Weather forecast for tomorrowPetaluma, CA
Weather forecast for tomorrow
Monday Oct 19, 2026
- 68°F
- 45°F
Mostly Cloudy
- Precip. probability: 16%
- Precipitation: 0"
- Wind: 13mphW 274°
- Humidity: 63%
- UV index: 5
- Sunrise: 7:23 am PDT
- Sunset: 6:27 pm PDT
- details ▼
Tomorrow, on Monday, October 19, gray skies will define the day.
Temperatures will oscillate between a delightful 68°F at their highest and a frosty 44.6°F at their lowest.
The highest temperature is expected to follow the average for October, around 71.2°F.
Sunrise will be at 7:23 am and sunset at 6:27 pm; tomorrow's daylight will last for 11h and 4min.
Temperatures will oscillate between a delightful 68°F at their highest and a frosty 44.6°F at their lowest.
The highest temperature is expected to follow the average for October, around 71.2°F.
Sunrise will be at 7:23 am and sunset at 6:27 pm; tomorrow's daylight will last for 11h and 4min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 66°C.
Coldest hour: 6 am 48°C.
Coldest hour: 6 am 48°C.
Chance of precipitation
Highest chance: 3 am - 6 am 18%.
Hourly weather forecast
- 12 am
- 52°F
- Feels like:50°F
Partly Cloudy
- Precip. probability: 14%
- Precipitation: 0"
- Wind: 7mphW 278°
- Humidity: 95%
- Pressure: 29.97"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 2 am
- 50°F
- Feels like:48°F
Partly Cloudy
- Precip. probability: 16%
- Precipitation: 0"
- Wind: 6mphW 279°
- Humidity: 95%
- Pressure: 29.97"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 4 am
- 50°F
- Feels like:46°F
Partly Cloudy
- Precip. probability: 18%
- Precipitation: 0"
- Wind: 7mphWNW 283°
- Humidity: 96%
- Pressure: 29.94"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 6 am
- 48°F
- Feels like:46°F
Partly Cloudy
- Precip. probability: 18%
- Precipitation: 0"
- Wind: 6mphWNW 282°
- Humidity: 97%
- Pressure: 29.97"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
Sunrise: 7:23 am
- 8 am
- 48°F
- Feels like:46°F
Partly Cloudy
- Precip. probability: 12%
- Precipitation: 0"
- Wind: 6mphWNW 286°
- Humidity: 97%
- Pressure: 29.97"Hg
- Visibility: 8mi
- UV index: 0
- details ▼
- 10 am
- 55°F
- Feels like:54°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 7mphWNW 286°
- Humidity: 75%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 63°F
- Feels like:63°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphW 270°
- Humidity: 52%
- Pressure: 29.94"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 66°F
- Feels like:66°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 12mphW 264°
- Humidity: 44%
- Pressure: 29.91"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 64°F
- Feels like:63°F
Mostly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 13mphW 266°
- Humidity: 47%
- Pressure: 29.88"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 61°F
- Feels like:59°F
Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 10mphW 270°
- Humidity: 57%
- Pressure: 29.88"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:27 pm
- 8 pm
- 54°F
- Feels like:52°F
Cloudy
- Precip. probability: 19%
- Precipitation: 0"
- Wind: 7mphW 281°
- Humidity: 77%
- Pressure: 29.88"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 52°F
- Feels like:52°F
Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 4mphW 278°
- Humidity: 89%
- Pressure: 29.88"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Monday, a combination of cloud-filled and dry and sunny weather is forecasted.
The temperature will vary between the lowest temperature of 48.2°F and the highest temperature of 66.2°F. The warmest part of the day will be at 2 pm and 3 pm.
The maximum temperature will be consistent with October's average highest temperature of 71.2°F. The expected low will be more in line with what’s common in November than the current October average of 52.7°F.
The temperature will vary between the lowest temperature of 48.2°F and the highest temperature of 66.2°F. The warmest part of the day will be at 2 pm and 3 pm.
The maximum temperature will be consistent with October's average highest temperature of 71.2°F. The expected low will be more in line with what’s common in November than the current October average of 52.7°F.
Updated: Oct 18, 2026 @ 07:47:25 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
Tomorrow, in Petaluma, a dense overcast layer will shape the day’s outlook.
Tomorrow, the highest temperature will be 68°F, while the lowest temperature will be 44.6°F.
The highest temperature will be in line with the average maximum of 71.2°F in October. The lowest temperature will be a few degrees lower than the average low of 52.7°F.
The highest temperature will be in line with the average maximum of 71.2°F in October. The lowest temperature will be a few degrees lower than the average low of 52.7°F.
On Monday, in Petaluma, sunrise will be at 7:23 am and sunset at 6:27 pm (PDT).
In Petaluma, California, tomorrow, there will be 11h and 4min of daylight.
