In July, La Mesa typically sees daytime highs of 26.8°C and overnight lows around 15.5°C. Compared to the annual average high of 22.5°C, July runs +4.3°C.
July in La Mesa averages a daytime high of 26.8°C and an overnight low of 15.5°C.
July runs +4.3°C compared to La Mesa's annual average high of 22.5°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 26.8°C and cooler evenings around 15.5°C.