In October, San Francisco typically sees daytime highs of 21.8°C and overnight lows around 10.0°C. Compared to the annual average high of 19.2°C, October runs +2.6°C.
October in San Francisco averages a daytime high of 21.8°C and an overnight low of 10.0°C.
October runs +2.6°C compared to San Francisco's annual average high of 19.2°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 21.8°C and cooler evenings around 10.0°C.