Nearby Harbors
38.1117’ N, 122.4980’ W

Petaluma River entrance, CA

46°
H 70°
L 43°
NW
2mph
Low tide
8:09 am
Photo Credits

Petaluma River entrance, CA Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Tue
Oct 27 		Mostly Sunny
Close Hourly 		70º / 43º 2% WNW 8 mph 67%
7am Clear 46º 2% NW 2 mph 100%
8am Sunny 46º 2% NW 2 mph 100%
9am Sunny 49º 2% NNW 3 mph 92%
10am Mostly Sunny 55º 1% NNW 4 mph 77%
11am Mostly Sunny 60º 0% NW 4 mph 66%
12pm Mostly Sunny 63º 0% NW 3 mph 56%
1pm Mostly Sunny 65º 0% ESE 3 mph 52%
2pm Mostly Sunny 67º 0% SSE 4 mph 48%
3pm Mostly Sunny 69º 0% SSW 7 mph 46%
4pm Partly Cloudy 69º 0% SW 8 mph 45%
5pm Mostly Sunny 68º 0% WSW 8 mph 47%
6pm Sunny 64º 1% WNW 7 mph 59%
7pm Clear 60º 3% WNW 7 mph 68%
8pm Clear 57º 3% NW 5 mph 74%
9pm Clear 55º 3% NW 5 mph 77%
10pm Clear 53º 4% NNW 3 mph 81%
11pm Clear 52º 4% NNW 3 mph 84%
Wed
Oct 28 		Mostly Sunny
View Hourly 		73º / 46º 4% NNE 7 mph 58%
12am Clear 51º 4% NNW 2 mph 85%
1am Clear 49º 4% NNW 2 mph 88%
2am Clear 48º 5% N 1 mph 91%
3am Clear 47º 5% N 2 mph 94%
4am Clear 46º 5% N 2 mph 94%
5am Clear 46º 5% N 2 mph 94%
6am Clear 45º 4% NNW 2 mph 94%
7am Clear 45º 4% NNW 2 mph 94%
8am Sunny 44º 4% NNW 2 mph 98%
9am Sunny 49º 2% N 2 mph 88%
10am Sunny 55º 1% NE 1 mph 73%
11am Mostly Sunny 62º 0% NE 1 mph 58%
12pm Mostly Sunny 66º 0% ENE 2 mph 46%
1pm Partly Cloudy 69º 0% E 3 mph 40%
2pm Partly Cloudy 71º 0% SE 4 mph 38%
3pm Mostly Sunny 72º 0% S 5 mph 36%
4pm Partly Cloudy 71º 0% SW 6 mph 37%
5pm Partly Cloudy 70º 0% WSW 7 mph 39%
6pm Partly Cloudy 66º 0% WNW 6 mph 48%
7pm Partly Cloudy 60º 1% WNW 6 mph 63%
8pm Partly Cloudy 57º 3% NNW 4 mph 72%
9pm Partly Cloudy 55º 4% NNW 3 mph 78%
10pm Partly Cloudy 53º 4% N 2 mph 84%
11pm Partly Cloudy 52º 5% N 1 mph 84%
Thu
Oct 29 		Cloudy
View Hourly 		71º / 44º 6% ESE 6 mph 62%
12am Mostly Cloudy 51º 5% NNE 1 mph 87%
1am Mostly Cloudy 50º 5% N 1 mph 89%
2am Mostly Cloudy 49º 5% NE 0 mph 91%
3am Mostly Cloudy 49º 5% NNE 1 mph 95%
4am Mostly Cloudy 48º 5% NNE 1 mph 94%
5am Cloudy 48º 5% NNE 1 mph 94%
6am Cloudy 48º 6% N 1 mph 95%
Fri
Oct 30 		Mostly Sunny 70º / 45º 7% WNW 11 mph 62%
Sat
Oct 31 		Partly Cloudy 68º / 44º 6% W 8 mph 60%
Sun
Nov 1 		Sunny 71º / 44º 8% NNW 8 mph 55%
Mon
Nov 2 		Partly Cloudy 72º / 47º 3% ENE 5 mph 51%
Tue
Nov 3 		Partly Cloudy 71º / 48º 20% ESE 7 mph 54%

Weather Radar for Petaluma River entrance, CA See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Petaluma River entrance, CA

Today
High : 61ºF
Variable winds 5 kt or less. Mostly sunny.
Tonight
Low : 47ºF
Variable winds 5 kt or less. Patchy fog after 2am.
Wednesday
High : 63ºF
Variable winds 5 kt or less. Patchy fog before 10am.
Wednesday Night
Low : 50ºF
Variable winds 5 kt or less. Patchy fog after 3am.
Thursday
High : 61ºF
Variable winds 5 kt or less. Patchy fog before 10am.
Thursday Night
Low : 47ºF
Variable winds 5 kt or less. Mostly cloudy.
Friday
High : 59ºF
Variable winds less than 5 kt becoming W 5 to 9 kt in the afternoon. Sunny.
Friday Night
Low : 45ºF
W wind 5 to 9 kt becoming variable and less than 5 kt in the evening. Partly cloudy.
Saturday
High : 59ºF
Variable winds less than 5 kt becoming W around 6 kt in the afternoon. Partly sunny.

NOAA Buoy Data Near Petaluma River entrance, CA See Map

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    Wind Speed Forecast for Petaluma River entrance, CA

    TuesdayWednesdayThursday
    Wind Speed (MPH) 247732215611
    2pm6pm10pm2am6am10am2pm6pm10pm2am6am10am
    MPH 247732215611
    DIR NWNWSSWWNWNNWNNNWNESWNWNNNE

    Current Weather Conditions In Petaluma River entrance, CA

    As Of: 2 minutes ago

    • 46ºF
    • 46ºF
    • 2mph
    • 0º (NW)
    • 2mph
    • Clear
    • 10mi
    • 30.06"
    • 100%
    • 0ºF

    The weather right now in Petaluma River entrance, CA is Clear. The current temperature is 46°F, and the expected high and low for today, Tuesday, October 27, 2026, are 70° high temperature and 43°F low temperature. The wind is currently blowing at 2 miles per hour, and coming from the Northwest. The wind is gusting to 2 mph. With the wind and the atmosphere the temperature feels like 46° Fahrenheit. Expected precipitation is 2 percent, with current humidity at 100 percent, and air pressure at 30.06 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Coastal Flood Advisory - 5:41am Tue Oct 27 2026

    ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 5 PM PDT FRIDAY...

    WHAT: Up to 2.1 ft of inundation above ground level is
    possible in low-lying areas near shorelines and tidal
    waterways.

    WHERE: Bay Shoreline locations of San Pablo Bay, San
    Francisco Bay, and Monterey Bay.

    WHEN: Until 5 PM PDT Friday.

    IMPACTS: High tides will result in flooding of low-lying
    infrastructure, isolated road closures, and coastal erosion.
    Rising tides will bring water and waves farther up the beach
    than normal, restricting escape from beaches and coastal
    areas. More substantial impacts are expected along bayshore
    Marin County where increased flooding is anticipated across
    low lying areas.

    ADDITIONAL DETAILS: At the San Francisco tidal gauge, high
    tide is expected to be 2.1 ft above normal (7.9 ft MLLW) at
    12:15 PM Tuesday 10/27, 1.9 ft above normal (7.7 ft MLLW) at
    12:56 PM Wednesday 10/28, 1.7 ft above normal (7.5 ft MLLW) at
    01:43 PM Thursday 10/29, and 1.6 ft above normal (7.4 ft MLLW)
    at 02:39 PM Friday 10/30. These predictions include up to 1.2
    ft of surge that will enhance the astronomical tide and
    flooding threat. High tide varies up to 90 minutes earlier or
    later along the Pacific Coast and through the San Francisco
    Bay, respectively.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    If travel is required, allow extra time as some roads may be
    closed. Do not drive around barricades or through water of
    unknown depth. Take the necessary actions to protect flood-prone
    property.

    &&

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