In April, Vallejo typically sees daytime highs of 19.7°C and overnight lows around 6.8°C. Compared to the annual average high of 20.8°C, April runs -1.1°C.
April in Vallejo averages a daytime high of 19.7°C and an overnight low of 6.8°C.
April runs -1.1°C compared to Vallejo's annual average high of 20.8°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 19.7°C and cooler evenings around 6.8°C.