Petaluma, CA 94953 Monthly Weather

Sonoma County2:32 PM PDT38.23°N, 122.64°W
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October 2026

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188°/48°Avg 80°/50°
290°/51°Avg 80°/50°
397°/54°Avg 80°/50°
4Avg 80°/49°
5Avg 79°/49°
6Avg 79°/49°
790°/51°Avg 79°/49°
890°/50°Avg 79°/49°
979°/54°Avg 78°/49°
1069°/57°Avg 78°/49°
11Avg 78°/48°
12Avg 78°/48°
13Avg 78°/48°
1480°/42°Avg 77°/48°
1587°/45°Avg 77°/48°
1690°/47°Avg 77°/48°
1790°/46°Avg 76°/48°
18Avg 76°/47°
19Avg 76°/47°
20Avg 76°/47°
21 Chance Rain Showers 73°/50°Avg 75°/47°
22 Areas Of Fog then Rain Showers Likely 67°/45°Avg 75°/47°
23 Areas Of Fog then Mostly Sunny 73°/39°Avg 74°/46°
24 Sunny 76°/41°Avg 74°/46°
25 Patchy Fog then Mostly Sunny 74°/42°Avg 74°/46°
26 Areas Of Fog then Mostly Sunny 72°/42°Avg 74°/46°
27 Areas Of Fog then Mostly Sunny 72°/43°Avg 73°/46°
28 Partly cloudy 72°/45°Avg 73°/46°
29 Cloudy 74°/50°Avg 72°/46°
30Avg 72°/45°
31Avg 72°/45°
Average high86° (normal 78°)
Average low50° (normal 49°)
Warmest / coldest97° / 42°
Precipitation0.00 in (normal 0.33 in to date)
Record high today91° (1929)
Record low today33° (1925)

Observed: Petaluma Airport, 4 km away, records since 1893. Normals 1991–2020. Climate data from NOAA's Regional Climate Centers (ACIS); recent days are preliminary. Days ahead: the forecast.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.