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  • Coastal Flood Advisory

    Ends in 5 days 5 h

    When
    From 8 AM Saturday to 3 PM PDT Thursday.
    Where
    Bay Shoreline locations of San Francisco Bay, Monterey Bay and Big Sur Coast.

    Issued for this forecast zone · National Weather Service San Francisco CA

    What, impacts and precautions

    What

    Up to 1.9ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways.

    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.

    Additional details

    At the San Francisco tidal gauge, high tide is expected to be 1.1 ft above normal (6.9 ft MLLW) at 10:39 AM Saturday 10/24, 1.5 ft above normal (7.3 ft MLLW) at 11:07 AM Sunday 10/25, 1.6 ft above normal (7.4 ft MLLW) at 11:39 AM Monday 10/26, 1.8 ft above normal (7.6 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, and 1.7 ft above normal (7.5 ft MLLW) at 01:43 PM Thursday 10/29. These predictions include up to 1.0 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 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.

    Areas: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast

    See it on weather.gov (opens in a new tab)

Observed 8:35 AM PDT at KSTS

Petaluma Center, CA weather

Sunny and 48°9°, jacket by 7 PM.

Today: low 42°6° (likely 42°6° to 47°8°), high 73°23° (likely 71°22° to 74°23°).

Forecasts agree

Now 48°9°

Sunny · Feels like 45°7°

Wind
7 mph11 km/h
From the northwest. Up to 9 mph14 km/h through 9 PM
Dew point
46°8°
Comfortable
Humidity
93%
Air 48°9°, dew point 46°8° · fog or dew likely
UV index
1Low
Moderate 11 AM–5 PM · peak 5
Air quality
28Good
Main pollutant: PM2.5 (fine particles)
Pressure
30.07 inHg1018 hPa
Steady over the last 3 h

Next 2 hours

No precipitation expected in the next 2 hours.

Next 48 hours

4°2° cooler than this time yesterday (48°9° then, 45°7° now)

Good hours for
  • Above 60°16° today by 11 AM
  • Below 60°16° tonight after 7 PM
  • Fog tonight midnight–5 AM
  • Fog tomorrow 6–10 AM
  • Fog Monday from 4 AM
  1. This morningUp to 62°17° by 11 AM · Clear
  2. This afternoonUp to 72°22° by 3 PM · Clear
  3. TonightDown to 44°7° by 5 AM · Partly cloudy
  4. Tomorrow morningUp to 60°16° by 11 AM · Mostly cloudy
  5. Tomorrow afternoonUp to 69°21° by 3 PM · Cloudy
  6. Tomorrow nightDown to 45°7° by 5 AM · Partly cloudy
  7. Monday morningNear 45°7° · Partly cloudy
Hourly forecast, next 48 hours, in the place's local time
HourConditionsTemperatureFeels likePrecipitationWindHumidityCloud coverUV index
Sat 9aSunny49°9° (likely 46°8° to 54°12°)49°9°0%1 mph2 km/h from E, gusts 4 mph6 km/h68%4%1
Sat 10aSunny56°13° (likely 54°12° to 62°17°)56°13°0%1 mph2 km/h from NNE, gusts 3 mph5 km/h61%1%2
Sat 11aSunny62°17° (likely 62°17° to 68°20°)63°17°0%1 mph2 km/h from NNW, gusts 2 mph4 km/h48%0%3
Sat 12pSunny68°20° (likely 67°19° to 72°22°)68°20°0%1 mph2 km/h from NW, gusts 3 mph5 km/h40%0%4
Sat 1pSunny70°21° (likely 70°21° to 74°23°)70°21°0%2 mph3 km/h from W, gusts 6 mph9 km/h37%0%5
Sat 2pSunny71°22° (likely 71°22° to 73°23°)71°22°0%5 mph8 km/h from W, gusts 9 mph15 km/h37%0%5
Sat 3pSunny72°22° (likely 69°21° to 72°22°)72°22°0%7 mph11 km/h from W, gusts 11 mph18 km/h44%0%4
Sat 4pSunny68°20° (likely 67°19° to 70°21°)68°20°0%9 mph14 km/h from W, gusts 12 mph20 km/h50%0%3
Sat 5pSunny65°18° (likely 64°18° to 67°19°)65°18°0%9 mph14 km/h from W, gusts 13 mph20 km/h60%0%2
Sat 6pClear61°16° (likely 60°16° to 63°17°)61°16°0%7 mph11 km/h from WSW, gusts 11 mph17 km/h74%1%1
Sat 7pClear54°12° (likely 54°12° to 59°15°)54°12°0%3 mph5 km/h from WSW, gusts 9 mph14 km/h89%7%0
Sat 8pClear52°11° (likely 52°11° to 56°13°)52°11°0%1 mph2 km/h from WSW, gusts 5 mph9 km/h96%22%0
Sat 9pClear51°11° (likely 51°11° to 54°12°)51°11°0%1 mph2 km/h from WSW, gusts 4 mph7 km/h96%12%0
Sat 10pClear50°10° (likely 50°10° to 53°12°)50°10°0%1 mph2 km/h from WSW, gusts 4 mph6 km/h96%17%0
Sat 11pClear49°9° (likely 48°9° to 52°11°)49°9°0%0 mph0 km/h, gusts 4 mph6 km/h96%20%0
Sun 12aFog49°9° (likely 47°8° to 52°11°)49°9°0%0 mph0 km/h, gusts 4 mph6 km/h95%65%0
Sun 1aFog48°9° (likely 47°8° to 51°11°)48°9°0%0 mph0 km/h, gusts 3 mph5 km/h96%83%0
Sun 2aFog47°8° (likely 46°8° to 50°10°)47°8°0%0 mph0 km/h, gusts 3 mph4 km/h96%90%0
Sun 3aFog45°7° (likely 45°7° to 50°10°)45°7°0%0 mph0 km/h, gusts 2 mph4 km/h94%85%0
Sun 4aFog45°7° (likely 45°7° to 49°9°)45°7°0%1 mph2 km/h from SE, gusts 2 mph3 km/h93%86%0
Sun 5aPartly cloudy44°7° (likely 44°7° to 48°9°)44°7°0%1 mph2 km/h from ENE, gusts 2 mph3 km/h93%93%0
Sun 6aFog43°6° (likely 43°6° to 47°8°)43°6°0%1 mph2 km/h from ENE, gusts 2 mph4 km/h93%88%0
Sun 7aFog43°6° (likely 43°6° to 46°8°)43°6°0%1 mph2 km/h from ENE, gusts 1 mph2 km/h93%90%0
Sun 8aFog43°6° (likely 43°6° to 47°8°)43°6°0%2 mph3 km/h from ENE, gusts 2 mph3 km/h93%83%0
Sun 9aFog46°8° (likely 46°8° to 51°11°)46°8°0%2 mph3 km/h from ENE, gusts 2 mph3 km/h96%70%1
Sun 10aCloudy53°12° (likely 53°12° to 57°14°)53°12°0%2 mph3 km/h from ENE, gusts 4 mph7 km/h85%72%2
Sun 11aCloudy60°16° (likely 59°15° to 62°17°)60°16°0%2 mph3 km/h from SSE, gusts 5 mph8 km/h66%71%3
Sun 12pCloudy65°18° (likely 63°17° to 66°19°)65°18°0%2 mph3 km/h from SSE, gusts 6 mph10 km/h56%83%4
Sun 1pCloudy68°20° (likely 66°19° to 69°21°)68°20°0%2 mph3 km/h from SSE, gusts 7 mph11 km/h49%87%4
Sun 2pCloudy68°20° (likely 66°19° to 69°21°)69°21°0%6 mph10 km/h from WSW, gusts 9 mph14 km/h49%86%4
Sun 3pCloudy69°21° (likely 65°18° to 69°21°)69°21°0%6 mph10 km/h from WSW, gusts 11 mph17 km/h54%88%3
Sun 4pCloudy66°19° (likely 64°18° to 66°19°)66°19°0%6 mph10 km/h from WSW, gusts 11 mph18 km/h58%87%3
Sun 5pCloudy64°18° (likely 61°16° to 64°18°)64°18°0%7 mph11 km/h from WSW, gusts 11 mph17 km/h66%90%1
Sun 6pCloudy60°16° (likely 58°14° to 60°16°)60°16°0%7 mph11 km/h from WSW, gusts 10 mph16 km/h78%85%0
Sun 7pCloudy56°13° (likely 54°12° to 58°14°)56°13°0%7 mph11 km/h from WSW, gusts 10 mph16 km/h89%89%0
Sun 8pFog52°11° (likely 52°11° to 56°13°)52°11°0%1 mph2 km/h from W, gusts 10 mph16 km/h96%74%0
Sun 9pClear50°10° (likely 50°10° to 54°12°)50°10°0%1 mph2 km/h from W, gusts 10 mph16 km/h99%30%0
Sun 10pClear50°10° (likely 50°10° to 53°12°)50°10°0%1 mph2 km/h from W, gusts 12 mph20 km/h98%27%0
Sun 11pClear50°10° (likely 50°10° to 52°11°)50°10°0%1 mph2 km/h from W, gusts 13 mph22 km/h97%18%0
Mon 12aClear49°9° (likely 48°9° to 52°11°)49°9°0%1 mph2 km/h from W, gusts 11 mph18 km/h98%23%0
Mon 1aClear48°9° (likely 48°9° to 52°11°)48°9°0%1 mph2 km/h from W, gusts 11 mph17 km/h99%32%0
Mon 2aClear48°9° (likely 47°8° to 52°11°)48°9°0%1 mph2 km/h from W, gusts 10 mph15 km/h100%38%0
Mon 3aClear47°8° (likely 46°8° to 52°11°)47°8°0%1 mph2 km/h from W, gusts 9 mph14 km/h100%37%0
Mon 4aFog46°8° (likely 45°7° to 52°11°)46°8°0%1 mph2 km/h from W, gusts 7 mph11 km/h100%46%0
Mon 5aFog45°7° (likely 45°7° to 51°11°)45°7°0%1 mph2 km/h from WNW, gusts 4 mph7 km/h100%57%0
Mon 6aFog44°7° (likely 44°7° to 52°11°)44°7°0%1 mph2 km/h from WNW, gusts 2 mph3 km/h100%61%0
Mon 7aFog44°7° (likely 44°7° to 51°11°)44°7°0%1 mph2 km/h from WNW, gusts 2 mph3 km/h100%64%0
Mon 8aFog45°7° (likely 45°7° to 50°10°)45°7°0%1 mph2 km/h from WNW, gusts 2 mph3 km/h100%50%0

Days ahead

Shaded: typical range for these dates (1991–2020)
  1. Today, Oct 24. Sunny. High 73°23°, low 42°6°. Typical 74°23° / 46°8°. Dry. Forecasts agree. Best day outdoors this week.
    1. Morning

      6 AM–noon

      Sunny, 62°17°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 72°22°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 52°11°

      Dry

    4. Overnight

      midnight–6 AM

      Fog, 44°7°

      Dry

    Official NWS forecast

    Today: Sunny. High near 73, with temperatures falling to around 65 in the afternoon. Northwest wind 1 to 9 mph.

    Tonight: Patchy fog between 8pm and 5am. Mostly clear. Low around 42, with temperatures rising to around 44 overnight. Southwest wind 0 to 7 mph.

    Forecasts agreeIndependent forecasts are close; the range is narrow.

    Best day outdoors this week: the one dry, mild day the forecasts agree on (high 73°23°).

    High, likely
    71°22°–74°23°
    Low, likely
    42°6°–47°8°
    Typical high / low
    74°23° / 46°8°
    Wind
    10 mph17 km/h, gusts 21 mph33 km/h
    UV peak
    5
  2. Tomorrow, Oct 25. Fog. High 71°22°, low 43°6°. Typical 74°23° / 46°8°. Dry. Mostly agree.
    1. Morning

      6 AM–noon

      Fog, 43°6°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 69°21°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 52°11°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 45°7°

      Dry

    Official NWS forecast

    Day: Patchy fog before 10am. Mostly sunny. High near 71, with temperatures falling to around 64 in the afternoon. South southwest wind 1 to 7 mph.

    Night: Areas of fog after 8pm. Partly cloudy, with a low around 43. West wind 1 to 7 mph.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    67°19°–71°22°
    Low, likely
    43°6°–46°8°
    Typical high / low
    74°23° / 46°8°
    Wind
    11 mph17 km/h, gusts 24 mph38 km/h
    UV peak
    4
  3. Monday, Oct 26. Fog. High 65°18°, low 41°5°. Typical 74°23° / 46°8°. Dry. Forecasts agree.
    1. Morning

      6 AM–noon

      Sunny, 45°7°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 65°19°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 54°12°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 44°7°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Areas of fog before 10am. Mostly sunny, with a high near 65. West northwest wind 1 to 14 mph, with gusts as high as 23 mph.

    Night: Patchy fog after 2am. Mostly clear, with a low around 41.

    Forecasts agreeIndependent forecasts are close; the range is narrow.

    High, likely
    65°18°–66°19°
    Low, likely
    41°5°–49°9°
    Typical high / low
    74°23° / 46°8°
    Wind
    13 mph21 km/h, gusts 27 mph44 km/h
    UV peak
    5
  4. Tuesday, Oct 27. Fog. High 65°18°, low 42°6°. Typical 73°23° / 46°8°. Dry. Mostly agree.
    1. Morning

      6 AM–noon

      Sunny, 42°6°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 66°19°

      Dry

    3. Evening

      6 PM–midnight

      Mostly clear, 53°12°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 44°7°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Patchy fog before 10am. Mostly sunny, with a high near 65.

    Night: Areas of fog after 11pm. Partly cloudy, with a low around 42.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    64°18°–67°19°
    Low, likely
    40°4°–45°7°
    Typical high / low
    73°23° / 46°8°
    Wind
    10 mph17 km/h, gusts 22 mph35 km/h
    UV peak
    4
  5. Wednesday, Oct 28. Fog. High 65°18°, low 44°7°. Typical 73°23° / 46°8°. Dry. Forecasts differ.
    1. Morning

      6 AM–noon

      Mostly sunny, 45°7°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 65°18°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 54°12°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 50°10°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Areas of fog before 10am. Partly sunny, with a high near 65.

    Night: Areas of fog after 8pm. Mostly cloudy, with a low around 44.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    63°17°–68°20°
    Low, likely
    41°5°–46°8°
    Typical high / low
    73°23° / 46°8°
    Wind
    10 mph16 km/h, gusts 19 mph30 km/h
    UV peak
    4
  6. Thursday, Oct 29. Cloudy. High 63°17°, low 44°7°. Typical 72°22° / 46°8°. Rain, 20% chance. Mostly agree.
    1. Morning

      6 AM–noon

      Cloudy, 50°10°

      Dry

    2. Afternoon

      noon–6 PM

      Mostly sunny, 63°17°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 53°12°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 44°7°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Patchy fog before 10am, then a slight chance of rain. Partly sunny, with a high near 63.

    Night: A chance of rain. Mostly cloudy, with a low around 44.

    Mostly agreeIndependent forecasts are fairly close; small surprises are possible.

    High, likely
    62°17°–65°18°
    Low, likely
    44°7°–50°10°
    Typical high / low
    72°22° / 46°8°
    Wind
    15 mph25 km/h, gusts 31 mph49 km/h
    UV peak
    4
  7. Friday, Oct 30. Rain. High 63°17°, low 43°6°. Typical 72°22° / 45°7°. Rain 0.01 in0.3 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Sunny, 45°7°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 62°17°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 52°11°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 43°6°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: A chance of rain. Partly sunny, with a high near 63.

    Night: A chance of rain. Mostly cloudy, with a low around 43.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    60°16°–64°18°
    Low, likely
    40°4°–44°7°
    Typical high / low
    72°22° / 45°7°
    Wind
    10 mph17 km/h, gusts 25 mph41 km/h
    UV peak
    4
  8. Saturday, Oct 31. Partly sunny. High 62°17°, low 41°5°. Typical 72°22° / 45°7°. Dry. Forecasts differ.
    1. Morning

      6 AM–noon

      Sunny, 43°6°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 62°17°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 50°10°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 40°5°

      Dry

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    58°14°–68°20°
    Low, likely
    36°2°–46°8°
    Typical high / low
    72°22° / 45°7°
    Wind
    12 mph20 km/h, gusts 24 mph39 km/h
    UV peak
    4
  9. Sunday, Nov 1. Sunny. High 66°19°, low 40°4°. Typical 71°22° / 45°7°. Dry. Forecasts differ.
    1. Morning

      6 AM–noon

      Sunny, 42°6°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 67°19°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 52°11°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 45°7°

      Dry

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    59°15°–76°24°
    Low, likely
    33°1°–43°6°
    Typical high / low
    71°22° / 45°7°
    Wind
    16 mph25 km/h, gusts 31 mph49 km/h
    UV peak
    4
  10. Monday, Nov 2. Cloudy. High 65°18°, low 46°8°. Typical 71°22° / 45°7°. Dry. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 52°11°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 67°19°

      Dry

    3. Evening

      6 PM–midnight

      Mostly clear, 52°11°

      Dry

    Hours this far out come from computer models only.

    The National Weather Service writes about seven days ahead; this day is our model forecast only.

    Forecasts differIndependent forecasts disagree; expect changes and plan for the range.

    High, likely
    59°15°–73°23°
    Low, likely
    41°5°–51°11°
    Typical high / low
    71°22° / 45°7°
    Wind
    9 mph14 km/h, gusts 25 mph41 km/h
    UV peak
    3

The outlook

  1. Today

    Dry, high 73°, low 42°.

  2. Tomorrow

    Dry, high 71°, low 43°.

  3. Monday

    Dry, high 65°, low 41°, cooling off.

  4. Rest of week

    Mostly dry, highs 62–66°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (MTR) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue
Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Laguna de Santa Rosa at Stony Point Road NR Cotati

7.4 mi
Below flood stage
Level
73.4 ft
Flow
1 cfs

Forecast peak 73.0 ft Sat 8 AM

Reading from Sat 7:30 AM · NWS gauge page

Walker Creek (Marin) near Marshall

5.4 mi
Below flood stage
Level
0.9 ft
Flow
5 cfs

Reading from Sat 7:15 AM · NWS gauge page

Wiggins Creek at Rainsville Road

5.8 mi
Below flood stage
Level
35.4 ft

Reading from Sat 7 AM · NWS gauge page

Willow Brook at Stony Point Road

6.3 mi
Below flood stage
Level
31.0 ft

Reading from Sat 6:37 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 42% less heating than a typical week.

This week 23Typical 39

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F
14
h below 17°F
0
h below 5°F
0

47, 17 and 5°F are the test points heat pumps are rated at.

Comfort

Dry air outside (dew point 46°F).

Open the windows?

Today, 11:00 AM–6:00 PM

Good stretch to open the windows.

Is this typical?

PETALUMA AIRPORT · official normals 1991–2020 · records 1893–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Normal high / low
74°23° / 46°8°
Forecast high / low
73°23° / 42°6°
Record high
93°34° in 1965
Record low
33°1° in 1935

Last 7 days vs normal

On average 3°1° colder than normal (daily mean temperature).

  1. —SunOct 18
  2. —MonOct 19
  3. —TueOct 20
  4. −4°−2°WedOct 21
  5. −2°−1°ThuOct 22
  6. −1°FriOct 23
  7. —SatOct 24

Petaluma Center weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Sunrise 7:29 AM, sunset 6:20 PM.

Daylight
10 h 52 min
Losing 2 min 16 s a day; shortest Dec 21, 1 h 22 min less
Golden hour
5:44–6:37 PM
Morning 7:12–8:05 AM
Blue hour
6:37–6:47 PM
Morning 7:02–7:12 AM; first light 7:02 AM

Stars tonight? Fair

Mostly clear 6:47 PM–12 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today
sets 5:50 AM · rises 5:20 PM
Full moon
Oct 25
New moon
Nov 8
Looking northeast from Petaluma Center. The highest point on the skyline is about 4,700 ft, 38 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.