Current Conditions

South San Francisco, California

59°F15°C

Partly Cloudy

Wind

WSW 7 mph11 km/h

Humidity

90%

Cloud Cover

92%

As of Tuesday, September 22, 2026 at 2:21 AM PDT

Today's Outlook

Day

Mostly cloudy and mild, with a high of 65°F18°C and morning low of 59°F15°C. Breezy from the W at 7 to 9 mph11 to 15 km/h.

Night

Mostly cloudy, with a low around 58°F15°C. Breezy from the WSW at 6 to 7 mph10 to 12 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Partly Cloudy	High 65°F18°C	Low 58°F15°C	Precip 0.01 in0.2 mm2%	Cloud 63%	Wind W 7 mph11 km/h	Tuesday: Mostly cloudy and mild, with a high of 65°F18°C and morning low of 59°F15°C. Breezy from the W at 7 to 9 mph11 to 15 km/h. Tuesday Night: Mostly cloudy, with a low around 58°F15°C. Breezy from the WSW at 6 to 7 mph10 to 12 km/h.
Partly Cloudy	High 71°F22°C	Low 57°F14°C	Precip 0 in0 mm—	Cloud 42%	Wind WNW 5 mph8 km/h	Wednesday: Partly cloudy and warm, with a high of 71°F22°C and morning low of 58°F14°C. Breezy from the NW at 5 to 9 mph8 to 15 km/h. Wednesday Night: Partly cloudy, with a low around 57°F14°C. Light wind from the WNW around 4 mph7 km/h.
Partly Cloudy	High 71°F22°C	Low 58°F15°C	Precip 0 in0 mm—	Cloud 61%	Wind W 6 mph10 km/h	Thursday: Mostly cloudy and warm, with a high of 71°F22°C and morning low of 59°F15°C. Breezy from the W at 7 to 9 mph11 to 15 km/h. Thursday Night: Mostly cloudy, with a low around 58°F15°C. Breezy from the W at 6 to 7 mph9 to 12 km/h.
Clear	High 69°F20°C	Low 60°F15°C	Precip 0 in0 mm—	Cloud 37%	Wind WNW 9 mph14 km/h	Friday: Partly cloudy and warm, with a high of 69°F20°C and morning low of 61°F16°C. Breezy from the WNW at 10 to 12 mph16 to 19 km/h. Friday Night: Partly cloudy, with a low around 60°F15°C. Breezy from the WNW at 7 to 9 mph12 to 14 km/h.
Clear	High 68°F20°C	Low 56°F13°C	Precip 0 in0 mm—	Cloud 39%	Wind W 6 mph10 km/h	Saturday: Partly cloudy and mild, with a high of 68°F20°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 11 km/h.
Partly Cloudy	High 66°F19°C	Low 57°F14°C	Precip 0 in0 mm—	Cloud 41%	Wind W 7 mph11 km/h	Sunday: Partly cloudy and mild, with a high of 66°F19°C and morning low of 58°F14°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 6 to 7 mph10 to 12 km/h.
Clear	High 68°F20°C	Low 57°F14°C	Precip 0 in0.1 mm2%	Cloud 28%	Wind W 7 mph11 km/h	Monday: Partly cloudy and mild, with a high of 68°F20°C and morning low of 58°F14°C. Breezy from the W at 7 to 10 mph12 to 16 km/h. Monday Night: Partly cloudy, with a low around 57°F14°C. Breezy from the W at 6 to 7 mph10 to 12 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdaySep 22	65°F18°C	58°F15°C	0.01 in0.2 mm· 2%	63%	Partly Cloudy	W 7 mph11 km/h
DayMostly cloudy and mild, with a high of 65°F18°C and morning low of 59°F15°C. Breezy from the W at 7 to 9 mph11 to 15 km/h. NightMostly cloudy, with a low around 58°F15°C. Breezy from the WSW at 6 to 7 mph10 to 12 km/h.
	WednesdaySep 23	71°F22°C	57°F14°C	0 in0 mm· —	42%	Partly Cloudy	WNW 5 mph8 km/h
DayPartly cloudy and warm, with a high of 71°F22°C and morning low of 58°F14°C. Breezy from the NW at 5 to 9 mph8 to 15 km/h. NightPartly cloudy, with a low around 57°F14°C. Light wind from the WNW around 4 mph7 km/h.
	ThursdaySep 24	71°F22°C	58°F15°C	0 in0 mm· —	61%	Partly Cloudy	W 6 mph10 km/h
DayMostly cloudy and warm, with a high of 71°F22°C and morning low of 59°F15°C. Breezy from the W at 7 to 9 mph11 to 15 km/h. NightMostly cloudy, with a low around 58°F15°C. Breezy from the W at 6 to 7 mph9 to 12 km/h.
	FridaySep 25	69°F20°C	60°F15°C	0 in0 mm· —	37%	Clear	WNW 9 mph14 km/h
DayPartly cloudy and warm, with a high of 69°F20°C and morning low of 61°F16°C. Breezy from the WNW at 10 to 12 mph16 to 19 km/h. NightPartly cloudy, with a low around 60°F15°C. Breezy from the WNW at 7 to 9 mph12 to 14 km/h.
	SaturdaySep 26	68°F20°C	56°F13°C	0 in0 mm· —	39%	Clear	W 6 mph10 km/h
DayPartly cloudy and mild, with a high of 68°F20°C and morning low of 57°F14°C. Breezy from the W at 6 to 9 mph10 to 15 km/h. NightPartly cloudy, with a low around 56°F13°C. Breezy from the W at 6 to 7 mph9 to 11 km/h.
	SundaySep 27	66°F19°C	57°F14°C	0 in0 mm· —	41%	Partly Cloudy	W 7 mph11 km/h
DayPartly cloudy and mild, with a high of 66°F19°C and morning low of 58°F14°C. Breezy from the W at 8 to 10 mph13 to 16 km/h. NightPartly cloudy, with a low around 57°F14°C. Breezy from the W at 6 to 7 mph10 to 12 km/h.
	MondaySep 28	68°F20°C	57°F14°C	0 in0.1 mm· 2%	28%	Clear	W 7 mph11 km/h
DayPartly cloudy and mild, with a high of 68°F20°C and morning low of 58°F14°C. Breezy from the W at 7 to 10 mph12 to 16 km/h. NightPartly cloudy, with a low around 57°F14°C. Breezy from the W at 6 to 7 mph10 to 12 km/h.
	TuesdaySep 29	70°F21°C	57°F14°C	0.01 in0.2 mm· 2%	27%	Clear	W 6 mph10 km/h
DayPartly cloudy and warm, with a high of 70°F21°C and morning low of 58°F14°C. Breezy from the WNW at 7 to 9 mph11 to 15 km/h. NightPartly cloudy, with a low around 57°F14°C. Breezy from the W at 6 to 7 mph9 to 11 km/h.
	WednesdaySep 30	70°F21°C	58°F14°C	0.02 in0.4 mm· 3%	33%	Clear	W 6 mph10 km/h
DayPartly cloudy and warm, with a high of 70°F21°C and morning low of 59°F15°C. Breezy from the WNW at 7 to 9 mph11 to 15 km/h. NightPartly cloudy, with a low around 58°F14°C. Breezy from the W at 6 to 7 mph9 to 11 km/h.
	ThursdayOct 1	68°F20°C	58°F14°C	0.02 in0.6 mm· 5%	35%	Clear	WNW 8 mph13 km/h
DayPartly cloudy and warm, with a high of 68°F20°C and morning low of 59°F15°C. Breezy from the WNW at 9 to 11 mph14 to 17 km/h. NightPartly cloudy, with a low around 58°F14°C. Breezy from the WNW at 7 to 9 mph12 to 15 km/h.
	FridayOct 2	68°F20°C	57°F14°C	0.03 in0.7 mm· 8%	25%	Clear	WNW 8 mph13 km/h
DayPartly cloudy and warm, with a high of 68°F20°C and morning low of 58°F14°C. Breezy from the WNW at 9 to 10 mph14 to 17 km/h. NightPartly cloudy, with a low around 57°F14°C. Breezy from the WNW at 7 to 8 mph12 to 13 km/h.
	SaturdayOct 3	70°F21°C	58°F14°C	0.01 in0.3 mm· 3%	25%	Clear	WNW 7 mph11 km/h
DayPartly cloudy and warm, with a high of 70°F21°C and morning low of 59°F15°C. Breezy from the WNW at 7 to 9 mph12 to 15 km/h. NightPartly cloudy, with a low around 58°F14°C. Breezy from the WNW at 6 to 8 mph10 to 12 km/h.
	SundayOct 4	70°F21°C	58°F14°C	0.01 in0.2 mm· 5%	30%	Clear	WNW 7 mph11 km/h
DayPartly cloudy and warm, with a high of 70°F21°C and morning low of 59°F15°C. Breezy from the WNW at 7 to 10 mph12 to 15 km/h. NightPartly cloudy, with a low around 58°F14°C. Breezy from the WNW at 6 to 8 mph10 to 12 km/h.
	MondayOct 5	70°F21°C	58°F15°C	0.04 in1 mm· 6%	29%	Clear	W 7 mph11 km/h
DayPartly cloudy and warm, with a high of 70°F21°C and morning low of 59°F15°C. Breezy from the W at 7 to 9 mph11 to 15 km/h. NightPartly cloudy, with a low around 58°F15°C. Breezy from the W at 6 to 7 mph10 to 11 km/h.
	TuesdayOct 6	70°F21°C	58°F14°C	0.02 in0.6 mm· 5%	27%	Clear	WNW 6 mph10 km/h
DayPartly cloudy and warm, with a high of 70°F21°C and morning low of 58°F15°C. Breezy from the WNW at 7 to 9 mph11 to 15 km/h. NightPartly cloudy, with a low around 58°F14°C. Breezy from the W at 6 to 7 mph9 to 12 km/h.

Nearby Cities

San Bruno2 mi3 km Millbrae4 mi6 km Visitacion Valley4 mi7 km Daly City5 mi7 km Pacifica5 mi8 km Bayview-Hunters Point5 mi9 km

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.

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