South San Francisco weather — 10-day forecast

Temperature, rain, wind and feels-like in South San Francisco, hour by hour and over 10 days, with the seasonal normal for context.

Now

Reading from 15:00 · NOAA HRRR model

16 °C

Overcast

6.6 km/hforce 1

Next 12 h

  • 1516°
  • 1616°
  • 1717°
  • 1816°
  • 18:26Sunset
  • 1916°
  • 2016°
  • 2116°
  • 2216°
  • 2316°
  • 0016°
  • 0116°
  • 0216°
  • 0315°

↑ 17°17:00↓ 15°03:00

Humidity
80 %
Dew point
12 °C
Gusts
7.6 km/h
Clouds
90 %
Pressure
1,012 hPa

Grid point 1.6 km away · 3.0 km grid · elevation 2 m

Air quality

The European air-quality index for the city, and the pollutants that set it.

Reading from 17:00
26
Fair

Index set by Ozone

Ozone
65.0µg/m³
PM2.5
7.5µg/m³
PM10
9.2µg/m³
Nitrogen dioxide
11.9µg/m³
Sulphur dioxide
1.7µg/m³
Carbon monoxide
132.0µg/m³
Dust (AOD)
0.02

Generated using Copernicus Atmosphere Monitoring Service information

Hour by hour

Step-by-step detail: temperature, wind, cloud cover and ultraviolet.

Estimated from a deterministic model, not an ensemble probability.
°C

10 days

Each day's extremes and the chance of rain, out to the end of the run.

14° → 22°

Rain probability (> 1 mm): 50 ECMWF ensemble members.

  • Today

    Partly cloudy38 %

    17°

    15°

  • Wed

    Light drizzle40 %

    16°

    15°

  • Thu

    Light drizzle28 %

    18°

    14°

  • Fri

    Mainly clear

    20°

    14°

  • Sat

    Clear sky

    22°

    14°

  • Sun

    Partly cloudy

    19°

    15°

  • Mon

    Partly cloudy

    16°

    14°

  • Tue

    Overcast

    18°

    14°

  • Wed

    Partly cloudy

    22°

    16°

  • Thu

    Partly cloudy

    19°

    15°

Gusts · Wed 54.7 km/h

Sun and UV

Sunrise, sunset, day length and ultraviolet intensity.

Max UV5moderate
Sunrise
07:23
Daylight
11 h 03
Sunset
18:26

Radiation · 12.7 MJ/m²

Sea state

Sea state at the marine grid point closest to the city.

0.2 mperiod 13 s 289°

Significant height: the mean of the highest third of waves. Individual waves reach about twice it.

Data: ECMWF

Today in South San Francisco the mean temperature will be 15.7 °C — +0.9 °C against the normal for 20 October, measured from 1940 to 2026. (1,290 obs.)

South San Francisco climate — normals and trends →