Current Conditions

San Carlos, California

80°F27°C
Partly Cloudy

Wind

WNW 6 mph10 km/h

Humidity

43%

Cloud Cover

71%

As of Tuesday, September 8, 2026 at 6:23 PM PDT

Today's Outlook

Night

Mostly cloudy, with a low around 67°F19°C. Light wind from the WNW around 3 mph5 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 88°F31°CLow 67°F19°CPrecip 0 in0 mmCloud 70%Wind NNW 4 mph6 km/hWednesday: Mostly cloudy and hot, with a high of 88°F31°C and morning low of 68°F20°C. Breezy from the NNW at 5 to 7 mph8 to 11 km/h. Wednesday Night: Mostly cloudy, with a low around 67°F19°C. Light wind from the WNW around 3 mph5 km/h.
ClearHigh 81°F27°CLow 65°F18°CPrecip 0 in0 mmCloud 24%Wind W 5 mph8 km/hThursday: Partly cloudy and warm, with a high of 81°F27°C and morning low of 68°F20°C. Breezy from the W at 6 to 8 mph9 to 13 km/h. Thursday Night: Mostly clear, with a low around 65°F18°C. Light wind from the WSW around 4 mph6 km/h.
ClearHigh 72°F22°CLow 61°F16°CPrecip 0 in0 mmCloud 35%Wind W 5 mph9 km/hFriday: Partly cloudy and warm, with a high of 72°F22°C and morning low of 63°F17°C. Breezy from the W at 6 to 7 mph10 to 12 km/h. Friday Night: Partly cloudy, with a low around 61°F16°C. Light wind from the WSW around 5 mph7 km/h.
ClearHigh 69°F21°CLow 59°F15°CPrecip 0 in0 mmCloud 22%Wind W 7 mph12 km/hSaturday: Mostly clear and warm, with a high of 69°F21°C and morning low of 61°F16°C. Breezy from the W at 8 to 10 mph14 to 17 km/h. Saturday Night: Mostly clear, with a low around 59°F15°C. Breezy from the W at 6 to 9 mph10 to 14 km/h.
ClearHigh 72°F22°CLow 58°F14°CPrecip 0 in0 mmCloud 10%Wind WNW 7 mph11 km/hSunday: Mostly clear and warm, with a high of 72°F22°C and morning low of 60°F16°C. Breezy from the WNW at 8 to 10 mph13 to 16 km/h. Sunday Night: Mostly clear, with a low around 58°F14°C. Light wind from the WNW around 6 mph9 km/h.
ClearHigh 74°F23°CLow 57°F14°CPrecip 0 in0 mmCloud 24%Wind W 5 mph8 km/hMonday: Mostly clear and warm, with a high of 74°F23°C and morning low of 59°F15°C. Breezy from the WNW at 5 to 8 mph9 to 14 km/h. Monday Night: Partly cloudy, with a low around 57°F14°C. Light wind from the W around 4 mph6 km/h.
Partly CloudyHigh 70°F21°CLow 58°F15°CPrecip 0 in0 mmCloud 49%Wind W 5 mph8 km/hTuesday: Partly cloudy and warm, with a high of 70°F21°C and morning low of 60°F16°C. Breezy from the W at 6 to 8 mph10 to 12 km/h. Tuesday Night: Mostly cloudy, with a low around 58°F15°C. Light wind from the WSW around 5 mph7 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
WednesdaySep 988°F31°C67°F19°C0 in0 mm· —70%Partly CloudyNNW 4 mph6 km/h
ThursdaySep 1081°F27°C65°F18°C0 in0 mm· —24%ClearW 5 mph8 km/h
FridaySep 1172°F22°C61°F16°C0 in0 mm· —35%ClearW 5 mph9 km/h
SaturdaySep 1269°F21°C59°F15°C0 in0 mm· —22%ClearW 7 mph12 km/h
SundaySep 1372°F22°C58°F14°C0 in0 mm· —10%ClearWNW 7 mph11 km/h
MondaySep 1474°F23°C57°F14°C0 in0 mm· —24%ClearW 5 mph8 km/h
TuesdaySep 1570°F21°C58°F15°C0 in0 mm· —49%Partly CloudyW 5 mph8 km/h
WednesdaySep 1670°F21°C58°F15°C0 in0 mm· —45%Partly CloudyWSW 5 mph8 km/h
ThursdaySep 1771°F22°C58°F14°C0 in0 mm· —37%ClearW 5 mph8 km/h
FridaySep 1870°F21°C58°F14°C0 in0 mm· —40%Partly CloudyW 5 mph8 km/h
SaturdaySep 1970°F21°C58°F15°C0 in0.1 mm· 2%46%Partly CloudyW 5 mph9 km/h
SundaySep 2070°F21°C58°F15°C0 in0.1 mm· 2%49%Partly CloudyW 6 mph9 km/h
MondaySep 2171°F21°C59°F15°C0 in0 mm· —45%Partly CloudyW 5 mph9 km/h
TuesdaySep 2272°F22°C59°F15°C0.01 in0.3 mm· 3%47%Partly CloudyW 5 mph8 km/h
WednesdaySep 2374°F23°C60°F15°C0.01 in0.2 mm· 5%42%Partly CloudyW 5 mph7 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: 37.5072°N, 122.2605°W·Elevation: 10m·Timezone: America/Los_Angeles·Population: 29,931