Weather forecast for 10 daysSan Quentin, CA

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 75°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 10mphWSW 244°
  • Humidity: 72%
  • UV index: 5
  • Sunrise: 7:21 am PDT
  • Sunset: 6:28 pm PDT
  • ▼
On Sunday, October 18, variable cloud cover will persist, but sunshine will break through.
The temperature variation is anticipated to range from a maximum of a moderately hot 75.2°F to a minimum of a fresh 50°F.
Today, the weather pattern will resemble September more than October, with a forecast high of 75.2°F.
Sunrise will be at 7:21 am and sunset at 6:28 pm; the daylight will last for 11h and 7min.

10-day overview

Daily temperatures

Warmest day: today 75°C.
Coldest day: tomorrow 66°C.

Chance of precipitation

Highest chance: Wednesday 65%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 75°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 10mphWSW 244°
  • Humidity: 72%
  • UV index: 5
  • Sunrise: 7:21 am PDT
  • Sunset: 6:28 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 66°F
  • 50°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 12mphW 273°
  • Humidity: 63%
  • UV index: 5
  • Sunrise: 7:22 am PDT
  • Sunset: 6:26 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 70°F
  • 54°F
Cloudy
Cloudy
  • Precip. probability: 14%
  • Precipitation: 0.2"
  • Wind: 5mphNE 44°
  • Humidity: 68%
  • UV index: 3
  • Sunrise: 7:23 am PDT
  • Sunset: 6:25 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 68°F
  • 52°F
Showers
Showers
  • Precip. probability: 65%
  • Precipitation: 0.12"
  • Wind: 6mphENE 77°
  • Humidity: 76%
  • UV index: 3
  • Sunrise: 7:24 am PDT
  • Sunset: 6:24 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 70°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 9mphW 274°
  • Humidity: 76%
  • UV index: 4
  • Sunrise: 7:25 am PDT
  • Sunset: 6:23 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 72°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 23%
  • Precipitation: 0"
  • Wind: 7mphN 353°
  • Humidity: 71%
  • UV index: 4
  • Sunrise: 7:26 am PDT
  • Sunset: 6:21 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 72°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0.04"
  • Wind: 8mphNE 51°
  • Humidity: 68%
  • UV index: 4
  • Sunrise: 7:27 am PDT
  • Sunset: 6:20 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 70°F
  • 48°F
AM Showers
AM Showers
  • Precip. probability: 35%
  • Precipitation: 0.08"
  • Wind: 9mphWNW 296°
  • Humidity: 64%
  • UV index: 4
  • Sunrise: 7:28 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 70°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 8mphW 270°
  • Humidity: 64%
  • UV index: 4
  • Sunrise: 7:29 am PDT
  • Sunset: 6:18 pm PDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 70°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 13%
  • Precipitation: 0"
  • Wind: 7mphSSE 147°
  • Humidity: 66%
  • UV index: 4
  • Sunrise: 7:30 am PDT
  • Sunset: 6:16 pm PDT
  • ▼
Weather patterns suggest that primarily overcast and occasionally rain-filled weather is predicted.
Rain is predicted for Tuesday, Wednesday, Saturday and next Sunday.
In the coming days, the highest temperature will vary between 66.2°F and 75.2°F, while the minimum temperature is forecast to range between 46.4°F and 53.6°F.
Today is the warmest day, with a maximum temperature of 75.2°F; expect the coldest day on Monday with a high of 66.2°F.
Updated: Oct 18, 2026 @ 13:24:23 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, sunny moments will alternate with patchy cloud cover.

Today, the maximum temperature will be 75.2°F, while the minimum temperature will be 50°F.
The maximum temperature will be a few degrees higher than the average highest temperature of 68.9°F in October. The lowest temperature today will be also a few degrees lower than the average low temperature.

On Sunday, in San Quentin, sunrise will be at 7:21 am and sunset at 6:28 pm (PDT).

In San Quentin, the length of the day today will be 11h and 7min.