In July, San Bernardino typically sees daytime highs of 34.3°C and overnight lows around 16.4°C. Compared to the annual average high of 24.7°C, July runs +9.6°C.
July in San Bernardino averages a daytime high of 34.3°C and an overnight low of 16.4°C.
July runs +9.6°C compared to San Bernardino's annual average high of 24.7°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 34.3°C and cooler evenings around 16.4°C.