In July, Vacaville typically sees daytime highs of 32.7°C and overnight lows around 13.5°C. Compared to the annual average high of 23.0°C, July runs +9.7°C.
July in Vacaville averages a daytime high of 32.7°C and an overnight low of 13.5°C.
July runs +9.7°C compared to Vacaville's annual average high of 23.0°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 32.7°C and cooler evenings around 13.5°C.