Current Conditions

Millbrae, California

64°F18°C
Partly Cloudy

Wind

W 10 mph16 km/h

Humidity

76%

Cloud Cover

37%

As of Tuesday, September 22, 2026 at 5:05 PM PDT

Today's Outlook

Day

Mostly cloudy and mild, with a high of 65°F18°C. Breezy from the W at 8 to 10 mph13 to 16 km/h.

Night

Partly cloudy, with a low around 59°F15°C. Breezy from the W at 7 to 8 mph11 to 13 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 65°F18°CLow 59°F15°CPrecip 0 in0.1 mmCloud 49%Wind W 8 mph13 km/hTuesday: Mostly cloudy and mild, with a high of 65°F18°C. Breezy from the W at 8 to 10 mph13 to 16 km/h. Tuesday Night: Partly cloudy, with a low around 59°F15°C. Breezy from the W at 7 to 8 mph11 to 13 km/h.
Partly CloudyHigh 71°F22°CLow 57°F14°CPrecip 0 in0 mmCloud 40%Wind WNW 5 mph8 km/hWednesday: Partly cloudy and warm, with a high of 71°F22°C and morning low of 57°F14°C. Breezy from the NW at 5 to 9 mph9 to 15 km/h. Wednesday Night: Partly cloudy, with a low around 57°F14°C. Light wind from the WNW around 5 mph8 km/h.
Partly CloudyHigh 70°F21°CLow 58°F14°CPrecip 0 in0 mmCloud 58%Wind W 6 mph10 km/hThursday: Mostly cloudy and warm, with a high of 70°F21°C and morning low of 58°F15°C. Breezy from the W at 7 to 10 mph11 to 16 km/h. Thursday Night: Mostly cloudy, with a low around 58°F14°C. Breezy from the W at 6 to 8 mph9 to 12 km/h.
ClearHigh 68°F20°CLow 59°F15°CPrecip 0 in0 mmCloud 35%Wind WNW 8 mph13 km/hFriday: Partly cloudy and warm, with a high of 68°F20°C and morning low of 61°F16°C. Breezy from the WNW at 9 to 11 mph15 to 18 km/h. Friday Night: Partly cloudy, with a low around 59°F15°C. Breezy from the WNW at 7 to 8 mph11 to 13 km/h.
Partly CloudyHigh 67°F19°CLow 56°F13°CPrecip 0 in0 mmCloud 50%Wind W 6 mph10 km/hSaturday: Mostly cloudy and mild, with a high of 67°F19°C and morning low of 57°F14°C. Breezy from the W at 6 to 9 mph10 to 15 km/h. Saturday Night: Partly cloudy, with a low around 56°F13°C. Breezy from the W at 6 to 7 mph9 to 12 km/h.
Partly CloudyHigh 65°F19°CLow 57°F14°CPrecip 0 in0.1 mm2%Cloud 43%Wind W 7 mph12 km/hSunday: Partly cloudy and mild, with a high of 65°F19°C and morning low of 58°F15°C. Breezy from the W at 8 to 10 mph13 to 16 km/h. Sunday Night: Partly cloudy, with a low around 57°F14°C. Breezy from the W at 7 to 8 mph11 to 12 km/h.
ClearHigh 67°F20°CLow 57°F14°CPrecip 0 in0.1 mm1%Cloud 29%Wind WNW 6 mph10 km/hMonday: Partly cloudy and mild, with a high of 67°F20°C and morning low of 57°F14°C. Breezy from the WNW at 7 to 10 mph11 to 16 km/h. Monday Night: Partly cloudy, with a low around 57°F14°C. Breezy from the WNW at 6 to 8 mph10 to 12 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
TuesdaySep 2265°F18°C59°F15°C0 in0.1 mm· —49%Partly CloudyW 8 mph13 km/h
WednesdaySep 2371°F22°C57°F14°C0 in0 mm· —40%Partly CloudyWNW 5 mph8 km/h
ThursdaySep 2470°F21°C58°F14°C0 in0 mm· —58%Partly CloudyW 6 mph10 km/h
FridaySep 2568°F20°C59°F15°C0 in0 mm· —35%ClearWNW 8 mph13 km/h
SaturdaySep 2667°F19°C56°F13°C0 in0 mm· —50%Partly CloudyW 6 mph10 km/h
SundaySep 2765°F19°C57°F14°C0 in0.1 mm· 2%43%Partly CloudyW 7 mph12 km/h
MondaySep 2867°F20°C57°F14°C0 in0.1 mm· 1%29%ClearWNW 6 mph10 km/h
TuesdaySep 2971°F21°C57°F14°C0.01 in0.2 mm· 3%22%ClearWNW 6 mph9 km/h
WednesdaySep 3072°F22°C59°F15°C0.01 in0.2 mm· 3%36%ClearWNW 6 mph9 km/h
ThursdayOct 170°F21°C59°F15°C0.03 in0.8 mm· 5%43%Partly CloudyWNW 7 mph11 km/h
FridayOct 271°F22°C58°F15°C0 in0 mm· —26%ClearWNW 6 mph10 km/h
SaturdayOct 373°F23°C59°F15°C0 in0.1 mm· 3%21%ClearWNW 5 mph9 km/h
SundayOct 472°F22°C59°F15°C0 in0.1 mm· 2%28%ClearWNW 5 mph9 km/h
MondayOct 573°F23°C59°F15°C0.01 in0.2 mm· 3%26%ClearWNW 5 mph8 km/h
TuesdayOct 673°F23°C60°F16°C0.01 in0.3 mm· 3%29%ClearW 5 mph8 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 37.5986°N, 122.3872°W·Elevation: 10m·Timezone: America/Los_Angeles·Population: 22,795