In April, San Francisco typically sees daytime highs of 18.3°C and overnight lows around 7.5°C. Compared to the annual average high of 19.2°C, April runs -1.0°C.
April in San Francisco averages a daytime high of 18.3°C and an overnight low of 7.5°C.
April runs -1.0°C compared to San Francisco's annual average high of 19.2°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 18.3°C and cooler evenings around 7.5°C.