In July, National City typically sees daytime highs of 25.6°C and overnight lows around 15.7°C. Compared to the annual average high of 22.1°C, July runs +3.5°C.
July in National City averages a daytime high of 25.6°C and an overnight low of 15.7°C.
July runs +3.5°C compared to National City's annual average high of 22.1°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 25.6°C and cooler evenings around 15.7°C.