Current Conditions

Foster City, California

81°F27°C

Partly Cloudy

Wind

WNW 6 mph10 km/h

Humidity

41%

Cloud Cover

62%

As of Tuesday, September 8, 2026 at 5:42 PM PDT

Today's Outlook

Day

Partly cloudy and warm, with a high of 83°F28°C and morning low of 76°F24°C. Light wind from the WNW around 4 mph7 km/h.

Night

Overcast, with a low around 68°F20°C. Light wind from the W around 3 mph6 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Partly Cloudy	High 83°F28°C	Low 68°F20°C	Precip 0 in0 mm—	Cloud 59%	Wind WNW 4 mph6 km/h	Tuesday: Partly cloudy and warm, with a high of 83°F28°C and morning low of 76°F24°C. Light wind from the WNW around 4 mph7 km/h. Tuesday Night: Overcast, with a low around 68°F20°C. Light wind from the W around 3 mph6 km/h.
Partly Cloudy	High 88°F31°C	Low 67°F19°C	Precip 0 in0 mm—	Cloud 70%	Wind NNW 4 mph7 km/h	Wednesday: 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 12 km/h. Wednesday Night: Mostly cloudy, with a low around 67°F19°C. Light wind from the WNW around 3 mph5 km/h.
Clear	High 82°F28°C	Low 66°F19°C	Precip 0 in0 mm—	Cloud 18%	Wind W 5 mph8 km/h	Thursday: Mostly clear and warm, with a high of 82°F28°C and morning low of 69°F20°C. Breezy from the W at 6 to 8 mph10 to 13 km/h. Thursday Night: Mostly clear, with a low around 66°F19°C. Light wind from the WSW around 4 mph6 km/h.
Clear	High 72°F22°C	Low 62°F16°C	Precip 0 in0 mm—	Cloud 27%	Wind WSW 6 mph10 km/h	Friday: Partly cloudy and warm, with a high of 72°F22°C and morning low of 63°F17°C. Breezy from the WSW at 7 to 8 mph11 to 13 km/h. Friday Night: Mostly clear, with a low around 62°F16°C. Light wind from the WSW around 5 mph8 km/h.
Clear	High 70°F21°C	Low 59°F15°C	Precip 0 in0 mm—	Cloud 18%	Wind W 8 mph12 km/h	Saturday: Mostly clear and warm, with a high of 70°F21°C and morning low of 61°F16°C. Breezy from the W at 9 to 10 mph14 to 17 km/h. Saturday Night: Mostly clear, with a low around 59°F15°C. Breezy from the W at 7 to 9 mph10 to 14 km/h.
Clear	High 73°F23°C	Low 58°F15°C	Precip 0 in0 mm—	Cloud 11%	Wind WNW 7 mph11 km/h	Sunday: Mostly clear and warm, with a high of 73°F23°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°F15°C. Breezy from the WNW at 6 to 7 mph9 to 11 km/h.
Clear	High 73°F23°C	Low 58°F14°C	Precip 0 in0 mm—	Cloud 22%	Wind W 6 mph9 km/h	Monday: Mostly clear and warm, with a high of 73°F23°C and morning low of 60°F15°C. Breezy from the W at 6 to 9 mph10 to 15 km/h. Monday Night: Mostly clear, with a low around 58°F14°C. Light wind from the W around 5 mph8 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	TuesdaySep 8	83°F28°C	68°F20°C	0 in0 mm· —	59%	Partly Cloudy	WNW 4 mph6 km/h
DayPartly cloudy and warm, with a high of 83°F28°C and morning low of 76°F24°C. Light wind from the WNW around 4 mph7 km/h. NightOvercast, with a low around 68°F20°C. Light wind from the W around 3 mph6 km/h.
	WednesdaySep 9	88°F31°C	67°F19°C	0 in0 mm· —	70%	Partly Cloudy	NNW 4 mph7 km/h
DayMostly 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 12 km/h. NightMostly cloudy, with a low around 67°F19°C. Light wind from the WNW around 3 mph5 km/h.
	ThursdaySep 10	82°F28°C	66°F19°C	0 in0 mm· —	18%	Clear	W 5 mph8 km/h
DayMostly clear and warm, with a high of 82°F28°C and morning low of 69°F20°C. Breezy from the W at 6 to 8 mph10 to 13 km/h. NightMostly clear, with a low around 66°F19°C. Light wind from the WSW around 4 mph6 km/h.
	FridaySep 11	72°F22°C	62°F16°C	0 in0 mm· —	27%	Clear	WSW 6 mph10 km/h
DayPartly cloudy and warm, with a high of 72°F22°C and morning low of 63°F17°C. Breezy from the WSW at 7 to 8 mph11 to 13 km/h. NightMostly clear, with a low around 62°F16°C. Light wind from the WSW around 5 mph8 km/h.
	SaturdaySep 12	70°F21°C	59°F15°C	0 in0 mm· —	18%	Clear	W 8 mph12 km/h
DayMostly clear and warm, with a high of 70°F21°C and morning low of 61°F16°C. Breezy from the W at 9 to 10 mph14 to 17 km/h. NightMostly clear, with a low around 59°F15°C. Breezy from the W at 7 to 9 mph10 to 14 km/h.
	SundaySep 13	73°F23°C	58°F15°C	0 in0 mm· —	11%	Clear	WNW 7 mph11 km/h
DayMostly clear and warm, with a high of 73°F23°C and morning low of 60°F16°C. Breezy from the WNW at 8 to 10 mph13 to 16 km/h. NightMostly clear, with a low around 58°F15°C. Breezy from the WNW at 6 to 7 mph9 to 11 km/h.
	MondaySep 14	73°F23°C	58°F14°C	0 in0 mm· —	22%	Clear	W 6 mph9 km/h
DayMostly clear and warm, with a high of 73°F23°C and morning low of 60°F15°C. Breezy from the W at 6 to 9 mph10 to 15 km/h. NightMostly clear, with a low around 58°F14°C. Light wind from the W around 5 mph8 km/h.
	TuesdaySep 15	70°F21°C	58°F15°C	0 in0 mm· —	49%	Partly Cloudy	W 6 mph10 km/h
DayPartly cloudy and warm, with a high of 70°F21°C and morning low of 61°F16°C. Breezy from the W at 7 to 9 mph11 to 14 km/h. NightMostly cloudy, with a low around 58°F15°C. Light wind from the W around 5 mph9 km/h.
	WednesdaySep 16	70°F21°C	59°F15°C	0 in0 mm· —	47%	Partly Cloudy	WSW 6 mph10 km/h
DayPartly cloudy and warm, with a high of 70°F21°C and morning low of 60°F16°C. Breezy from the W at 7 to 8 mph11 to 13 km/h. NightMostly cloudy, with a low around 59°F15°C. Light wind from the WSW around 5 mph9 km/h.
	ThursdaySep 17	71°F22°C	58°F14°C	0 in0 mm· —	34%	Clear	W 5 mph8 km/h
DayPartly cloudy and warm, with a high of 71°F22°C and morning low of 60°F16°C. Breezy from the W at 6 to 8 mph9 to 13 km/h. NightPartly cloudy, with a low around 58°F14°C. Light wind from the W around 5 mph7 km/h.
	FridaySep 18	72°F22°C	58°F14°C	0 in0 mm· —	35%	Clear	W 5 mph8 km/h
DayPartly cloudy and warm, with a high of 72°F22°C and morning low of 59°F15°C. Breezy from the W at 6 to 8 mph9 to 13 km/h. NightPartly cloudy, with a low around 58°F14°C. Light wind from the W around 4 mph7 km/h.
	SaturdaySep 19	72°F22°C	58°F15°C	0 in0 mm· —	41%	Partly Cloudy	W 5 mph8 km/h
DayPartly cloudy and warm, with a high of 72°F22°C and morning low of 59°F15°C. Breezy from the W at 6 to 8 mph9 to 13 km/h. NightPartly cloudy, with a low around 58°F15°C. Light wind from the W around 4 mph7 km/h.
	SundaySep 20	71°F22°C	59°F15°C	0.01 in0.3 mm· 2%	47%	Partly Cloudy	W 5 mph8 km/h
DayPartly cloudy and warm, with a high of 71°F22°C and morning low of 60°F15°C. Breezy from the W at 6 to 8 mph10 to 13 km/h. NightMostly cloudy, with a low around 59°F15°C. Light wind from the W around 5 mph7 km/h.
	MondaySep 21	71°F22°C	59°F15°C	0.01 in0.3 mm· 2%	50%	Partly Cloudy	W 5 mph9 km/h
DayPartly cloudy and warm, with a high of 71°F22°C and morning low of 60°F16°C. Breezy from the W at 6 to 8 mph10 to 13 km/h. NightMostly cloudy, with a low around 59°F15°C. Light wind from the W around 5 mph8 km/h.
	TuesdaySep 22	73°F23°C	59°F15°C	0 in0.1 mm· 2%	45%	Partly Cloudy	W 5 mph9 km/h
DayPartly cloudy and warm, with a high of 73°F23°C and morning low of 61°F16°C. Breezy from the W at 6 to 8 mph10 to 13 km/h. NightPartly cloudy, with a low around 59°F15°C. Light wind from the W around 5 mph8 km/h.

Nearby Cities

Belmont3 mi4 km San Mateo3 mi5 km San Carlos4 mi6 km Redwood City5 mi9 km Burlingame5 mi9 km Millbrae7 mi11 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: 37.5585°N, 122.2711°W·Elevation: 2m·Timezone: America/Los_Angeles·Population: 33,477