Current Conditions

South San Francisco, California

59°F15°C
Partly Cloudy

Wind

WNW 9 mph14 km/h

Humidity

89%

Cloud Cover

84%

As of Thursday, July 23, 2026 at 9:13 AM PDT

Today's Outlook

Day

Partly cloudy and mild, with a high of 66°F19°C and morning low of 59°F15°C. Breezy from the WNW at 11 to 13 mph18 to 21 km/h.

Night

Partly cloudy, with a low around 58°F14°C. Breezy from the WNW at 9 to 11 mph15 to 18 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
ThursdayJul 23Partly CloudyHigh 66°F19°CLow 58°F14°CPrecip 0 in0.1 mmCloud 42%Wind WNW 10 mph17 km/hThursday: Partly cloudy and mild, with a high of 66°F19°C and morning low of 59°F15°C. Breezy from the WNW at 11 to 13 mph18 to 21 km/h. Thursday Night: Partly cloudy, with a low around 58°F14°C. Breezy from the WNW at 9 to 11 mph15 to 18 km/h.
FridayJul 24Partly CloudyHigh 66°F19°CLow 58°F14°CPrecip 0 in0.1 mmCloud 41%Wind WNW 11 mph17 km/hFriday: Partly cloudy and mild, with a high of 66°F19°C and morning low of 59°F15°C. Breezy from the WNW at 11 to 13 mph18 to 21 km/h. Friday Night: Partly cloudy, with a low around 58°F14°C. Breezy from the WNW at 10 to 12 mph16 to 19 km/h.
SaturdayJul 25ClearHigh 67°F20°CLow 58°F14°CPrecip 0 in0.1 mmCloud 33%Wind WNW 11 mph17 km/hSaturday: Partly cloudy and mild, with a high of 67°F20°C and morning low of 60°F15°C. Breezy from the WNW at 12 to 13 mph19 to 21 km/h. Saturday Night: Partly cloudy, with a low around 58°F14°C. Breezy from the WNW at 10 to 11 mph16 to 18 km/h.
SundayJul 26Partly CloudyHigh 66°F19°CLow 58°F15°CPrecip 0 in0.1 mmCloud 46%Wind W 10 mph17 km/hSunday: Partly cloudy and mild, with a high of 66°F19°C and morning low of 60°F15°C. Breezy from the W at 11 to 13 mph18 to 21 km/h. Sunday Night: Partly cloudy, with a low around 58°F15°C. Breezy from the W at 10 to 11 mph16 to 18 km/h.
MondayJul 27ClearHigh 68°F20°CLow 57°F14°CPrecip 0 in0 mmCloud 28%Wind W 9 mph15 km/hMonday: Partly cloudy and mild, with a high of 68°F20°C and morning low of 59°F15°C. Breezy from the W at 10 to 12 mph16 to 20 km/h. Monday Night: Partly cloudy, with a low around 57°F14°C. Breezy from the W at 9 to 10 mph14 to 16 km/h.
TuesdayJul 28ClearHigh 69°F20°CLow 58°F14°CPrecip 0 in0 mmCloud 18%Wind W 10 mph15 km/hTuesday: Mostly clear and warm, with a high of 69°F20°C and morning low of 60°F16°C. Breezy from the W at 10 to 12 mph17 to 20 km/h. Tuesday Night: Mostly clear, with a low around 58°F14°C. Breezy from the W at 9 to 10 mph14 to 17 km/h.
WednesdayJul 29ClearHigh 68°F20°CLow 58°F15°CPrecip 0 in0 mmCloud 28%Wind W 9 mph14 km/hWednesday: Partly cloudy and warm, with a high of 68°F20°C and morning low of 60°F16°C. Breezy from the W at 9 to 11 mph15 to 18 km/h. Wednesday Night: Partly cloudy, with a low around 58°F15°C. Breezy from the W at 8 to 9 mph13 to 15 km/h.

15-Day Forecast

Day High (°F) Low (°F) Precip (mm) Cloud Cover (%) Condition Wind (mph)

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: 37.6547°N, 122.4077°W·Elevation: 4m·Timezone: America/Los_Angeles·Population: 67,271