Weather forecast for 10 daysPetaluma, CA
Weather forecast for the weekend
Sunday Oct 18, 2026
- 75°F
- 46°F
Sunny
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 13mphW 264°
- Humidity: 66%
- UV index: 5
- Sunrise: 7:22 am PDT
- Sunset: 6:28 pm PDT
- details ▼
Tomorrow, in Petaluma, conditions remain stable and sunny, with little cloud presence.
Temperature readings will span from a daytime high of a moderately hot 75.2°F to a night low of a brisk 46.4°F.
Expected temperatures are trending moderately higher than October's climate norm of 71.2°F.
Sunrise will be at 7:22 am and sunset at 6:28 pm; tomorrow's daylight will last for 11h and 6min.
Temperature readings will span from a daytime high of a moderately hot 75.2°F to a night low of a brisk 46.4°F.
Expected temperatures are trending moderately higher than October's climate norm of 71.2°F.
Sunrise will be at 7:22 am and sunset at 6:28 pm; tomorrow's daylight will last for 11h and 6min.
10-day overview
Daily temperatures
Warmest day: tomorrow 75°C.
Minimum temperature: 68°C.
Minimum temperature: 68°C.
Chance of precipitation
Highest chance: Wednesday 47%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 46°F
Partly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 4mphWNW 285°
- Humidity: 94%
- UV index: 0
- Sunrise: 7:21 am PDT
- Sunset: 6:30 pm PDT
- details ▼
- Sunday
- Oct 18, 2026
- 75°F
- 46°F
Sunny
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 13mphW 264°
- Humidity: 66%
- UV index: 5
- Sunrise: 7:22 am PDT
- Sunset: 6:28 pm PDT
- details ▼
- Monday
- Oct 19, 2026
- 68°F
- 45°F
Mostly Cloudy
- Precip. probability: 18%
- Precipitation: 0.04"
- Wind: 13mphW 274°
- Humidity: 64%
- UV index: 5
- Sunrise: 7:23 am PDT
- Sunset: 6:27 pm PDT
- details ▼
- Tuesday
- Oct 20, 2026
- 72°F
- 48°F
Mostly Cloudy
- Precip. probability: 24%
- Precipitation: 0.04"
- Wind: 4mphSE 124°
- Humidity: 63%
- UV index: 4
- Sunrise: 7:24 am PDT
- Sunset: 6:25 pm PDT
- details ▼
- Wednesday
- Oct 21, 2026
- 68°F
- 48°F
AM Showers
- Precip. probability: 47%
- Precipitation: 0.04"
- Wind: 6mphENE 62°
- Humidity: 72%
- UV index: 4
- Sunrise: 7:25 am PDT
- Sunset: 6:24 pm PDT
- details ▼
- Thursday
- Oct 22, 2026
- 70°F
- 45°F
Partly Cloudy
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 10mphW 277°
- Humidity: 76%
- UV index: 4
- Sunrise: 7:26 am PDT
- Sunset: 6:23 pm PDT
- details ▼
- Friday
- Oct 23, 2026
- 73°F
- 43°F
Sunny
- Precip. probability: 11%
- Precipitation: 0"
- Wind: 8mphW 281°
- Humidity: 67%
- UV index: 4
- Sunrise: 7:27 am PDT
- Sunset: 6:21 pm PDT
- details ▼
- Saturday
- Oct 24, 2026
- 73°F
- 45°F
Partly Cloudy
- Precip. probability: 19%
- Precipitation: 0"
- Wind: 8mphSSW 212°
- Humidity: 64%
- UV index: 4
- Sunrise: 7:28 am PDT
- Sunset: 6:20 pm PDT
- details ▼
- Sunday
- Oct 25, 2026
- 73°F
- 45°F
Partly Cloudy
- Precip. probability: 22%
- Precipitation: 0"
- Wind: 9mphWSW 251°
- Humidity: 60%
- UV index: 4
- Sunrise: 7:29 am PDT
- Sunset: 6:19 pm PDT
- details ▼
- Monday
- Oct 26, 2026
- 72°F
- 43°F
Partly Cloudy
- Precip. probability: 17%
- Precipitation: 0"
- Wind: 9mphWSW 237°
- Humidity: 54%
- UV index: 4
- Sunrise: 7:30 am PDT
- Sunset: 6:18 pm PDT
- details ▼
During the ten-day period, primarily cloud-filled and occasionally sunny and wet weather is anticipated.
With minimal precipitation of 0.04", rainfall is expected on Monday through Wednesday.
In the upcoming days, the highest temperature will vary between 68°F and 75.2°F, while the lowest nightly temperature differences will be negligible, as night temperatures will lie between 42.8°F and 48.2°F.
The warmest day will be Sunday, with a maximum of 75.2°F; with a maximum temperature of 68°F, Monday and Wednesday will be the coldest days.
With minimal precipitation of 0.04", rainfall is expected on Monday through Wednesday.
In the upcoming days, the highest temperature will vary between 68°F and 75.2°F, while the lowest nightly temperature differences will be negligible, as night temperatures will lie between 42.8°F and 48.2°F.
The warmest day will be Sunday, with a maximum of 75.2°F; with a maximum temperature of 68°F, Monday and Wednesday will be the coldest days.
Updated: Oct 18, 2026 @ 06:17:36 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
On Sunday, the weather remains calm, bright, and sunny.
Tomorrow, the maximum temperature will be 75.2°F, while the minimum temperature will be 46.4°F.
Tomorrow, the maximum temperature will be slightly warmer than the average highest temperature in October. Tomorrow, the lowest temperature will be also a few degrees lower than the average low temperature.
Tomorrow, the maximum temperature will be slightly warmer than the average highest temperature in October. Tomorrow, the lowest temperature will be also a few degrees lower than the average low temperature.
On Sunday, in Petaluma, sunrise will be at 7:22 am and sunset at 6:28 pm (PDT).
In Petaluma, tomorrow, there will be 11h and 6min of daylight.
