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1 active weather alert

  • Coastal Flood Advisory

    Starts in 10 h 54 min

    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, 1.4 ft above normal (7.2 ft MLLW) at 11:07 AM Sunday 10/25, 1.7 ft above normal (7.5 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 8:45 PM PDT at KSTS

Sebastopol, CA weather

Clear and 55°13°.

Today: low 42°6° (likely 42°6° to 49°9°), high 71°22° (likely 69°21° to 74°23°).

Mostly agree

Now 55°13°

Clear

Wind
3 mph5 km/h
From the west. Light through 9 AM
Dew point
48°9°
Comfortable · down to 39°4° by 2 AM
UV tomorrow
5Moderate
Moderate 11 AM–5 PM · peak 5
Air quality
33Good
Main pollutant: PM2.5 (fine particles)
Pressure
30.04 inHg1017 hPa
Rising slowly · +0.02 inHg+0.7 hPa in 3 h

Next 2 hours

No precipitation expected in the next 2 hours.

Next 48 hours

Good hours for
  • Above 60°16° tomorrow by 11 AM
  • Drops 13°7° tomorrow 5–8 PM (69°21° → 56°13°)
  • Below 60°16° tomorrow night after 7 PM
  • Fog tomorrow night midnight–1 AM
  • Fog Sunday 6–8 AM
  1. TonightDown to 42°6° by 5 AM · Clear
  2. Tomorrow morningUp to 63°17° by 11 AM · Clear
  3. Tomorrow afternoonUp to 74°23° by 2 PM · Clear
  4. Tomorrow nightDown to 41°5° by 5 AM · Partly cloudy
  5. Sunday morningUp to 62°17° by 11 AM · Mostly cloudy
  6. Sunday afternoonUp to 73°23° by 3 PM · Mostly cloudy
  7. Sunday nightDown to 53°12° by 8 PM · Mostly cloudy
Hourly forecast, next 48 hours, in the place's local time
HourConditionsTemperatureFeels likePrecipitationWindHumidityCloud coverUV index
Fri 9pClear52°11° (likely 52°11° to 56°13°)52°11°0%1 mph2 km/h from NW, gusts 4 mph7 km/h84%0%0
Fri 10pClear51°11° (likely 50°10° to 54°12°)51°11°0%2 mph3 km/h from WNW, gusts 3 mph5 km/h83%0%0
Fri 11pClear49°9° (likely 48°9° to 52°11°)48°9°0%3 mph5 km/h from NW, gusts 2 mph4 km/h85%9%0
Sat 12aClear48°9° (likely 46°8° to 52°11°)47°8°0%3 mph5 km/h from NW, gusts 3 mph5 km/h83%13%0
Sat 1aClear48°9° (likely 45°7° to 52°11°)48°9°0%2 mph3 km/h from NNW, gusts 3 mph5 km/h79%12%0
Sat 2aClear46°8° (likely 43°6° to 51°11°)46°8°0%2 mph3 km/h from NNW, gusts 3 mph5 km/h76%13%0
Sat 3aClear45°7° (likely 42°6° to 50°10°)45°7°0%2 mph3 km/h from NNW, gusts 3 mph5 km/h74%12%0
Sat 4aClear44°7° (likely 42°6° to 50°10°)44°7°0%1 mph2 km/h from NNW, gusts 3 mph4 km/h74%11%0
Sat 5aClear42°6° (likely 41°5° to 49°9°)42°6°0%1 mph2 km/h from NW, gusts 3 mph5 km/h72%11%0
Sat 6aClear42°6° (likely 40°4° to 49°9°)42°6°0%1 mph2 km/h from NW, gusts 3 mph5 km/h75%10%0
Sat 7aSunny42°6° (likely 39°4° to 48°9°)42°6°0%1 mph2 km/h from NW, gusts 3 mph5 km/h75%10%0
Sat 8aSunny42°6° (likely 39°4° to 49°9°)42°6°0%1 mph2 km/h from NNW, gusts 4 mph6 km/h74%10%0
Sat 9aSunny48°9° (likely 44°7° to 53°12°)49°9°0%1 mph2 km/h from N, gusts 4 mph6 km/h70%1%1
Sat 10aSunny56°13° (likely 54°12° to 61°16°)56°13°0%0 mph0 km/h, gusts 4 mph7 km/h60%0%2
Sat 11aSunny63°17° (likely 62°17° to 69°21°)63°17°0%0 mph0 km/h, gusts 4 mph6 km/h49%0%3
Sat 12pSunny69°21° (likely 68°20° to 74°23°)69°21°0%0 mph0 km/h, gusts 3 mph5 km/h40%0%4
Sat 1pSunny72°22° (likely 71°22° to 77°25°)72°22°0%1 mph2 km/h from W, gusts 5 mph8 km/h34%0%5
Sat 2pSunny74°23° (likely 71°22° to 80°27°)74°23°0%2 mph3 km/h from WSW, gusts 6 mph10 km/h32%0%5
Sat 3pSunny74°23° (likely 70°21° to 79°26°)74°23°0%6 mph10 km/h from WSW, gusts 11 mph18 km/h32%5%4
Sat 4pSunny72°22° (likely 68°20° to 77°25°)72°22°0%7 mph11 km/h from WSW, gusts 13 mph20 km/h36%32%3
Sat 5pSunny69°21° (likely 66°19° to 73°23°)69°21°0%6 mph10 km/h from WSW, gusts 13 mph21 km/h42%37%2
Sat 6pClear65°18° (likely 61°16° to 67°19°)65°18°0%2 mph3 km/h from SW, gusts 12 mph19 km/h53%40%1
Sat 7pClear56°13° (likely 56°13° to 61°16°)56°13°0%0 mph0 km/h, gusts 8 mph14 km/h68%39%0
Sat 8pClear53°12° (likely 53°12° to 57°14°)53°12°0%0 mph0 km/h, gusts 6 mph10 km/h80%47%0
Sat 9pClear50°10° (likely 50°10° to 55°13°)51°11°0%0 mph0 km/h, gusts 6 mph9 km/h87%27%0
Sat 10pClear49°9° (likely 49°9° to 53°12°)49°9°0%0 mph0 km/h, gusts 4 mph7 km/h88%25%0
Sat 11pClear48°9° (likely 47°8° to 52°11°)48°9°0%0 mph0 km/h, gusts 3 mph5 km/h92%26%0
Sun 12aFog47°8° (likely 46°8° to 52°11°)47°8°0%0 mph0 km/h, gusts 4 mph6 km/h93%33%0
Sun 1aMostly clear46°8° (likely 46°8° to 52°11°)47°8°0%0 mph0 km/h, gusts 3 mph4 km/h91%73%0
Sun 2aPartly cloudy45°7° (likely 45°7° to 51°11°)45°7°0%0 mph0 km/h, gusts 3 mph5 km/h92%71%0
Sun 3aPartly cloudy44°7° (likely 44°7° to 50°10°)44°7°0%0 mph0 km/h, gusts 3 mph5 km/h90%54%0
Sun 4aPartly cloudy43°6° (likely 43°6° to 50°10°)43°6°0%0 mph0 km/h, gusts 2 mph3 km/h91%67%0
Sun 5aMostly clear41°5° (likely 41°5° to 49°9°)41°5°0%0 mph0 km/h, gusts 2 mph3 km/h91%69%0
Sun 6aFog41°5° (likely 41°5° to 49°9°)41°5°0%0 mph0 km/h, gusts 2 mph4 km/h93%72%0
Sun 7aFog40°4° (likely 40°4° to 48°9°)41°5°0%0 mph0 km/h, gusts 2 mph3 km/h94%70%0
Sun 8aPartly sunny41°5° (likely 41°5° to 49°9°)41°5°0%1 mph2 km/h from NE, gusts 2 mph4 km/h91%77%0
Sun 9aPartly sunny47°8° (likely 45°7° to 52°11°)47°8°0%1 mph2 km/h from NE, gusts 3 mph4 km/h83%73%1
Sun 10aPartly sunny55°13° (likely 49°9° to 58°14°)55°13°0%1 mph2 km/h from NE, gusts 4 mph6 km/h71%68%2
Sun 11aCloudy62°17° (likely 56°13° to 63°17°)63°17°0%0 mph0 km/h, gusts 5 mph8 km/h60%68%3
Sun 12pCloudy67°19° (likely 62°17° to 67°19°)67°19°0%0 mph0 km/h, gusts 5 mph8 km/h51%71%4
Sun 1pPartly sunny71°22° (likely 65°18° to 71°22°)71°22°0%0 mph0 km/h, gusts 7 mph11 km/h44%76%4
Sun 2pPartly sunny72°22° (likely 65°18° to 72°22°)72°22°0%2 mph3 km/h from SSW, gusts 10 mph16 km/h40%81%4
Sun 3pCloudy73°23° (likely 63°17° to 73°23°)73°23°0%2 mph3 km/h from SSW, gusts 10 mph16 km/h39%85%4
Sun 4pCloudy71°22° (likely 62°17° to 71°22°)71°22°0%2 mph3 km/h from SSW, gusts 10 mph16 km/h42%89%3
Sun 5pCloudy68°20° (likely 60°16° to 68°20°)68°20°0%5 mph8 km/h from SW, gusts 9 mph15 km/h48%84%1
Sun 6pCloudy64°18° (likely 57°14° to 64°18°)64°18°0%5 mph8 km/h from SW, gusts 7 mph12 km/h58%83%1
Sun 7pPartly cloudy58°14° (likely 53°12° to 60°16°)58°14°0%5 mph8 km/h from SW, gusts 5 mph7 km/h70%86%0
Sun 8pPartly cloudy53°12° (likely 52°11° to 57°14°)53°12°0%0 mph0 km/h, gusts 4 mph7 km/h81%86%0

Days ahead

Shaded: typical range for these dates (1991–2020)
  1. Today, Oct 23. Fog. High 71°22°, low 42°6°. Typical 74°23° / 46°8°. Dry. Mostly agree.
    1. Evening

      6 PM–midnight

      Clear, 49°9°

      Dry

    2. Overnight

      midnight–6 AM

      Clear, 42°6°

      Dry

    Official NWS forecast

    Tonight: Clear, with a low around 42. Northwest wind around 3 mph.

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

    High, likely
    69°21°–74°23°
    Low, likely
    42°6°–49°9°
    Typical high / low
    74°23° / 46°8°
    Wind
    13 mph21 km/h
    UV peak
    5
  2. Tomorrow, Oct 24. Sunny. High 75°24°, low 41°5°. Typical 74°23° / 46°8°. Dry. Forecasts differ.
    1. Morning

      6 AM–noon

      Sunny, 42°6°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 74°23°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 53°12°

      Dry

    4. Overnight

      midnight–6 AM

      Partly cloudy, 41°5°

      Dry

    Official NWS forecast

    Day: Sunny. High near 75, with temperatures falling to around 69 in the afternoon. Northwest wind 0 to 7 mph.

    Night: Patchy fog between midnight and 1am. Mostly clear, with a low around 41. West northwest wind around 2 mph.

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

    High, likely
    71°22°–80°27°
    Low, likely
    39°4°–47°8°
    Typical high / low
    74°23° / 46°8°
    Wind
    11 mph18 km/h
    UV peak
    5
  3. Sunday, Oct 25. Fog. High 73°23°, low 41°5°. Typical 74°23° / 46°8°. Dry. Forecasts differ.
    1. Morning

      6 AM–noon

      Partly sunny, 41°5°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 73°23°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 53°12°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 47°8°

      Dry

    Official NWS forecast

    Day: Patchy fog before 8am. Mostly sunny, with a high near 73. North northwest wind 0 to 5 mph.

    Night: Areas of fog after midnight. Partly cloudy, with a low around 41. West northwest wind 0 to 5 mph.

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

    High, likely
    65°18°–73°23°
    Low, likely
    41°5°–48°9°
    Typical high / low
    74°23° / 46°8°
    Wind
    10 mph16 km/h, gusts 16 mph25 km/h
    UV peak
    4
  4. Monday, Oct 26. Fog. High 68°20°, low 40°4°. Typical 74°23° / 46°8°. Dry. Mostly agree.
    1. Morning

      6 AM–noon

      Sunny, 44°7°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 66°19°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 55°13°

      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 68.

    Night: Patchy fog after 2am. Partly cloudy, with a low around 40.

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

    High, likely
    64°18°–69°21°
    Low, likely
    40°4°–46°8°
    Typical high / low
    74°23° / 46°8°
    Wind
    12 mph19 km/h, gusts 23 mph37 km/h
    UV peak
    4
  5. Tuesday, Oct 27. Fog. High 68°20°, low 40°4°. Typical 73°23° / 46°8°. Dry. Forecasts agree.
    1. Morning

      6 AM–noon

      Sunny, 43°6°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 66°19°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 53°12°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 45°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 68.

    Night: Areas of fog after 9pm. Partly cloudy, with a low around 40.

    Forecasts agreeIndependent forecasts are close; the range is narrow.

    High, likely
    65°18°–68°20°
    Low, likely
    39°4°–47°8°
    Typical high / low
    73°23° / 46°8°
    Wind
    12 mph19 km/h, gusts 17 mph27 km/h
    UV peak
    4
  6. Wednesday, Oct 28. Fog. High 69°21°, low 42°6°. Typical 73°23° / 46°8°. Dry. Mostly agree.
    1. Morning

      6 AM–noon

      Cloudy, 44°7°

      Dry

    2. Afternoon

      noon–6 PM

      Sunny, 66°19°

      Dry

    3. Evening

      6 PM–midnight

      Cloudy, 53°12°

      Dry

    4. Overnight

      midnight–6 AM

      Cloudy, 46°8°

      Dry

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Areas of fog before 9am. Mostly sunny, with a high near 69.

    Night: Areas of fog after 10pm. Mostly cloudy, with a low around 42.

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

    High, likely
    65°18°–69°21°
    Low, likely
    41°5°–48°9°
    Typical high / low
    73°23° / 46°8°
    Wind
    7 mph11 km/h, gusts 16 mph26 km/h
    UV peak
    4
  7. Thursday, Oct 29. Fog. High 67°19°, low 42°6°. Typical 72°22° / 46°8°. Dry. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 46°8°

      Dry

    2. Afternoon

      noon–6 PM

      Cloudy, 64°18°

      Dry

    3. Evening

      6 PM–midnight

      Clear, 53°12°

      Dry

    4. Overnight

      midnight–6 AM

      Clear, 44°7°

      20% chance

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Areas of fog before 10am. Mostly sunny, with a high near 67.

    Night: Areas of fog between 9pm and 11pm, then areas of fog and a slight chance of rain showers. Partly cloudy, with a low around 42.

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

    High, likely
    63°17°–67°19°
    Low, likely
    42°6°–48°9°
    Typical high / low
    72°22° / 46°8°
    Wind
    9 mph14 km/h, gusts 15 mph24 km/h
    UV peak
    4
  8. Friday, Oct 30. Fog. High 65°18°, low 42°6°. Typical 72°22° / 45°7°. Rain 0.02 in0.5 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Sunny, 43°6°

      30% chance · 0.01 in0.3 mm

    2. Afternoon

      noon–6 PM

      Sunny, 63°17°

      30% chance

    3. Evening

      6 PM–midnight

      Cloudy, 51°11°

      30% chance

    4. Overnight

      midnight–6 AM

      Mostly clear, 40°5°

      30% chance

    Hours this far out come from computer models only.

    Official NWS forecast

    Day: Areas of fog and a chance of rain showers. Partly sunny, with a high near 65.

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

    High, likely
    60°16°–67°19°
    Low, likely
    38°3°–48°9°
    Typical high / low
    72°22° / 45°7°
    Wind
    9 mph15 km/h, gusts 20 mph32 km/h
    UV peak
    4
  9. Saturday, Oct 31. Cloudy. High 67°19°, low 41°5°. Typical 72°22° / 45°7°. Rain 0.01 in0.3 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Cloudy, 44°7°

      30% chance

    2. Afternoon

      noon–6 PM

      Sunny, 67°19°

      30% chance

    3. Evening

      6 PM–midnight

      Clear, 54°12°

      30% chance

    4. Overnight

      midnight–6 AM

      Clear, 44°7°

      30% chance

    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
    63°17°–75°24°
    Low, likely
    35°2°–46°8°
    Typical high / low
    72°22° / 45°7°
    Wind
    7 mph10 km/h, gusts 16 mph26 km/h
    UV peak
    4
  10. Sunday, Nov 1. Sunny. High 71°22°, low 43°6°. Typical 71°22° / 45°7°. Rain 0.01 in0.3 mm, 30% chance. Forecasts differ.
    1. Morning

      6 AM–noon

      Sunny, 46°8°

      20% chance

    2. Afternoon

      noon–6 PM

      Sunny, 73°23°

      20% chance

    3. Evening

      6 PM–midnight

      Clear, 58°14°

      20% chance

    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
    65°18°–80°27°
    Low, likely
    33°1°–47°8°
    Typical high / low
    71°22° / 45°7°
    Wind
    6 mph10 km/h, gusts 15 mph24 km/h
    UV peak
    4

The outlook

  1. Today

    Dry, high 71°, low 42°.

  2. Tomorrow

    Dry, high 75°, low 41°, warming up.

  3. Sunday

    Dry, high 73°, low 41°.

  4. Rest of week

    Mostly dry, highs 65–71°.

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 near Sebastopol

1.8 mi
Below flood stage
Level
55.6 ft
Flow
2 cfs

Forecast peak 55.5 ft Fri 9 PM

Reading from Fri 7:30 PM · NWS gauge page

Laguna de Santa Rosa at Stony Point Road NR Cotati

5.6 mi
Below flood stage
Level
73.4 ft
Flow
1 cfs

Forecast peak 73.0 ft Fri 9 PM

Reading from Fri 7:30 PM · NWS gauge page

Santa Rosa Creek at Santa Rosa

6.1 mi
Below flood stage
Level
23.4 ft
Flow
1 cfs

Forecast peak 23.1 ft Fri 9 PM

Reading from Fri 7 PM · NWS gauge page

Mark West Creek near Mirabel Heights

6.6 mi
Below flood stage
Level
38.8 ft
Flow
2 cfs

Forecast peak 38.7 ft Fri 9 PM

Reading from Fri 7:45 PM · NWS gauge page

For your home

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

Heating this week

About 37% less heating than a typical week.

This week 23Typical 37

Heating degree days, base 65°F

Heat-pump hours, next 7 days

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

47, 17 and 5°F are the test points heat pumps are rated at. About 4 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 48°F).

Open the windows?

Sat, 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 23, today vs a typical year

Today’s expected high is 3°2° colder than typical.

Normal high / low
74°23° / 46°8°
Forecast high / low
71°22° / 42°6°
Record high
92°33° in 1929
Record low
34°1° in 1961

Last 7 days vs normal

On average 0° colder than normal (daily mean temperature).

  1. +6°+3°SatOct 17
  2. —SunOct 18
  3. —MonOct 19
  4. —TueOct 20
  5. −4°−2°WedOct 21
  6. −2°−1°ThuOct 22
  7. —FriOct 23

Sebastopol weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Sunrise 7:28 AM, sunset 6:22 PM.

Daylight
10 h 54 min
Losing 2 min 21 s a day; shortest Dec 21, 1 h 24 min less
Golden hour
5:45–6:38 PM
Morning 7:11–8:05 AM
Blue hour
6:38–6:49 PM
Morning 7:01–7:11 AM; first light 7:01 AM

Stars tonight? Fair

Clear 9:06 PM–7:02 AM, but the moon is 96% lit and up.

Moon

Waxing gibbous

95% lit · growing

Today
sets 4:43 AM · rises 4:54 PM
Full moon
Oct 25
New moon
Nov 8
Looking northeast from Sebastopol. The highest point on the skyline is about 4,700 ft, 28 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.