | 0" | -- |
| 1978 | 75°F | 57°F | 0" | -- |
| 1977 | 74°F | 57°F | 0" | -- |
| 1976 | 78°F | 55°F | 0" | -- |
| 1975 | 80°F | 53°F | 0" | -- |
| 1974 | 78°F | 53°F | 0" | -- |
| 1973 | 73°F | 50°F | 0" | -- |
| 1972 | 76°F | 54°F | 0" | -- |
| 1971 | 78°F | 58°F | 0" | -- |
Based on 53 years of data from NOAA station: UPPER SAN LEANDRO FILTERS
Monthly Climate Averages
Historical temperature and precipitation averages for San Leandro, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.