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Vallejo, CA Weather on August 28
August 28th in Vallejo, CA typically brings warm summer weather, with average highs around 86°F and lows near 56°F — a 30°F daily swing. Over 55 years of records, the warmest August 28th was in 2015 (83°F average), while the coldest was 1975 (61°F) — a 22°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
What to Expect on August 28
Planning for August 28th in Vallejo, CA? Stay hydrated and seek shade during peak afternoon hours.
August 28 Weather Records for Vallejo
- •The all-time record high for August 28th in Vallejo, CA is 104°F, set in 2021.
- •The coldest August 28th on record dropped to 49°F in 1987.
- •Temperatures have reached 90°F or higher on August 28th in 17 of the last 55 years.
- •Last year (1971), August 28th was 9°F cooler than the long-term average.
Frequently Asked Questions
What was the warmest August 28 ever in Vallejo?
The warmest August 28 in Vallejo, CA reached 104°F in 2021. That is 18°F above the long-term average high of 86°F.
What was the coldest August 28 ever in Vallejo?
The coldest August 28 in Vallejo, CA dropped to 49°F in 1987. That is 7°F below the long-term average low of 56°F.
What is the average temperature on August 28 in Vallejo?
On August 28, Vallejo averages a high of 86°F and a low of 56°F based on 55 years of NOAA weather observations from VALLEJO.
How many years of weather data are available for August 28 in Vallejo?
We have 55 years of weather records for August 28 in Vallejo, 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 28 Weather History in Vallejo
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 85°F | 56°F | 0" | -- |
| 2024 | 95°F | 59°F | 0" | -- |
| 2023 | 92°F | -- | 0" | -- |
| 2022 | 77°F | 56°F | 0" | -- |
| 2021 | 104°F | 63°F | 0" | -- |
| 2020 | 80°F | 55°F | 0" | -- |
| 2019 | 88°F | 59°F | 0" | -- |
| 2018 | 74°F | 57°F | 0" | -- |
| 2017 | 101°F | 59°F | 0" | -- |
| 2016 | 77°F | 55°F | 0" | -- |
| 2015 | 100°F | 66°F | 0" | -- |
| 2014 | 82°F | 52°F | 0" | -- |
| 2013 | 86°F | 51°F | 0" | -- |
| 2012 | 90°F | 50°F | 0" | -- |
| 2011 | 78°F | 52°F | 0" | -- |
| 2010 | 75°F | 50°F | 0" | -- |
| 2009 | 97°F | 53°F | 0" | -- |
| 2008 | 100°F | 53°F | 0" | -- |
| 2007 | 94°F | 51°F | 0" | -- |
| 2006 | 77°F | 53°F | 0" | -- |
| 2005 | 87°F | 51°F | 0" | -- |
| 2004 | 99°F | 55°F | 0" | -- |
| 2003 | 73°F | 56°F | 0" | -- |
| 2002 | 73°F | 55°F | 0" | -- |
| 2001 | -- | 68°F | 0" | -- |
| 2000 | 87°F | 54°F | 0" | -- |
| 1999 | 80°F | 58°F | 0" | -- |
| 1998 | 88°F | 53°F | 0" | -- |
| 1997 | 86°F | 60°F | 0" | -- |
| 1996 | 93°F | 55°F | 0" | -- |
| 1995 | 83°F | 53°F | 0" | -- |
| 1994 | 83°F | 53°F | 0" | -- |
| 1993 | 98°F | 58°F | 0" | -- |
| 1992 | 82°F | 56°F | 0" | -- |
| 1991 | 81°F | 55°F | 0" | -- |
| 1990 | 89°F | 62°F | 0" | -- |
| 1989 | 86°F | 51°F | 0" | -- |
| 1988 | 87°F | 55°F | 0" | -- |
| 1987 | 90°F | 49°F | 0" | -- |
| 1986 | 83°F | 52°F | 0" | -- |
| 1985 | 87°F | 54°F | 0" | -- |
| 1984 | 92°F | 57°F | 0" | -- |
| 1983 | 89°F | 54°F | 0" | -- |
| 1982 | 80°F | 54°F | 0" | -- |
| 1981 | 100°F | 57°F | 0" | -- |
| 1980 | 80°F | 56°F | 0" | -- |
| 1979 | 82°F | 65°F | 0" | -- |
| 1978 | 97°F | 56°F | 0" | -- |
| 1977 | 102°F | 59°F | 0" | -- |
| 1976 | 88°F | 54°F | 0" | -- |
| 1975 | 71°F | 51°F | 0" | -- |
| 1974 | 78°F | 55°F | 0" | -- |
| 1973 | 74°F | 52°F | 0" | -- |
| 1972 | 76°F | 59°F | 0" | -- |
| 1971 | 77°F | 57°F | 0" | -- |
Based on 55 years of data from NOAA station: VALLEJO
Monthly Climate Averages
Historical temperature and precipitation averages for Vallejo, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.