In October, Vacaville typically sees daytime highs of 25.5°C and overnight lows around 9.6°C. Compared to the annual average high of 23.0°C, October runs +2.5°C.
October in Vacaville averages a daytime high of 25.5°C and an overnight low of 9.6°C.
October runs +2.5°C compared to Vacaville's annual average high of 23.0°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 25.5°C and cooler evenings around 9.6°C.