Coastal Flood Advisory
Ends in 5 days 2 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 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 1.1 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 12:00 PM PDT at KSFO

San Bruno, CA weather

Sunny and 66°19°.

Mostly agree

Now 66°19°

Sunny

Wind: 6 mph10 km/h; From the northeast. Up to 10 mph16 km/h through 12 AM
Dew point: 43°6°; Comfortable · up to 52°11° by 6 PM
UV index: 4Moderate; Moderate until 4 PM
Air quality: 44Good; PM2.5 (fine particles) · tomorrow moderate
Pressure: 30.05 inHg1018 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

High 69°21° today at 3 PM
Below 60°16° tonight after 8 PM
Low 52°11° tonight at 5 AM
Above 60°16° tomorrow by 11 AM

This afternoonUp to 69°21° by 3 PM · Clear
TonightDown to 52°11° by 5 AM · Clear
Tomorrow morningUp to 62°17° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 68°20° by 2 PM · Mostly cloudy
Tomorrow nightDown to 53°12° by 5 AM · Partly cloudy
Monday morningUp to 62°17° by 11 AM · Mostly 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 12p	Sunny	65°18° (likely 63°17° to 67°19°)	65°18°	0%	6 mph10 km/h from NE, gusts 6 mph10 km/h	50%	0%	4
Sat 1p	Sunny	67°19° (likely 64°18° to 69°21°)	67°19°	0%	5 mph8 km/h from N, gusts 5 mph8 km/h	47%	0%	4
Sat 2p	Sunny	68°20° (likely 65°18° to 72°22°)	68°20°	0%	5 mph8 km/h from NW, gusts 4 mph7 km/h	47%	0%	4
Sat 3p	Sunny	69°21° (likely 66°19° to 69°21°)	69°21°	0%	6 mph10 km/h from WNW, gusts 7 mph11 km/h	48%	0%	3
Sat 4p	Sunny	68°20° (likely 65°18° to 68°20°)	68°20°	0%	9 mph14 km/h from WNW, gusts 10 mph16 km/h	50%	0%	2
Sat 5p	Sunny	68°20° (likely 63°17° to 68°20°)	68°20°	0%	10 mph16 km/h from W, gusts 12 mph19 km/h	51%	0%	2
Sat 6p	Clear	64°18° (likely 60°16° to 64°18°)	65°18°	0%	10 mph16 km/h from W, gusts 13 mph20 km/h	65%	1%	1
Sat 7p	Clear	60°16° (likely 57°14° to 60°16°)	60°16°	0%	8 mph13 km/h from W, gusts 12 mph19 km/h	73%	1%	0
Sat 8p	Clear	58°14° (likely 56°13° to 58°14°)	59°15°	0%	6 mph10 km/h from W, gusts 10 mph17 km/h	77%	0%	0
Sat 9p	Clear	58°14° (likely 55°13° to 58°14°)	58°14°	0%	3 mph5 km/h from W, gusts 8 mph13 km/h	77%	0%	0
Sat 10p	Clear	57°14° (likely 54°12° to 57°14°)	57°14°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	77%	5%	0
Sat 11p	Clear	56°13° (likely 53°12° to 56°13°)	56°13°	0%	2 mph3 km/h from WSW, gusts 5 mph8 km/h	77%	11%	0
Sun 12a	Clear	55°13° (likely 52°11° to 56°13°)	55°13°	0%	1 mph2 km/h from W, gusts 4 mph6 km/h	81%	12%	0
Sun 1a	Clear	54°12° (likely 52°11° to 55°13°)	54°12°	0%	0 mph0 km/h, gusts 2 mph3 km/h	78%	7%	0
Sun 2a	Clear	54°12° (likely 51°11° to 54°12°)	54°12°	0%	0 mph0 km/h, gusts 3 mph4 km/h	80%	10%	0
Sun 3a	Partly cloudy	53°12° (likely 51°11° to 53°12°)	53°12°	0%	0 mph0 km/h, gusts 3 mph5 km/h	80%	49%	0
Sun 4a	Partly cloudy	53°12° (likely 50°10° to 53°12°)	53°12°	0%	0 mph0 km/h, gusts 3 mph5 km/h	76%	52%	0
Sun 5a	Cloudy	52°11° (likely 50°10° to 53°12°)	52°11°	0%	0 mph0 km/h, gusts 5 mph8 km/h	79%	61%	0
Sun 6a	Cloudy	52°11° (likely 49°9° to 52°11°)	52°11°	0%	1 mph2 km/h from WSW, gusts 5 mph8 km/h	84%	66%	0
Sun 7a	Cloudy	52°11° (likely 48°9° to 52°11°)	52°11°	0%	1 mph2 km/h from WSW, gusts 6 mph9 km/h	86%	69%	0
Sun 8a	Cloudy	52°11° (likely 49°9° to 52°11°)	53°12°	0%	1 mph2 km/h from W, gusts 6 mph10 km/h	86%	74%	0
Sun 9a	Cloudy	55°13° (likely 52°11° to 56°13°)	55°13°	0%	1 mph2 km/h from W, gusts 6 mph9 km/h	86%	79%	1
Sun 10a	Cloudy	58°14° (likely 55°13° to 59°15°)	58°14°	0%	2 mph3 km/h from N, gusts 5 mph8 km/h	83%	81%	2
Sun 11a	Partly sunny	62°17° (likely 58°14° to 62°17°)	62°17°	0%	2 mph3 km/h from N, gusts 5 mph8 km/h	75%	71%	3
Sun 12p	Cloudy	64°18° (likely 61°16° to 64°18°)	64°18°	0%	2 mph3 km/h from W, gusts 6 mph9 km/h	69%	65%	4
Sun 1p	Cloudy	66°19° (likely 63°17° to 66°19°)	66°19°	0%	2 mph3 km/h from W, gusts 8 mph12 km/h	63%	77%	4
Sun 2p	Cloudy	68°20° (likely 62°17° to 68°20°)	68°20°	0%	5 mph8 km/h from W, gusts 11 mph18 km/h	61%	84%	4
Sun 3p	Cloudy	66°19° (likely 61°16° to 66°19°)	66°19°	0%	6 mph10 km/h from W, gusts 13 mph21 km/h	63%	84%	3
Sun 4p	Partly sunny	66°19° (likely 60°16° to 66°19°)	66°19°	0%	8 mph13 km/h from W, gusts 13 mph22 km/h	64%	84%	3
Sun 5p	Cloudy	65°18° (likely 59°15° to 65°18°)	65°18°	0%	8 mph13 km/h from W, gusts 14 mph22 km/h	64%	80%	1
Sun 6p	Cloudy	61°16° (likely 57°14° to 61°16°)	61°16°	0%	7 mph11 km/h from W, gusts 13 mph21 km/h	73%	83%	0
Sun 7p	Cloudy	59°15° (likely 55°13° to 59°15°)	59°15°	0%	6 mph10 km/h from W, gusts 12 mph20 km/h	80%	82%	0
Sun 8p	Cloudy	58°14° (likely 54°12° to 58°14°)	58°14°	0%	6 mph10 km/h from W, gusts 13 mph21 km/h	82%	81%	0
Sun 9p	Partly cloudy	57°14° (likely 53°12° to 57°14°)	57°14°	0%	5 mph8 km/h from W, gusts 13 mph21 km/h	82%	55%	0
Sun 10p	Clear	56°13° (likely 53°12° to 56°13°)	56°13°	0%	5 mph8 km/h from W, gusts 12 mph19 km/h	82%	32%	0
Sun 11p	Mostly clear	56°13° (likely 52°11° to 56°13°)	56°13°	0%	6 mph10 km/h from W, gusts 11 mph17 km/h	82%	27%	0
Mon 12a	Clear	55°13° (likely 51°11° to 56°13°)	55°13°	0%	6 mph10 km/h from W, gusts 10 mph16 km/h	85%	30%	0
Mon 1a	Clear	55°13° (likely 51°11° to 56°13°)	55°13°	0%	6 mph10 km/h from W, gusts 10 mph15 km/h	82%	30%	0
Mon 2a	Mostly clear	54°12° (likely 51°11° to 56°13°)	54°12°	0%	5 mph8 km/h from W, gusts 10 mph16 km/h	84%	40%	0
Mon 3a	Mostly clear	54°12° (likely 52°11° to 56°13°)	54°12°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	84%	43%	0
Mon 4a	Mostly clear	54°12° (likely 52°11° to 55°13°)	54°12°	0%	5 mph8 km/h from W, gusts 9 mph15 km/h	81%	51%	0
Mon 5a	Partly cloudy	53°12° (likely 51°11° to 56°13°)	53°12°	0%	5 mph8 km/h from W, gusts 9 mph14 km/h	85%	49%	0
Mon 6a	Cloudy	54°12° (likely 51°11° to 56°13°)	54°12°	0%	5 mph8 km/h from W, gusts 7 mph12 km/h	88%	77%	0
Mon 7a	Cloudy	54°12° (likely 51°11° to 56°13°)	54°12°	0%	5 mph8 km/h from W, gusts 7 mph12 km/h	90%	85%	0
Mon 8a	Partly sunny	54°12° (likely 51°11° to 56°13°)	54°12°	0%	3 mph5 km/h from WNW, gusts 7 mph11 km/h	90%	52%	0
Mon 9a	Partly sunny	56°13° (likely 54°12° to 57°14°)	56°13°	0%	3 mph5 km/h from WNW, gusts 7 mph11 km/h	88%	59%	1
Mon 10a	Partly sunny	59°15° (likely 58°14° to 59°15°)	59°15°	0%	3 mph5 km/h from WNW, gusts 8 mph13 km/h	84%	37%	2
Mon 11a	Partly sunny	62°17° (likely 60°16° to 62°17°)	62°17°	0%	8 mph13 km/h from WNW, gusts 10 mph17 km/h	80%	71%	3

Days ahead

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

Today, Oct 24. Sunny. High 70°21°, low 51°11°. Typical 71°22° / 52°11°. Dry. Mostly agree.
1. Afternoon
  noon–6 PM
  Sunny, 69°21°
  Dry
2. Evening
  6 PM–midnight
  Clear, 58°14°
  Dry
3. Overnight
  midnight–6 AM
  Partly cloudy, 52°11°
  Dry
Official NWS forecast
Today: Sunny. High near 70, with temperatures falling to around 68 in the afternoon. North northwest wind 5 to 10 mph.
Tonight: Mostly clear, with a low around 51. West southwest wind 0 to 10 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
66°19°–72°22°
Low, likely
49°9°–53°12°
Typical high / low
71°22° / 52°11°
Wind
12 mph19 km/h, gusts 17 mph27 km/h
UV peak
5
Tomorrow, Oct 25. Cloudy. High 68°20°, low 52°11°. Typical 71°22° / 52°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 53°12°
  Dry
Official NWS forecast
Day: Mostly sunny. High near 68, with temperatures falling to around 65 in the afternoon. West wind 1 to 8 mph.
Night: Partly cloudy, with a low around 52. West wind around 7 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–68°20°
Low, likely
48°9°–52°11°
Typical high / low
71°22° / 52°11°
Wind
12 mph19 km/h, gusts 20 mph32 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 64°18°, low 51°11°. Typical 70°21° / 52°11°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Partly sunny, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 52°11°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 64. West northwest wind 3 to 17 mph, with gusts as high as 25 mph.
Night: Mostly clear, with a low around 51.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
63°17°–65°18°
Low, likely
51°11°–55°13°
Typical high / low
70°21° / 52°11°
Wind
14 mph22 km/h, gusts 23 mph36 km/h
UV peak
5
Tuesday, Oct 27. Mostly sunny. High 64°18°, low 53°12°. Typical 70°21° / 52°11°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Partly sunny, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 51°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 64.
Night: Partly cloudy, with a low around 53.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
61°16°–64°18°
Low, likely
48°9°–54°12°
Typical high / low
70°21° / 52°11°
Wind
16 mph25 km/h
UV peak
5
Wednesday, Oct 28. Mostly cloudy. High 60°16°, low 54°12°. Typical 70°21° / 52°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 51°11°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 55°13°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny, with a high near 60.
Night: Mostly cloudy, with a low around 54.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–65°18°
Low, likely
48°9°–54°12°
Typical high / low
70°21° / 52°11°
Wind
8 mph14 km/h, gusts 13 mph22 km/h
UV peak
4
Thursday, Oct 29. Cloudy. High 60°16°, low 52°11°. Typical 70°21° / 52°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 60.
Night: A slight chance of rain after 5am. Partly cloudy, with a low around 52.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–63°17°
Low, likely
52°11°–55°13°
Typical high / low
70°21° / 52°11°
Wind
12 mph19 km/h, gusts 24 mph38 km/h
UV peak
4
Friday, Oct 30. Rain. High 58°14°, low 51°11°. Typical 69°21° / 51°11°. Rain 0.01 in0.3 mm, 20% chance. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 52°11°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  20% chance
4. Overnight
  midnight–6 AM
  Clear, 50°10°
  30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain. Mostly sunny, with a high near 58.
Night: A slight chance of rain. Partly cloudy, with a low around 51.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
58°14°–60°16°
Low, likely
50°10°–52°11°
Typical high / low
69°21° / 51°11°
Wind
14 mph22 km/h, gusts 27 mph44 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 60°16°, low 49°9°. Typical 69°21° / 51°11°. Rain 0.03 in0.8 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 51°10°
  20% chance
2. Afternoon
  noon–6 PM
  Sunny, 60°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°10°
  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
59°15°–62°17°
Low, likely
47°8°–52°11°
Typical high / low
69°21° / 51°11°
Wind
8 mph13 km/h, gusts 20 mph31 km/h
UV peak
4
Sunday, Nov 1. Drizzle. High 63°17°, low 49°9°. Typical 69°21° / 51°11°. Rain 0.03 in0.8 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 50°10°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°15°
  Dry
4. Overnight
  midnight–6 AM
  Rain, 51°10°
  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
45°7°–52°11°
Typical high / low
69°21° / 51°11°
Wind
13 mph20 km/h, gusts 30 mph48 km/h
UV peak
4
Monday, Nov 2. Rain. High 59°15°, low 51°11°. Typical 68°20° / 51°11°. Rain 0.21 in5.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 55°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
56°13°–63°17°
Low, likely
48°9°–53°12°
Typical high / low
68°20° / 51°11°
Wind
12 mph19 km/h, gusts 26 mph42 km/h

10 days15 days30 days

The outlook

Today
Dry, high 70°, low 51°.
Tomorrow
Dry, high 68°, low 52°.
Monday
Dry, high 64°, low 51°, cooling off.
Rest of week
Mostly dry, highs 58–64°.

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

Colma Creek at South San Francisco

2.0 mi

Level: 0.0 ft

Reading from Sat 10:04 AM · NWS gauge page

Green Hills Creek at Green Hill Country Club

2.1 mi

Level: 0.1 ft

Reading from Sat 8:18 AM · NWS gauge page

San Andreas Lake near Millbrae

3.3 mi

Level: 447 ft
Flow: 16,600 cfs

Reading from Sat 9:45 AM · NWS gauge page

San Mateo Creek above Junction Box

4.8 mi

Level: 0.0 ft

Reading from Sat 10:30 AM · NWS gauge page

For your home

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

Heating this week

About 52% less heating than a typical week.

This week 14Typical 28

Heating degree days, base 65°F

Comfort

Dry air outside (dew point 43°F).

Open the windows?

Today, 1:00 PM–7:00 PM

Good stretch to open the windows.

Is this typical?

San Francisco International Airport · official normals 1991–2020 · records 1945–2026

Oct 24, today vs a typical year

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

Last 7 days vs normal

On average 1°0° colder than normal (daily mean temperature).

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

San Bruno 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 7:10–8:03 AM
Blue hour: 6:36–6:47 PM; Morning 7:00–7:10 AM; first light 7:00 AM

Stars tonight? Fair

Mostly clear 6:47 PM–3 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:48 AM · rises 5:20 PM
Full moon: Oct 25
New moon: Nov 8

Looking east from San Bruno. The highest point on the skyline is about 4,300 ft, 48 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

1 active weather alert

Coastal Flood Advisory