Coastal Flood Advisory
Starts in 2 days 1 h
When
From 9 AM Monday to 3 PM PDT Thursday.
Where
Pacific Coast.
Issued for this forecast zone · National Weather Service San Francisco CA
What, impacts and precautionsHide details
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 1.6 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: Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast
See it on weather.gov (opens in a new tab)

Model estimate for 7:00 AM PDT (no recent station report)

Tamalpais-Homestead Valley, CA weather

Sunny and 50°10°.

Mostly agree

Now 50°10°

Sunny

Wind: Calm; Up to 5 mph8 km/h through 7 PM
Dew point: 39°4°; Comfortable · up to 47°8° by 3 PM
UV index: 0Low; Moderate 11 AM–5 PM · peak 5
Air quality: 7Good; Main pollutant: Ozone

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Above 60°16° today by 11 AM
High 71°22° today at 3 PM
Below 60°16° tonight after 8 PM
Low 49°9° tonight at 5 AM

This morningUp to 63°17° by 11 AM · Clear
This afternoonUp to 71°22° by 3 PM · Clear
TonightDown to 49°9° by 5 AM · Partly cloudy
Tomorrow morningUp to 60°16° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 69°21° by 3 PM · Mostly cloudy
Tomorrow nightDown to 50°10° by 5 AM · Partly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 7a	Sunny	50°10° (likely 50°10° to 53°12°)	50°10°	0%	2 mph3 km/h from N, gusts 4 mph6 km/h	66%	0%	0
Sat 8a	Sunny	50°10° (likely 50°10° to 54°12°)	50°10°	0%	2 mph3 km/h from NNE, gusts 3 mph6 km/h	66%	0%	0
Sat 9a	Sunny	55°13° (likely 54°12° to 57°14°)	55°13°	0%	2 mph3 km/h from ENE, gusts 4 mph6 km/h	63%	0%	1
Sat 10a	Sunny	59°15° (likely 59°15° to 63°17°)	59°15°	0%	3 mph5 km/h from E, gusts 4 mph6 km/h	57%	0%	2
Sat 11a	Sunny	63°17° (likely 63°17° to 66°19°)	63°17°	0%	3 mph5 km/h from NE, gusts 4 mph7 km/h	49%	0%	3
Sat 12p	Sunny	66°19° (likely 65°18° to 69°21°)	67°19°	0%	3 mph5 km/h from NE, gusts 5 mph7 km/h	46%	0%	4
Sat 1p	Sunny	68°20° (likely 67°19° to 72°22°)	69°21°	0%	3 mph5 km/h from NE, gusts 3 mph4 km/h	43%	0%	5
Sat 2p	Sunny	70°21° (likely 68°20° to 72°22°)	70°21°	0%	3 mph5 km/h from NW, gusts 5 mph8 km/h	41%	0%	5
Sat 3p	Sunny	71°22° (likely 68°20° to 71°22°)	71°22°	0%	3 mph5 km/h from WSW, gusts 9 mph14 km/h	42%	0%	4
Sat 4p	Sunny	70°21° (likely 68°20° to 70°21°)	70°21°	0%	5 mph8 km/h from WSW, gusts 11 mph18 km/h	47%	0%	3
Sat 5p	Sunny	70°21° (likely 66°19° to 70°21°)	70°21°	0%	5 mph8 km/h from WSW, gusts 12 mph19 km/h	50%	0%	2
Sat 6p	Clear	66°19° (likely 63°17° to 66°19°)	66°19°	0%	3 mph5 km/h from W, gusts 12 mph19 km/h	57%	0%	1
Sat 7p	Clear	61°16° (likely 60°16° to 62°17°)	61°16°	0%	2 mph3 km/h from W, gusts 12 mph19 km/h	63%	0%	0
Sat 8p	Clear	58°14° (likely 57°14° to 60°16°)	58°14°	0%	2 mph3 km/h from W, gusts 10 mph16 km/h	69%	8%	0
Sat 9p	Clear	56°13° (likely 55°13° to 58°14°)	56°13°	0%	1 mph2 km/h from W, gusts 7 mph12 km/h	74%	10%	0
Sat 10p	Clear	55°13° (likely 53°12° to 57°14°)	55°13°	0%	0 mph0 km/h, gusts 7 mph11 km/h	78%	12%	0
Sat 11p	Clear	54°12° (likely 52°11° to 56°13°)	54°12°	0%	0 mph0 km/h, gusts 8 mph13 km/h	81%	13%	0
Sun 12a	Clear	53°12° (likely 51°11° to 56°13°)	53°12°	0%	0 mph0 km/h, gusts 8 mph13 km/h	84%	21%	0
Sun 1a	Mostly clear	52°11° (likely 50°10° to 55°13°)	52°11°	0%	0 mph0 km/h, gusts 7 mph11 km/h	84%	56%	0
Sun 2a	Mostly clear	52°11° (likely 50°10° to 54°12°)	52°11°	0%	0 mph0 km/h, gusts 7 mph11 km/h	84%	57%	0
Sun 3a	Cloudy	50°10° (likely 50°10° to 54°12°)	51°11°	0%	0 mph0 km/h, gusts 7 mph11 km/h	86%	69%	0
Sun 4a	Cloudy	50°10° (likely 50°10° to 55°13°)	50°10°	0%	0 mph0 km/h, gusts 6 mph9 km/h	87%	77%	0
Sun 5a	Cloudy	49°9° (likely 49°9° to 54°12°)	49°9°	0%	1 mph2 km/h from N, gusts 6 mph10 km/h	91%	79%	0
Sun 6a	Partly cloudy	49°9° (likely 49°9° to 54°12°)	49°9°	0%	1 mph2 km/h from N, gusts 8 mph12 km/h	89%	83%	0
Sun 7a	Cloudy	49°9° (likely 49°9° to 53°12°)	49°9°	0%	1 mph2 km/h from N, gusts 7 mph12 km/h	90%	92%	0
Sun 8a	Cloudy	49°9° (likely 48°9° to 53°12°)	49°9°	0%	3 mph5 km/h from NE, gusts 7 mph11 km/h	88%	94%	0
Sun 9a	Partly sunny	53°12° (likely 52°11° to 55°13°)	53°12°	0%	3 mph5 km/h from NE, gusts 6 mph10 km/h	84%	86%	1
Sun 10a	Partly sunny	57°14° (likely 56°13° to 59°15°)	57°14°	0%	3 mph5 km/h from NE, gusts 5 mph8 km/h	79%	70%	2
Sun 11a	Cloudy	60°16° (likely 59°15° to 63°17°)	60°16°	0%	3 mph5 km/h from E, gusts 5 mph8 km/h	70%	65%	3
Sun 12p	Partly sunny	64°18° (likely 61°16° to 65°18°)	64°18°	0%	3 mph5 km/h from E, gusts 7 mph12 km/h	65%	72%	4
Sun 1p	Cloudy	66°19° (likely 64°18° to 66°19°)	66°19°	0%	3 mph5 km/h from E, gusts 9 mph15 km/h	59%	82%	4
Sun 2p	Cloudy	68°20° (likely 64°18° to 68°20°)	68°20°	0%	2 mph3 km/h from SW, gusts 11 mph17 km/h	54%	84%	4
Sun 3p	Cloudy	69°21° (likely 64°18° to 69°21°)	69°21°	0%	2 mph3 km/h from SW, gusts 13 mph22 km/h	54%	84%	3
Sun 4p	Cloudy	68°20° (likely 62°17° to 68°20°)	68°20°	0%	2 mph3 km/h from SW, gusts 13 mph22 km/h	57%	86%	3
Sun 5p	Cloudy	67°19° (likely 60°16° to 67°19°)	67°19°	0%	2 mph3 km/h from WSW, gusts 14 mph22 km/h	58%	88%	1
Sun 6p	Cloudy	64°18° (likely 57°14° to 64°18°)	64°18°	0%	2 mph3 km/h from WSW, gusts 14 mph23 km/h	66%	88%	0
Sun 7p	Cloudy	61°16° (likely 55°13° to 61°16°)	61°16°	0%	2 mph3 km/h from WSW, gusts 14 mph23 km/h	72%	87%	0
Sun 8p	Cloudy	58°14° (likely 55°13° to 58°14°)	58°14°	0%	1 mph2 km/h from WSW, gusts 14 mph22 km/h	77%	83%	0
Sun 9p	Partly cloudy	56°13° (likely 54°12° to 57°14°)	56°13°	0%	1 mph2 km/h from WSW, gusts 12 mph19 km/h	82%	75%	0
Sun 10p	Mostly clear	54°12° (likely 53°12° to 56°13°)	55°13°	0%	1 mph2 km/h from WSW, gusts 11 mph18 km/h	85%	24%	0
Sun 11p	Mostly clear	54°12° (likely 52°11° to 55°13°)	54°12°	0%	2 mph3 km/h from W, gusts 11 mph17 km/h	88%	13%	0
Mon 12a	Mostly clear	53°12° (likely 52°11° to 53°12°)	53°12°	0%	2 mph3 km/h from W, gusts 11 mph18 km/h	89%	19%	0
Mon 1a	Mostly clear	53°12° (likely 52°11° to 53°12°)	53°12°	0%	2 mph3 km/h from W, gusts 12 mph19 km/h	89%	21%	0
Mon 2a	Mostly clear	52°11° (likely 51°11° to 53°12°)	52°11°	0%	2 mph3 km/h from W, gusts 12 mph20 km/h	90%	22%	0
Mon 3a	Mostly clear	51°11° (likely 51°11° to 53°12°)	51°11°	0%	2 mph3 km/h from W, gusts 11 mph18 km/h	92%	20%	0
Mon 4a	Clear	51°11° (likely 51°11° to 52°11°)	51°11°	0%	2 mph3 km/h from W, gusts 11 mph18 km/h	94%	16%	0
Mon 5a	Clear	50°10° (likely 50°10° to 52°11°)	50°10°	0%	3 mph5 km/h from W, gusts 10 mph16 km/h	95%	18%	0
Mon 6a	Clear	50°10° (likely 50°10° to 52°11°)	49°9°	0%	3 mph5 km/h from W, gusts 10 mph15 km/h	96%	30%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Sunny. High 72°22°, low 48°9°. Typical 69°21° / 54°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 49°9°
  Dry
Official NWS forecast
Today: Sunny. High near 72, with temperatures falling to around 70 in the afternoon. North northeast wind around 5 mph.
Tonight: Mostly clear, with a low around 48. West northwest wind 0 to 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–72°22°
Low, likely
48°9°–53°12°
Typical high / low
69°21° / 54°12°
Wind
12 mph19 km/h
UV peak
5
Tomorrow, Oct 25. Cloudy. High 70°21°, low 49°9°. Typical 69°21° / 54°12°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Partly sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 50°10°
  Dry
Official NWS forecast
Day: Mostly sunny. High near 70, with temperatures falling to around 67 in the afternoon. North northwest wind around 3 mph.
Night: Mostly clear, with a low around 49. West southwest wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
65°18°–70°21°
Low, likely
48°9°–53°12°
Typical high / low
69°21° / 54°12°
Wind
13 mph21 km/h, gusts 21 mph33 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 66°19°, low 47°8°. Typical 69°21° / 54°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 66. West wind 3 to 13 mph, with gusts as high as 18 mph.
Night: Patchy fog after 5am. Mostly clear, with a low around 47.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–66°19°
Low, likely
47°8°–54°12°
Typical high / low
69°21° / 54°12°
Wind
11 mph17 km/h, gusts 21 mph33 km/h
UV peak
4
Tuesday, Oct 27. Fog. High 65°18°, low 48°9°. Typical 69°21° / 53°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog before 8am. Sunny, with a high near 65.
Night: Partly cloudy, with a low around 48.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–67°19°
Low, likely
47°8°–51°11°
Typical high / low
69°21° / 53°12°
Wind
11 mph18 km/h, gusts 22 mph35 km/h
UV peak
5
Wednesday, Oct 28. Partly sunny. High 64°18°, low 50°10°. Typical 68°20° / 53°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 56°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 54°12°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 64.
Night: Partly cloudy, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–65°18°
Low, likely
49°9°–52°11°
Typical high / low
68°20° / 53°12°
Wind
8 mph13 km/h, gusts 20 mph32 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 63°17°, low 50°10°. Typical 68°20° / 53°12°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain after 5pm. Mostly sunny, with a high near 63.
Night: A chance of rain. Partly cloudy, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–63°17°
Low, likely
50°10°–54°12°
Typical high / low
68°20° / 53°12°
Wind
11 mph18 km/h, gusts 23 mph37 km/h
UV peak
4
Friday, Oct 30. Rain. High 62°17°, low 49°9°. Typical 68°20° / 53°12°. Rain 0.01 in0.3 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  20% chance
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 48°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Partly sunny, with a high near 62.
Night: A chance of rain. Mostly cloudy, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–64°18°
Low, likely
43°6°–51°11°
Typical high / low
68°20° / 53°12°
Wind
9 mph15 km/h, gusts 19 mph31 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 61°16°, low 48°9°. Typical 68°20° / 53°12°. Rain 0.02 in0.5 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 49°9°
  20% chance
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  20% chance
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°9°
  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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–65°18°
Low, likely
44°7°–51°11°
Typical high / low
68°20° / 53°12°
Wind
9 mph14 km/h, gusts 17 mph27 km/h
UV peak
4
Sunday, Nov 1. Sunny. High 63°17°, low 48°9°. Typical 68°20° / 53°12°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  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°–68°20°
Low, likely
46°8°–51°11°
Typical high / low
68°20° / 53°12°
Wind
12 mph19 km/h, gusts 23 mph36 km/h
UV peak
4
Monday, Nov 2. Cloudy. High 64°18°, low 52°11°. Typical 67°19° / 53°12°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 56°13°
  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
60°16°–70°21°
Low, likely
48°9°–57°14°
Typical high / low
67°19° / 53°12°
Wind
9 mph15 km/h, gusts 22 mph35 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 72°, low 48°.
Tomorrow
Dry, high 70°, low 49°.
Monday
Dry, high 66°, low 47°, cooling off.
Rest of week
Mostly dry, highs 61–65°.

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

Coyote Creek (Marin) at Tam Valley

0.5 mi

Below flood stage

Level: 2.9 ft

Reading from Sat 6:20 AM · NWS gauge page

Arroyo Corte Madera del Presidio

1.3 mi

Below flood stage

Level: 2.7 ft

Reading from Fri 11:05 PM · NWS gauge page

Redwood Creek (Marin County) above Highway 1 Bridge at Muir Beach

2.4 mi

Below flood stage

Level: 1.1 ft
Flow: 1 cfs

Reading from Sat 5:30 AM · NWS gauge page

Corte Madera Creek at Ross

5.9 mi

Below flood stage

Level: 4.2 ft
Flow: 1 cfs

Reading from Sat 5:30 AM · NWS gauge page

For your home

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

Heating this week

About 45% less heating than a typical week.

This week 15Typical 28

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 39°F).

Open the windows?

Today, 11:00 AM–7:00 PM

Good stretch to open the windows.

Is this typical?

San Francisco Downtown · official normals 1991–2020 · records 1874–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

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

−3°−2°SunOct 18
−2°−1°MonOct 19
−1°TueOct 20
+1°WedOct 21
−2°−1°ThuOct 22
±0°FriOct 23
—SatOct 24

Tamalpais-Homestead Valley weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 53 min; Losing 2 min 16 s a day; shortest Dec 21, 1 h 20 min less
Golden hour: 5:44–6:36 PM; Morning 7:11–8:04 AM
Blue hour: 6:36–6:47 PM; Morning 7:00–7:11 AM; first light 7:00 AM

Stars tonight? Fair

Mostly clear 6:47 PM–1 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:49 AM · rises 5:20 PM
Full moon: Oct 25
New moon: Nov 8

Looking northwest from Tamalpais-Homestead Valley. The highest point on the skyline is about 2,500 ft, 4 mi away.Skyline from USGS elevation data, heights drawn up to 3.5× taller. Sky, sun and moon as they are now.

1 active weather alert

Coastal Flood Advisory

Tamalpais-Homestead Valley, CA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Coyote Creek (Marin) at Tam Valley

Arroyo Corte Madera del Presidio

Redwood Creek (Marin County) above Highway 1 Bridge at Muir Beach

Corte Madera Creek at Ross

For your home

Heating this week

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon