5-day weather forecast San Francisco Oct 31, 2026
Weather forecast San Francisco Saturday Oct 31, 2026: overcast, temperature from 13 °C to 17 °C.
Precipitation probability 19%. Wind up to 5.5 m/s (gusts 7.11 m/s). Air humidity 53–71%, atmospheric pressure 760–761 mm Hg, UV index up to 2.3.
5 days at a glance — tap a day to open it
Sunrise 07:34
Sunset 18:12
Sunset 18:12
Last Quarter61% illuminated
Moonrise 23:00 · Moonset 13:20
Moonrise 23:00 · Moonset 13:20
Chart
TableForecast from 13 °C to 17 °C and precipitation
Cloud cover and precipitation probability
Wind speed and direction
Air humidity
Atmospheric pressure
Ultraviolet index
Air quality & pollen
Air quality is available for the first three days only.
San Francisco on the map
Data Sources & Methodology
Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.