Foster City Weather Forecast

Current Conditions & 10-Day Outlook

Current Weather Conditions in Foster City

Foster City

California, United States

weather iconMainly clear
19°
Low 12°
High 24°

Hourly Foster City Weather Forecast

12 AMweather icon23°
1 AMweather icon22°
2 AMweather icon20°
3 AMweather icon19°
4 AMweather icon16°
5 AMweather icon16°
6 AMweather icon16°
7 AMweather icon15°
8 AMweather icon14°
9 AMweather icon13°
10 AMweather icon13°
11 AMweather icon13°
12 PMweather icon12°
1 PMweather icon14°
2 PMweather icon14°
3 PMweather icon16°
4 PMweather icon17°
5 PMweather icon18°
6 PMweather icon21°
7 PMweather icon23°
8 PMweather icon24°
9 PMweather icon24°
10 PMweather icon24°
11 PMweather icon24°
Wind
6kt NW

Gentle wind.

6kt
NESW
Niederschlag
0%

Minimal chance of precipitation.

Foster City 10-Day Weather Outlook

Heutiges Wetter in Foster City, California, United States

Mon, Jul 27

Showers svg
12°
24°

Tue, Jul 28

Showers svg
12°
25°

Wed, Jul 29

Showers svg
14°
28°

Thu, Jul 30

Showers svg
15°
28°

Fri, Jul 31

Showers svg
15°
32°

Sat, Aug 01

Showers svg
16°
31°

Sun, Aug 02

Showers svg
16°
33°

Mon, Aug 03

Showers svg
17°
32°

Tue, Aug 04

Showers svg
18°
34°

Gefühlt

18°

Feels cooler than actual temperature.

Luftdruck

1017 hPa

Expect clear and stable weather.

Luftfeuchtigkeit

69%

High humidity.

UV

8 - Very high

Take precautions.

Böen

17kt

Max. Windböengeschwindigkeit heute.

Bewölkung

25%

Partly cloudy, some clouds expected.

Tageslicht

14h 13m

Long days, short nights.

Regen

0.0mm

No rain, dry conditions expected.

Schneefall

0.0mm

No snowfall expected.

Current Air Quality in Foster City

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About Foster City Weather

General

This page provides the current weather forecast for Foster City, California, United States, including hourly conditions, a 10-day outlook, wind speed and direction, precipitation, UV index, and air quality - giving you everything you need to plan your day in one view.

Forecast & Methodology

The forecast data on this page is sourced from the ECMWF open-source model - a reliable global model used widely across weather services worldwide. For sailors, boaters, and mariners who need greater accuracy and higher resolution, PredictWind's proprietary forecast models deliver precision down to 1km resolution, updated multiple times daily and validated against real-world observations. Sign up free to access PredictWind's advanced forecasts.

Sailing & Marine Conditions

Foster City weather forecasts on PredictWind are optimised for sailors and boaters who need precise, reliable wind and wave data for passage planning and day sailing. PredictWind is used by ocean racers, cruising sailors, and commercial vessel operators across United States and worldwide. For detailed marine conditions including wave height, swell period, and offshore wind forecasts, see the Foster City marine forecast.

Units

Wind speed is displayed in knots - the standard unit used by sailors, weather services, and maritime authorities. Temperature is shown in degrees Celsius. Use the toggle at the top of the page to switch between Celsius and Fahrenheit. Pressure is shown in hPa, rainfall in millimetres, and air quality is available in both US and EU AQI standards.