In June, San Bernardino typically sees daytime highs of 29.8°C and overnight lows around 12.9°C. Compared to the annual average high of 24.7°C, June runs +5.1°C.
June in San Bernardino averages a daytime high of 29.8°C and an overnight low of 12.9°C.
June runs +5.1°C compared to San Bernardino's annual average high of 24.7°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 29.8°C and cooler evenings around 12.9°C.