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San Ramon, CA Weather on August 25
August 25th in San Ramon, CA typically brings warm summer weather, with average highs around 85°F and lows near 59°F — a 26°F daily swing. Over 55 years of records, the warmest August 25th was in 2004 (98°F average), while the coldest was 2018 (62°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 25th dates historically. The last decade has been 5.1°F cooler on this date compared to 20-30 years ago.
What to Expect on August 25
Planning for August 25th in San Ramon, CA? Stay hydrated and seek shade during peak afternoon hours.
August 25 Weather Records for San Ramon
- •The all-time record high for August 25th in San Ramon, CA is 136°F, set in 2004.
- •The coldest August 25th on record dropped to 50°F in 2002.
- •Temperatures have reached 90°F or higher on August 25th in 14 of the last 55 years.
Frequently Asked Questions
What was the warmest August 25 ever in San Ramon?
The warmest August 25 in San Ramon, CA reached 136°F in 2004. That is 51°F above the long-term average high of 85°F.
What was the coldest August 25 ever in San Ramon?
The coldest August 25 in San Ramon, CA dropped to 50°F in 2002. That is 9°F below the long-term average low of 59°F.
What is the average temperature on August 25 in San Ramon?
On August 25, San Ramon averages a high of 85°F and a low of 59°F based on 55 years of NOAA weather observations from LIVERMORE CALIFORNIA.
How many years of weather data are available for August 25 in San Ramon?
We have 55 years of weather records for August 25 in San Ramon, 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 Ramon
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 93°F | 71°F | 0" | -- |
| 2024 | 71°F | 54°F | 0" | -- |
| 2023 | 81°F | 54°F | 0" | -- |
| 2022 | 86°F | 65°F | 0" | -- |
| 2021 | 75°F | 60°F | 0" | -- |
| 2020 | 85°F | 61°F | 0" | -- |
| 2019 | 84°F | 70°F | 0" | -- |
| 2018 | 74°F | 51°F | 0" | -- |
| 2017 | 82°F | 65°F | 0" | -- |
| 2016 | 82°F | 64°F | 0" | -- |
| 2015 | 83°F | 66°F | 0" | -- |
| 2014 | 77°F | 52°F | 0" | -- |
| 2013 | 76°F | 56°F | 0" | -- |
| 2012 | 80°F | 60°F | 0" | -- |
| 2011 | 83°F | 66°F | 0" | -- |
| 2010 | 99°F | 80°F | 0" | -- |
| 2009 | 79°F | 56°F | 0" | -- |
| 2008 | 91°F | 58°F | 0" | -- |
| 2007 | 88°F | 59°F | 0" | -- |
| 2006 | 79°F | 54°F | -- | -- |
| 2005 | 90°F | 54°F | -- | -- |
| 2004 | 136°F | 59°F | -- | -- |
| 2003 | 100°F | 68°F | -- | -- |
| 2002 | 86°F | 50°F | -- | -- |
| 2001 | 91°F | 55°F | -- | -- |
| 2000 | 94°F | 60°F | -- | -- |
| 1999 | 103°F | 61°F | -- | -- |
| 1998 | 89°F | 61°F | 0" | -- |
| 1997 | 81°F | 58°F | -- | -- |
| 1996 | 76°F | 54°F | -- | -- |
| 1995 | 74°F | 53°F | -- | -- |
| 1994 | 83°F | 54°F | -- | -- |
| 1993 | 90°F | 65°F | -- | -- |
| 1992 | 87°F | 58°F | 0" | -- |
| 1991 | 74°F | 54°F | -- | -- |
| 1990 | 69°F | 58°F | -- | -- |
| 1989 | 82°F | 57°F | 0" | -- |
| 1988 | 94°F | 71°F | 0" | -- |
| 1987 | 86°F | 62°F | 0" | -- |
| 1986 | 83°F | 62°F | 0" | -- |
| 1985 | 95°F | 67°F | 0" | -- |
| 1984 | 75°F | 50°F | 0" | -- |
| 1983 | 76°F | 52°F | 0" | -- |
| 1982 | 86°F | 64°F | 0" | -- |
| 1981 | 78°F | 52°F | 0" | -- |
| 1980 | 81°F | 60°F | 0" | -- |
| 1979 | 83°F | 58°F | 0" | -- |
| 1978 | 77°F | 51°F | 0" | -- |
| 1977 | 74°F | 54°F | 0" | -- |
| 1976 | 88°F | 60°F | 0" | -- |
| 1975 | 89°F | 59°F | 0" | -- |
| 1974 | 96°F | 71°F | 0" | -- |
| 1973 | 73°F | 55°F | 0" | -- |
| 1972 | 91°F | 51°F | 0" | -- |
| 1971 | 88°F | 64°F | 0.01" | -- |
Based on 55 years of data from NOAA station: LIVERMORE CALIFORNIA
Monthly Climate Averages
Historical temperature and precipitation averages for San Ramon, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.