Weather forecast for 10 daysPetaluma, CA
Weather forecast for the weekend
Sunday Oct 18, 2026
- 73°F
- 46°F
Sunny
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 13mphW 262°
- Humidity: 67%
- UV index: 5
- Sunrise: 7:22 am PDT
- Sunset: 6:28 pm PDT
- details ▼
Today, on Sunday, October 18, sunny and dry conditions are anticipated.
Temperature changes will be considerable, from a high of a warm 73.4°F to a low of a frosty 46.4°F.
Forecasts show that today the temperature will align with October's standard maximum of 71.2°F.
Sunrise will be at 7:22 am and sunset at 6:28 pm; the daylight will last for 11h and 6min.
Temperature changes will be considerable, from a high of a warm 73.4°F to a low of a frosty 46.4°F.
Forecasts show that today the temperature will align with October's standard maximum of 71.2°F.
Sunrise will be at 7:22 am and sunset at 6:28 pm; the daylight will last for 11h and 6min.
10-day overview
Daily temperatures
Maximum temperature: 73°C.
Minimum temperature: 68°C.
Minimum temperature: 68°C.
Chance of precipitation
Highest chance: Wednesday 44%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 73°F
- 46°F
Sunny
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 13mphW 262°
- Humidity: 67%
- 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: 20%
- Precipitation: 0"
- Wind: 13mphW 273°
- Humidity: 64%
- UV index: 5
- Sunrise: 7:23 am PDT
- Sunset: 6:27 pm PDT
- details ▼
- Tuesday
- Oct 20, 2026
- 72°F
- 46°F
AM Showers
- Precip. probability: 31%
- Precipitation: 0.04"
- Wind: 5mphSE 130°
- Humidity: 64%
- 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: 44%
- Precipitation: 0.08"
- Wind: 6mphESE 108°
- Humidity: 74%
- UV index: 4
- Sunrise: 7:25 am PDT
- Sunset: 6:24 pm PDT
- details ▼
- Thursday
- Oct 22, 2026
- 70°F
- 45°F
AM Showers
- Precip. probability: 31%
- Precipitation: 0.12"
- Wind: 9mphW 273°
- Humidity: 77%
- 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: 0.04"
- Wind: 9mphWNW 296°
- Humidity: 68%
- 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: 18%
- Precipitation: 0"
- Wind: 8mphS 180°
- Humidity: 63%
- UV index: 4
- Sunrise: 7:28 am PDT
- Sunset: 6:20 pm PDT
- details ▼
- Sunday
- Oct 25, 2026
- 73°F
- 45°F
Mostly Sunny
- Precip. probability: 21%
- Precipitation: 0"
- Wind: 9mphW 263°
- Humidity: 59%
- 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: 11%
- Precipitation: 0"
- Wind: 9mphWSW 250°
- Humidity: 57%
- UV index: 4
- Sunrise: 7:30 am PDT
- Sunset: 6:18 pm PDT
- details ▼
- Tuesday
- Oct 27, 2026
- 72°F
- 41°F
Partly Cloudy
- Precip. probability: 16%
- Precipitation: 0"
- Wind: 8mphWSW 241°
- Humidity: 62%
- UV index: 4
- Sunrise: 7:31 am PDT
- Sunset: 6:17 pm PDT
- details ▼
Over the next ten days, a mix of dull, dry and sunny and rainy weather is predicted.
Rain is anticipated on Tuesday through Friday.
Highs will stay within a very narrow margin across the forecast window. Expected highs will hover between 68°F and 73.4°F, while nighttime temperatures are expected to vary from 41°F to 48.2°F.
The warmest days in Petaluma will be Sunday, Friday through next Sunday, with a maximum of 73.4°F; Monday and Wednesday, with the highest temperature of 68°F, will be the coldest days in Petaluma.
Rain is anticipated on Tuesday through Friday.
Highs will stay within a very narrow margin across the forecast window. Expected highs will hover between 68°F and 73.4°F, while nighttime temperatures are expected to vary from 41°F to 48.2°F.
The warmest days in Petaluma will be Sunday, Friday through next Sunday, with a maximum of 73.4°F; Monday and Wednesday, with the highest temperature of 68°F, will be the coldest days in Petaluma.
Updated: Oct 18, 2026 @ 07:09:48 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, in Petaluma, bright and sunny weather is expected.
Today, the highest temperature will be 73.4°F, while the lowest temperature will be 46.4°F.
The highest temperature will be in line with the average maximum of 71.2°F in October. Today, the lowest temperature will be slightly cooler than the average low temperature.
The highest temperature will be in line with the average maximum of 71.2°F in October. Today, the lowest temperature will be slightly cooler than the average low temperature.
On Sunday, in Petaluma, sunrise will be at 7:22 am and sunset at 6:28 pm (PDT).
Today, the daylight will last for 11h and 6min.
