Weather forecast for 10 daysWalnut Creek, CA

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 77°F
  • 52°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 11mphSW 220°
  • Humidity: 56%
  • UV index: 5
  • Sunrise: 7:20 am PDT
  • Sunset: 6:26 pm PDT
  • ▼
Today, the outlook remains bright and sunny.
Forecasted temperature values will span from a warm 77°F down to a crisp 51.8°F.
The forecasted temperature peak will correspond with October's average maximum of 74.1°F.
Sunrise will be at 7:20 am and sunset at 6:26 pm; the daylight will last for 11h and 7min.

10-day overview

Daily temperatures

Warmest day: today 77°C.
Minimum temperature: 68°C.

Chance of precipitation

Highest chance: Wednesday 54%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 77°F
  • 52°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 11mphSW 220°
  • Humidity: 56%
  • UV index: 5
  • Sunrise: 7:20 am PDT
  • Sunset: 6:26 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 50°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 12mphWSW 242°
  • Humidity: 58%
  • UV index: 5
  • Sunrise: 7:20 am PDT
  • Sunset: 6:25 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 72°F
  • 54°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 6mphN 11°
  • Humidity: 58%
  • UV index: 4
  • Sunrise: 7:21 am PDT
  • Sunset: 6:24 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 68°F
  • 54°F
Showers
Showers
  • Precip. probability: 54%
  • Precipitation: 0.16"
  • Wind: 6mphSW 228°
  • Humidity: 67%
  • UV index: 2
  • Sunrise: 7:22 am PDT
  • Sunset: 6:22 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 70°F
  • 52°F
AM Showers
AM Showers
  • Precip. probability: 35%
  • Precipitation: 0.16"
  • Wind: 9mphSW 236°
  • Humidity: 70%
  • UV index: 4
  • Sunrise: 7:23 am PDT
  • Sunset: 6:21 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 73°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0.04"
  • Wind: 7mphW 277°
  • Humidity: 63%
  • UV index: 4
  • Sunrise: 7:24 am PDT
  • Sunset: 6:20 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 73°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 7mphWSW 253°
  • Humidity: 52%
  • UV index: 4
  • Sunrise: 7:25 am PDT
  • Sunset: 6:18 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 70°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 9mphWSW 246°
  • Humidity: 56%
  • UV index: 4
  • Sunrise: 7:26 am PDT
  • Sunset: 6:17 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 70°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 7mphWSW 250°
  • Humidity: 56%
  • UV index: 4
  • Sunrise: 7:27 am PDT
  • Sunset: 6:16 pm PDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 70°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 7mphWSW 258°
  • Humidity: 55%
  • UV index: 4
  • Sunrise: 7:29 am PDT
  • Sunset: 6:15 pm PDT
  • ▼
For the next ten days, a combination of primarily gloomy and occasionally rainy and bright weather is forecasted.
Rainfall is predicted for Wednesday through Friday. The days with the most rainfall will be Wednesday and Thursday, with light precipitation of 0.16".
In the upcoming days, the highest temperature will range between 68°F and 77°F, while changes in the overnight low will be barely noticeable, as the lowest temperatures will remain in the range of 48.2°F to 53.6°F.
The warmest day is today, with a maximum temperature of 77°F; with a maximum temperature of 68°F, Monday and Wednesday will be the coldest days.
Updated: Oct 18, 2026 @ 07:40:50 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, in Walnut Creek, clear skies and sunshine are anticipated.

Today, the maximum temperature will be 77°F, while the minimum temperature will be 51.8°F.
The highest temperature will be in line with the average maximum of 74.1°F in October. The lowest temperature will be also in line with the average low of 54.3°F.

On Sunday, in Walnut Creek, sunrise will be at 7:20 am and sunset at 6:26 pm (PDT).

Today, the daylight will last for 11h and 7min.