Weather forecast for 10 daysFoster City, CA
Weather forecast for the weekend
Sunday Oct 18, 2026
- 70°F
- 55°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 12mphWNW 283°
- Humidity: 69%
- UV index: 5
- Sunrise: 7:20 am PDT
- Sunset: 6:27 pm PDT
- details ▼
On Sunday, October 18, sunny skies and pleasant visibility are expected.
The temperature scale will run from a maximum of an agreeable 69.8°F to a minimum of a moderate 55.4°F.
Today's highest temperature is expected to match the regular high for October at 67.8°F.
Sunrise will be at 7:20 am and sunset at 6:27 pm; the daylight will last for 11h and 7min.
The temperature scale will run from a maximum of an agreeable 69.8°F to a minimum of a moderate 55.4°F.
Today's highest temperature is expected to match the regular high for October at 67.8°F.
Sunrise will be at 7:20 am and sunset at 6:27 pm; the daylight will last for 11h and 7min.
10-day overview
Daily temperatures
Maximum temperature: 70°C.
Minimum temperature: 66°C.
Minimum temperature: 66°C.
Chance of precipitation
Highest chance: Wednesday 55%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 70°F
- 55°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 12mphWNW 283°
- Humidity: 69%
- UV index: 5
- Sunrise: 7:20 am PDT
- Sunset: 6:27 pm PDT
- details ▼
- Monday
- Oct 19, 2026
- 66°F
- 52°F
Mostly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 12mphWNW 293°
- Humidity: 62%
- UV index: 5
- Sunrise: 7:21 am PDT
- Sunset: 6:26 pm PDT
- details ▼
- Tuesday
- Oct 20, 2026
- 70°F
- 55°F
Cloudy
- Precip. probability: 14%
- Precipitation: 0.08"
- Wind: 7mphNNE 31°
- Humidity: 65%
- UV index: 4
- Sunrise: 7:22 am PDT
- Sunset: 6:25 pm PDT
- details ▼
- Wednesday
- Oct 21, 2026
- 66°F
- 55°F
Showers
- Precip. probability: 55%
- Precipitation: 0.2"
- Wind: 6mphNE 45°
- Humidity: 76%
- UV index: 2
- Sunrise: 7:23 am PDT
- Sunset: 6:23 pm PDT
- details ▼
- Thursday
- Oct 22, 2026
- 66°F
- 54°F
AM Clouds / PM Sun
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 11mphW 279°
- Humidity: 77%
- UV index: 4
- Sunrise: 7:24 am PDT
- Sunset: 6:22 pm PDT
- details ▼
- Friday
- Oct 23, 2026
- 70°F
- 52°F
Partly Cloudy
- Precip. probability: 13%
- Precipitation: 0"
- Wind: 10mphNW 320°
- Humidity: 70%
- UV index: 5
- Sunrise: 7:25 am PDT
- Sunset: 6:21 pm PDT
- details ▼
- Saturday
- Oct 24, 2026
- 70°F
- 52°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 9mphNNW 347°
- Humidity: 62%
- UV index: 4
- Sunrise: 7:26 am PDT
- Sunset: 6:20 pm PDT
- details ▼
- Sunday
- Oct 25, 2026
- 68°F
- 52°F
AM Showers
- Precip. probability: 31%
- Precipitation: 0.04"
- Wind: 10mphWNW 303°
- Humidity: 63%
- UV index: 4
- Sunrise: 7:27 am PDT
- Sunset: 6:18 pm PDT
- details ▼
- Monday
- Oct 26, 2026
- 68°F
- 50°F
Partly Cloudy
- Precip. probability: 18%
- Precipitation: 0"
- Wind: 10mphNNW 332°
- Humidity: 61%
- UV index: 4
- Sunrise: 7:28 am PDT
- Sunset: 6:17 pm PDT
- details ▼
- Tuesday
- Oct 27, 2026
- 68°F
- 50°F
Partly Cloudy
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 9mphN 351°
- Humidity: 59%
- UV index: 4
- Sunrise: 7:29 am PDT
- Sunset: 6:16 pm PDT
- details ▼
During the ten-day period, primarily gloomy and occasionally rainy and sunny weather is forecasted.
Rain is forecasted for Tuesday, Wednesday and next Sunday.
The maximum temperature will be very similar during the next few days. Highs will range from 66.2°F to 69.8°F, while changes in the overnight low will be also barely noticeable, as night temperatures will lie between 50°F and 55.4°F.
The warmest days in Foster City will be Sunday, Tuesday, Friday and Saturday, with a maximum of 69.8°F; with a maximum temperature of 66.2°F, Monday, Wednesday and Thursday will be the coldest days in Foster City.
Rain is forecasted for Tuesday, Wednesday and next Sunday.
The maximum temperature will be very similar during the next few days. Highs will range from 66.2°F to 69.8°F, while changes in the overnight low will be also barely noticeable, as night temperatures will lie between 50°F and 55.4°F.
The warmest days in Foster City will be Sunday, Tuesday, Friday and Saturday, with a maximum of 69.8°F; with a maximum temperature of 66.2°F, Monday, Wednesday and Thursday will be the coldest days in Foster City.
Updated: Oct 18, 2026 @ 10:49:14 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Today, clear skies and sunshine are anticipated.
Today, the maximum temperature will be 69.8°F, while the minimum temperature will be 55.4°F.
Today, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature today will be also in line with the average low temperature.
Today, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature today will be also in line with the average low temperature.
On Sunday, in Foster City, sunrise will be at 7:20 am and sunset at 6:27 pm (PDT).
In Foster City, the length of the day today will be 11h and 7min.
