Weather forecast for todayPetaluma, CA

Weather forecast for today

Current condition 8:01 am PST

  • 48°F
  • Feels like:
    48°F
Fog
Fog
  • Precipitation: 0"
  • Wind: 2mphNNE 20°
  • Humidity: 100%
  • Dewpoint: 48°F
  • Pressure: 30.08"Hg
  • Visibility: 1mi
  • UV index: 0
  • ▼
Currently, cold air mixing with moisture is causing widespread fog to develop.
The temperature is a frosty 48.2°F. The current temperature is far from the maximum of 73.4°F anticipated for today.

Friday Oct 23, 2026

  • 73°F
  • 43°F
AM Fog / PM Sun
AM Fog / PM Sun
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 9mphNW 311°
  • Humidity: 69%
  • UV index: 4
  • Sunrise: 7:27 am PDT
  • Sunset: 6:21 pm PDT
  • ▼
On Friday, October 23, early foggy conditions will improve as the sun takes over in the afternoon.
Temperature values will vary noticeably, extending from a temperate 73.4°F to a frosty 42.8°F.
October's typical peak of 71.2°F is anticipated to be mirrored in the day’s high.
Sunrise was at 7:27 am and sunset will be at 6:21 pm; the daylight will last for 10h and 55min.

Hourly overview

Hourly temperatures

Warmest period: 2 pm - 4 pm 70°C.
Coldest hour: 12 am 50°C.

Chance of precipitation

Highest chance: 10 am 15%.

Hourly weather forecast

  • 10 am
  • 54°F
  • Feels like:
    54°F
Cloudy
Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 3mphNW 321°
  • Humidity: 95%
  • Pressure: 30.06"Hg
  • Visibility: 1mi
  • UV index: 1
  • ▼
  • 11 am
  • 59°F
  • Feels like:
    59°F
Cloudy
Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 4mphNNW 331°
  • Humidity: 81%
  • Pressure: 30.06"Hg
  • Visibility: 2mi
  • UV index: 2
  • ▼
  • 12 pm
  • 63°F
  • Feels like:
    63°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphNW 325°
  • Humidity: 68%
  • Pressure: 30.06"Hg
  • Visibility: 4mi
  • UV index: 4
  • ▼
  • 1 pm
  • 68°F
  • Feels like:
    68°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphNNW 336°
  • Humidity: 59%
  • Pressure: 30.06"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 70°F
  • Feels like:
    70°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphNNW 332°
  • Humidity: 51%
  • Pressure: 30.03"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 3 pm
  • 72°F
  • Feels like:
    72°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphNW 307°
  • Humidity: 47%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 70°F
  • Feels like:
    70°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphW 281°
  • Humidity: 50%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 5 pm
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphW 274°
  • Humidity: 49%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 pm
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphW 272°
  • Humidity: 52%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:21 pm
  • 7 pm
  • 61°F
  • Feels like:
    61°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 5mphWNW 285°
  • Humidity: 64%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 55°F
  • Feels like:
    55°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 3mphNW 318°
  • Humidity: 74%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 54°F
  • Feels like:
    54°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 2mphNW 325°
  • Humidity: 79%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 52°F
  • Feels like:
    52°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 2mphNW 323°
  • Humidity: 78%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 52°F
  • Feels like:
    52°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 2mphNNW 329°
  • Humidity: 76%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, a combination of sunny and cloudy weather is anticipated.
The temperature will be between the lowest temperature of 51.8°F and the highest temperature of 71.6°F. The warmest part of the day is expected around 3 pm.
The forecasted high will be close to the typical October maximum of 71.2°F. The lowest temperature is more close to November's average minimum of 47.3°F than the usual minimum of 52.7°F in October.
Updated: Oct 23, 2026 @ 16:01:33 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (8:01 am PST) it is 48.2°F in Petaluma.

On Friday, expect a foggy and damp morning, followed by a clear, sunny afternoon.

Today, the maximum temperature will be 73.4°F, while the minimum temperature will be 42.8°F.
The maximum temperature will be in line with the average highest temperature of 71.2°F in October. The lowest temperature will be significantly lower than the average low of 52.7°F.

On Friday, in Petaluma, sunrise was at 7:27 am and sunset will be at 6:21 pm (PDT).

Today, the daylight will last for 10h and 55min.