In August, El Cajon typically sees daytime highs of 30.5°C and overnight lows around 15.7°C. Compared to the annual average high of 23.9°C, August runs +6.6°C.
August in El Cajon averages a daytime high of 30.5°C and an overnight low of 15.7°C.
August runs +6.6°C compared to El Cajon's annual average high of 23.9°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 30.5°C and cooler evenings around 15.7°C.