Weather forecast for 10 daysSanta Rosa, CA

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 90°F
  • 46°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphS 180°
  • Humidity: 31%
  • UV index: 5
  • Sunrise: 7:22 am PDT
  • Sunset: 6:30 pm PDT
  • ▼
On Saturday, in Santa Rosa, sunshine and minimal clouds are in the outlook.
Substantial temperature variations are predicted, soaring to a maximum of a tropical 89.6°F and descending to a minimum of a frosty 46.4°F.
Temperatures are higher than average, more in line with September's norm of 79°F than with October's 72.3°F.
Sunrise will be at 7:22 am and sunset at 6:30 pm; the daylight will last for 11h and 8min.

Sunday Oct 18, 2026

  • 75°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 11mphSSW 206°
  • Humidity: 62%
  • UV index: 5
  • Sunrise: 7:23 am PDT
  • Sunset: 6:28 pm PDT
  • ▼
Tomorrow, on Sunday, October 18, changing cloud patterns will allow for periods of sunshine.
Day and night temperatures will contrast sharply, from a maximum of a moderately hot 75.2°F to a minimum of a chilly 44.6°F.
Expect the maximum temperature to remain consistent with the typical October high of 72.3°F.
Sunrise will be at 7:23 am and sunset at 6:28 pm; tomorrow's daylight will last for 11h and 5min.

10-day overview

Daily temperatures

Warmest day: today 90°C.
Coldest day: Monday 68°C.

Chance of precipitation

Highest chance: Thursday 34%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 90°F
  • 46°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphS 180°
  • Humidity: 31%
  • UV index: 5
  • Sunrise: 7:22 am PDT
  • Sunset: 6:30 pm PDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 75°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 19%
  • Precipitation: 0"
  • Wind: 11mphSSW 206°
  • Humidity: 62%
  • UV index: 5
  • Sunrise: 7:23 am PDT
  • Sunset: 6:28 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 68°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 11mphWSW 255°
  • Humidity: 62%
  • UV index: 4
  • Sunrise: 7:24 am PDT
  • Sunset: 6:27 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 70°F
  • 46°F
Cloudy
Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 7mphSE 133°
  • Humidity: 62%
  • UV index: 3
  • Sunrise: 7:25 am PDT
  • Sunset: 6:25 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 73°F
  • 48°F
Cloudy
Cloudy
  • Precip. probability: 17%
  • Precipitation: 0.08"
  • Wind: 7mphSSE 152°
  • Humidity: 59%
  • UV index: 3
  • Sunrise: 7:26 am PDT
  • Sunset: 6:24 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 70°F
  • 45°F
AM Showers
AM Showers
  • Precip. probability: 34%
  • Precipitation: 0.04"
  • Wind: 8mphSW 223°
  • Humidity: 74%
  • UV index: 4
  • Sunrise: 7:27 am PDT
  • Sunset: 6:23 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 73°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 7mphWSW 238°
  • Humidity: 66%
  • UV index: 4
  • Sunrise: 7:28 am PDT
  • Sunset: 6:22 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 73°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 10%
  • Precipitation: 0"
  • Wind: 9mphSW 231°
  • Humidity: 59%
  • UV index: 4
  • Sunrise: 7:29 am PDT
  • Sunset: 6:20 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 72°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 7mphSSW 195°
  • Humidity: 55%
  • UV index: 4
  • Sunrise: 7:30 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 73°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 7mphSE 141°
  • Humidity: 48%
  • UV index: 4
  • Sunrise: 7:31 am PDT
  • Sunset: 6:18 pm PDT
  • ▼
Looking ahead, conditions suggest a period of primarily dull and occasionally mostly clear and showery weather is forecasted.
Rainfall is expected on Wednesday and Thursday.
Temperature differences will be noticeable over the next several days. Forecast highs will fluctuate between 68°F and 89.6°F, while the low temperature range extends from 41°F to 48.2°F.
With a high of 89.6°F, today is the hottest day; with the highest temperature of 68°F, Monday will be the coldest day.
Updated: Oct 17, 2026 @ 13:56:27 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, in Santa Rosa, skies are expected to be clear and full of sunshine.

Today, the maximum temperature will be 89.6°F, while the minimum temperature will be 46.4°F.
The maximum temperature will be notably higher than the average highest temperature of 72.3°F in October. The lowest temperature today will be relatively lower than the average low temperature.

On Saturday, in Santa Rosa, sunrise will be at 7:22 am and sunset at 6:30 pm (PDT).

In Santa Rosa, today, there will be 11h and 8min of daylight.

Tomorrow, in Santa Rosa, partly cloudy skies will persist, making for a mix of sun and clouds.

Tomorrow, the highest temperature will be 75.2°F, while the lowest temperature will be 44.6°F.
Tomorrow, the maximum temperature will be in line with the average highest temperature in October. Tomorrow, the lowest temperature will be moderately lower than the average low temperature.

On Sunday, in Santa Rosa, sunrise will be at 7:23 am and sunset at 6:28 pm (PDT).

In Santa Rosa, the length of the day tomorrow will be 11h and 5min.