5-day weather forecast San Francisco Oct 31, 2026

17°13° · Overcast

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.

Sunrise 07:34
Sunset 18:12
Last Quarter61% illuminated
Moonrise 23:00 · Moonset 13:20
Chart
Table

Forecast from 13 °C to 17 °C and precipitation

Temperature & Precipitation
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Temperature (°C)141414141414141413141516151617161516151415141414
Precipitation (mm/hr)000000000000000000000000

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Cloud cover (%)10010090100100981001009894100911001006310010040102000
Rain chance (%)1818171918181818191515121414714155333333

Wind speed and direction

Wind & Wind gust
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Wind (m/s)3.53.8122.611.891.51.691.690.610.891.111.312.692.893.194.394.8944.815.53.113.613.812.69
Wind gust (m/s)4.815.143.723.612.392.642.112.311.671.611.813.362.9235.54.55.56.365.617.115.835.315.224.89
Wind direction (°)WNW 293°WNW 294°WNW 302°WNW 301°WNW 287°WNW 286°W 281°W 278°SW 222°W 267°WSW 244°WSW 242°W 267°W 265°W 273°W 274°WNW 286°W 281°WNW 292°WNW 301°NW 307°WNW 293°WNW 298°NW 312°

Air humidity

Humidity
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Humidity (%)707070717070696871656357595953606054575858575759

Atmospheric pressure

Pressure
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
Pressure (mm Hg)760761761761760760761761761761761761761761761761761761761761761761761761

Ultraviolet index

UV Index
Time00:0001:0002:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:00
UV Index0000000000.20.81.62.12.31.81.60.80.4000000

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.