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Vallejo, CA Weather on July 17
July 17th in Vallejo, CA typically brings warm summer weather, with average highs around 84°F and lows near 56°F — a 28°F daily swing. Over 55 years of records, the warmest July 17th was in 1988 (86°F average), while the coldest was 1999 (60°F) — a 26°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
What to Expect on July 17
Planning for July 17th in Vallejo, CA? Stay hydrated and seek shade during peak afternoon hours.
July 17 Weather Records for Vallejo
- •The all-time record high for July 17th in Vallejo, CA is 111°F, set in 1988.
- •The coldest July 17th on record dropped to 47°F in 2009.
- •Temperatures have reached 90°F or higher on July 17th in 16 of the last 55 years.
Frequently Asked Questions
What was the warmest July 17 ever in Vallejo?
The warmest July 17 in Vallejo, CA reached 111°F in 1988. That is 27°F above the long-term average high of 84°F.
What was the coldest July 17 ever in Vallejo?
The coldest July 17 in Vallejo, CA dropped to 47°F in 2009. That is 9°F below the long-term average low of 56°F.
What is the average temperature on July 17 in Vallejo?
On July 17, Vallejo averages a high of 84°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 July 17 in Vallejo?
We have 55 years of weather records for July 17 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.
July 17 Weather History in Vallejo
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 75°F | 55°F | 0" | -- |
| 2024 | 83°F | 55°F | 0" | -- |
| 2023 | 90°F | 58°F | 0" | -- |
| 2022 | 94°F | 54°F | 0" | -- |
| 2021 | 89°F | 54°F | 0" | -- |
| 2020 | 79°F | 55°F | 0" | -- |
| 2019 | 91°F | 56°F | 0" | -- |
| 2018 | 89°F | 55°F | 0" | -- |
| 2017 | 97°F | 61°F | 0" | -- |
| 2016 | 81°F | 54°F | 0" | -- |
| 2015 | 87°F | 58°F | 0" | -- |
| 2014 | 74°F | 59°F | 0" | -- |
| 2013 | 78°F | 51°F | 0" | -- |
| 2012 | 71°F | 54°F | 0" | -- |
| 2011 | 74°F | 56°F | 0" | -- |
| 2010 | 77°F | 53°F | 0" | -- |
| 2009 | 85°F | 47°F | 0" | -- |
| 2008 | 74°F | 51°F | 0" | -- |
| 2007 | 81°F | 55°F | 0" | -- |
| 2006 | 95°F | 73°F | 0" | -- |
| 2005 | 89°F | 56°F | 0" | -- |
| 2004 | 81°F | 56°F | 0" | -- |
| 2003 | 98°F | 55°F | 0" | -- |
| 2002 | 77°F | 53°F | 0" | -- |
| 2001 | 75°F | 55°F | 0" | -- |
| 2000 | 80°F | 55°F | 0" | -- |
| 1999 | 70°F | 51°F | 0" | -- |
| 1998 | 84°F | 56°F | 0" | -- |
| 1997 | 89°F | 56°F | 0" | -- |
| 1996 | 82°F | 54°F | 0" | -- |
| 1995 | 76°F | 63°F | 0" | -- |
| 1994 | 91°F | 52°F | 0" | -- |
| 1993 | 92°F | 54°F | 0" | -- |
| 1992 | 84°F | 56°F | 0" | -- |
| 1991 | 88°F | 56°F | 0" | -- |
| 1990 | 90°F | 56°F | 0" | -- |
| 1989 | 96°F | 62°F | 0" | -- |
| 1988 | 111°F | 60°F | 0" | -- |
| 1987 | 77°F | 49°F | 0" | -- |
| 1986 | 83°F | 48°F | 0" | -- |
| 1985 | 89°F | 55°F | 0" | -- |
| 1984 | 97°F | 68°F | 0" | -- |
| 1983 | 79°F | 51°F | 0" | -- |
| 1982 | 81°F | 65°F | 0" | -- |
| 1981 | 80°F | 56°F | 0" | -- |
| 1980 | 91°F | 62°F | 0" | -- |
| 1979 | 92°F | 54°F | 0" | -- |
| 1978 | 100°F | 58°F | 0" | -- |
| 1977 | 98°F | 56°F | 0" | -- |
| 1976 | 70°F | 56°F | 0" | -- |
| 1975 | 80°F | 55°F | 0" | -- |
| 1974 | 76°F | 59°F | 0" | -- |
| 1973 | 72°F | 57°F | 0" | -- |
| 1972 | 72°F | 60°F | 0" | -- |
| 1971 | 82°F | 54°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.