Current Conditions

Foster City, California

68°F20°C

Partly Cloudy

Wind

WSW 3 mph4 km/h

Humidity

69%

Cloud Cover

88%

As of Tuesday, September 8, 2026 at 10:44 PM PDT

Today's Outlook

Night

Mostly cloudy, with a low around 66°F19°C. Light wind from the WNW around 3 mph5 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Partly Cloudy	High 89°F31°C	Low 66°F19°C	Precip 0 in0 mm—	Cloud 67%	Wind NW 4 mph6 km/h	Wednesday: Mostly cloudy and hot, with a high of 89°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 66°F19°C. Light wind from the WNW around 3 mph5 km/h.
Clear	High 82°F28°C	Low 65°F18°C	Precip 0 in0 mm—	Cloud 24%	Wind W 5 mph8 km/h	Thursday: Partly cloudy and warm, with a high of 82°F28°C and morning low of 68°F20°C. Breezy from the W at 6 to 8 mph10 to 13 km/h. Thursday Night: Mostly clear, with a low around 65°F18°C. Light wind from the WSW around 4 mph7 km/h.
Clear	High 72°F22°C	Low 61°F16°C	Precip 0 in0 mm—	Cloud 31%	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: Partly cloudy, with a low around 61°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 21%	Wind W 8 mph13 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 11 mph14 to 18 km/h. Saturday Night: Mostly clear, with a low around 59°F15°C. Breezy from the W at 7 to 9 mph11 to 15 km/h.
Clear	High 72°F22°C	Low 58°F14°C	Precip 0 in0 mm—	Cloud 11%	Wind WNW 7 mph12 km/h	Sunday: Mostly clear and warm, with a high of 72°F22°C and morning low of 61°F16°C. Breezy from the WNW at 8 to 11 mph13 to 17 km/h. Sunday Night: Mostly clear, with a low around 58°F14°C. Breezy from the WNW at 6 to 8 mph10 to 12 km/h.
Clear	High 74°F23°C	Low 57°F14°C	Precip 0 in0 mm—	Cloud 23%	Wind W 5 mph8 km/h	Monday: Mostly clear and warm, with a high of 74°F23°C and morning low of 59°F15°C. Breezy from the W at 6 to 9 mph9 to 15 km/h. Monday Night: Mostly clear, with a low around 57°F14°C. Light wind from the W around 4 mph7 km/h.
Partly Cloudy	High 70°F21°C	Low 58°F14°C	Precip 0 in0 mm—	Cloud 51%	Wind WSW 6 mph9 km/h	Tuesday: Partly cloudy and warm, with a high of 70°F21°C and morning low of 60°F16°C. Breezy from the WSW at 6 to 8 mph10 to 13 km/h. Tuesday Night: Mostly cloudy, with a low around 58°F14°C. Light wind from the WSW around 5 mph8 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	89°F31°C	66°F19°C	0 in0 mm· —	67%	Partly Cloudy	NW 4 mph6 km/h
DayMostly cloudy and hot, with a high of 89°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 66°F19°C. Light wind from the WNW around 3 mph5 km/h.
	ThursdaySep 10	82°F28°C	65°F18°C	0 in0 mm· —	24%	Clear	W 5 mph8 km/h
DayPartly cloudy and warm, with a high of 82°F28°C and morning low of 68°F20°C. Breezy from the W at 6 to 8 mph10 to 13 km/h. NightMostly clear, with a low around 65°F18°C. Light wind from the WSW around 4 mph7 km/h.
	FridaySep 11	72°F22°C	61°F16°C	0 in0 mm· —	31%	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. NightPartly cloudy, with a low around 61°F16°C. Light wind from the WSW around 5 mph8 km/h.
	SaturdaySep 12	70°F21°C	59°F15°C	0 in0 mm· —	21%	Clear	W 8 mph13 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 11 mph14 to 18 km/h. NightMostly clear, with a low around 59°F15°C. Breezy from the W at 7 to 9 mph11 to 15 km/h.
	SundaySep 13	72°F22°C	58°F14°C	0 in0 mm· —	11%	Clear	WNW 7 mph12 km/h
DayMostly clear and warm, with a high of 72°F22°C and morning low of 61°F16°C. Breezy from the WNW at 8 to 11 mph13 to 17 km/h. NightMostly clear, with a low around 58°F14°C. Breezy from the WNW at 6 to 8 mph10 to 12 km/h.
	MondaySep 14	74°F23°C	57°F14°C	0 in0 mm· —	23%	Clear	W 5 mph8 km/h
DayMostly clear and warm, with a high of 74°F23°C and morning low of 59°F15°C. Breezy from the W at 6 to 9 mph9 to 15 km/h. NightMostly clear, with a low around 57°F14°C. Light wind from the W around 4 mph7 km/h.
	TuesdaySep 15	70°F21°C	58°F14°C	0 in0 mm· —	51%	Partly Cloudy	WSW 6 mph9 km/h
DayPartly cloudy and warm, with a high of 70°F21°C and morning low of 60°F16°C. Breezy from the WSW at 6 to 8 mph10 to 13 km/h. NightMostly cloudy, with a low around 58°F14°C. Light wind from the WSW around 5 mph8 km/h.
	WednesdaySep 16	70°F21°C	58°F15°C	0 in0 mm· —	42%	Partly Cloudy	WSW 6 mph9 km/h
DayPartly cloudy and warm, with a high of 70°F21°C and morning low of 60°F15°C. Breezy from the WSW at 6 to 8 mph10 to 13 km/h. NightPartly cloudy, with a low around 58°F15°C. Light wind from the WSW around 5 mph8 km/h.
	ThursdaySep 17	72°F22°C	58°F14°C	0 in0 mm· —	30%	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 5 to 8 mph9 to 12 km/h. NightPartly cloudy, with a low around 58°F14°C. Light wind from the W around 4 mph7 km/h.
	FridaySep 18	72°F22°C	58°F14°C	0 in0.1 mm· 2%	32%	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	71°F22°C	58°F15°C	0 in0 mm· —	42%	Partly Cloudy	W 5 mph8 km/h
DayPartly cloudy and warm, with a high of 71°F22°C and morning low of 59°F15°C. Breezy from the W at 6 to 8 mph10 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	58°F15°C	0 in0.1 mm· 2%	40%	Clear	W 6 mph9 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 7 to 9 mph11 to 14 km/h. NightPartly cloudy, with a low around 58°F15°C. Light wind from the W around 5 mph8 km/h.
	MondaySep 21	72°F22°C	58°F15°C	0 in0 mm· —	43%	Partly Cloudy	W 5 mph9 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 mph10 to 13 km/h. NightPartly cloudy, with a low around 58°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%	42%	Partly Cloudy	W 5 mph8 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 mph7 km/h.
	WednesdaySep 23	74°F23°C	59°F15°C	0 in0.1 mm· 3%	40%	Clear	W 5 mph8 km/h
DayPartly cloudy and warm, with a high of 74°F23°C and morning low of 61°F16°C. Breezy from the W at 6 to 8 mph9 to 12 km/h. NightPartly cloudy, with a low around 59°F15°C. Light wind from the WSW around 4 mph6 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