Current Conditions

Sunnyvale, California

74°F23°C

Partly Cloudy

Wind

W 3 mph6 km/h

Humidity

53%

Cloud Cover

88%

As of Tuesday, September 8, 2026 at 8:40 PM PDT

Today's Outlook

Night

Mostly cloudy, with a low around 67°F19°C. Light wind from the N around 4 mph6 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Partly Cloudy	High 93°F34°C	Low 67°F19°C	Precip 0 in0 mm—	Cloud 67%	Wind NNW 4 mph6 km/h	Wednesday: Mostly cloudy and hot, with a high of 93°F34°C and morning low of 70°F21°C. Light wind from the NNW around 5 mph7 km/h. Wednesday Night: Mostly cloudy, with a low around 67°F19°C. Light wind from the N around 4 mph6 km/h.
Clear	High 88°F31°C	Low 67°F20°C	Precip 0 in0 mm—	Cloud 20%	Wind W 4 mph7 km/h	Thursday: Mostly clear and hot, with a high of 88°F31°C and morning low of 72°F22°C. Breezy from the W at 5 to 8 mph9 to 12 km/h. Thursday Night: Mostly clear, with a low around 67°F20°C. Light wind from the W around 3 mph5 km/h.
Clear	High 78°F26°C	Low 62°F16°C	Precip 0 in0 mm—	Cloud 12%	Wind W 4 mph7 km/h	Friday: Mostly clear and warm, with a high of 78°F26°C and morning low of 64°F18°C. Light wind from the W around 5 mph8 km/h. Friday Night: Mostly clear, with a low around 62°F16°C. Light wind from the W around 3 mph5 km/h.
Clear	High 73°F23°C	Low 58°F15°C	Precip 0 in0 mm—	Cloud 14%	Wind W 6 mph9 km/h	Saturday: Mostly clear and warm, with a high of 73°F23°C and morning low of 60°F16°C. Breezy from the W at 7 to 9 mph11 to 15 km/h. Saturday Night: Mostly clear, with a low around 58°F15°C. Breezy from the WNW at 5 to 7 mph8 to 11 km/h.
Clear	High 75°F24°C	Low 56°F13°C	Precip 0 in0 mm—	Cloud 9%	Wind NW 6 mph9 km/h	Sunday: Mostly clear and warm, with a high of 75°F24°C and morning low of 59°F15°C. Breezy from the NW at 7 to 8 mph11 to 14 km/h. Dry air. Sunday Night: Mostly clear, with a low around 56°F13°C. Light wind from the WNW around 4 mph7 km/h.
Clear	High 78°F25°C	Low 56°F14°C	Precip 0 in0 mm—	Cloud 13%	Wind WNW 4 mph6 km/h	Monday: Mostly clear and warm, with a high of 78°F25°C and morning low of 59°F15°C. Breezy from the WNW at 5 to 7 mph8 to 12 km/h. Dry air. Monday Night: Mostly clear, with a low around 56°F14°C. Light wind from the W around 3 mph5 km/h.
Clear	High 74°F24°C	Low 57°F14°C	Precip 0 in0 mm—	Cloud 33%	Wind WSW 4 mph7 km/h	Tuesday: Partly cloudy and warm, with a high of 74°F24°C and morning low of 60°F15°C. Light wind from the WSW around 5 mph8 km/h. Tuesday Night: Partly cloudy, with a low around 57°F14°C. Light wind from the WSW around 3 mph5 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	93°F34°C	67°F19°C	0 in0 mm· —	67%	Partly Cloudy	NNW 4 mph6 km/h
DayMostly cloudy and hot, with a high of 93°F34°C and morning low of 70°F21°C. Light wind from the NNW around 5 mph7 km/h. NightMostly cloudy, with a low around 67°F19°C. Light wind from the N around 4 mph6 km/h.
	ThursdaySep 10	88°F31°C	67°F20°C	0 in0 mm· —	20%	Clear	W 4 mph7 km/h
DayMostly clear and hot, with a high of 88°F31°C and morning low of 72°F22°C. Breezy from the W at 5 to 8 mph9 to 12 km/h. NightMostly clear, with a low around 67°F20°C. Light wind from the W around 3 mph5 km/h.
	FridaySep 11	78°F26°C	62°F16°C	0 in0 mm· —	12%	Clear	W 4 mph7 km/h
DayMostly clear and warm, with a high of 78°F26°C and morning low of 64°F18°C. Light wind from the W around 5 mph8 km/h. NightMostly clear, with a low around 62°F16°C. Light wind from the W around 3 mph5 km/h.
	SaturdaySep 12	73°F23°C	58°F15°C	0 in0 mm· —	14%	Clear	W 6 mph9 km/h
DayMostly clear and warm, with a high of 73°F23°C and morning low of 60°F16°C. Breezy from the W at 7 to 9 mph11 to 15 km/h. NightMostly clear, with a low around 58°F15°C. Breezy from the WNW at 5 to 7 mph8 to 11 km/h.
	SundaySep 13	75°F24°C	56°F13°C	0 in0 mm· —	9%	Clear	NW 6 mph9 km/h
DayMostly clear and warm, with a high of 75°F24°C and morning low of 59°F15°C. Breezy from the NW at 7 to 8 mph11 to 14 km/h. Dry air. NightMostly clear, with a low around 56°F13°C. Light wind from the WNW around 4 mph7 km/h.
	MondaySep 14	78°F25°C	56°F14°C	0 in0 mm· —	13%	Clear	WNW 4 mph6 km/h
DayMostly clear and warm, with a high of 78°F25°C and morning low of 59°F15°C. Breezy from the WNW at 5 to 7 mph8 to 12 km/h. Dry air. NightMostly clear, with a low around 56°F14°C. Light wind from the W around 3 mph5 km/h.
	TuesdaySep 15	74°F24°C	57°F14°C	0 in0 mm· —	33%	Clear	WSW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 74°F24°C and morning low of 60°F15°C. Light wind from the WSW around 5 mph8 km/h. NightPartly cloudy, with a low around 57°F14°C. Light wind from the WSW around 3 mph5 km/h.
	WednesdaySep 16	73°F23°C	57°F14°C	0 in0 mm· —	30%	Clear	WSW 4 mph6 km/h
DayPartly cloudy and warm, with a high of 73°F23°C and morning low of 59°F15°C. Light wind from the WSW around 5 mph8 km/h. NightPartly cloudy, with a low around 57°F14°C. Light wind from the WSW around 3 mph5 km/h.
	ThursdaySep 17	75°F24°C	57°F14°C	0 in0 mm· —	27%	Clear	W 4 mph6 km/h
DayMostly clear and warm, with a high of 75°F24°C and morning low of 59°F15°C. Light wind from the W around 4 mph7 km/h. NightPartly cloudy, with a low around 57°F14°C. Light wind from the W around 3 mph5 km/h.
	FridaySep 18	76°F24°C	58°F14°C	0 in0.1 mm· 3%	34%	Clear	WNW 4 mph6 km/h
DayPartly cloudy and warm, with a high of 76°F24°C and morning low of 60°F15°C. Breezy from the WNW at 5 to 7 mph8 to 11 km/h. NightPartly cloudy, with a low around 58°F14°C. Light wind from the WNW around 3 mph5 km/h.
	SaturdaySep 19	75°F24°C	58°F15°C	0 in0 mm· —	36%	Clear	WNW 4 mph7 km/h
DayPartly cloudy and warm, with a high of 75°F24°C and morning low of 60°F15°C. Breezy from the WNW at 5 to 7 mph8 to 11 km/h. NightPartly cloudy, with a low around 58°F15°C. Light wind from the WNW around 4 mph6 km/h.
	SundaySep 20	75°F24°C	58°F14°C	0 in0.1 mm· 3%	34%	Clear	W 4 mph7 km/h
DayPartly cloudy and warm, with a high of 75°F24°C and morning low of 60°F15°C. Breezy from the W at 5 to 7 mph8 to 11 km/h. NightPartly cloudy, with a low around 58°F14°C. Light wind from the W around 3 mph6 km/h.
	MondaySep 21	76°F25°C	58°F15°C	0 in0 mm· —	30%	Clear	W 4 mph6 km/h
DayPartly cloudy and warm, with a high of 76°F25°C and morning low of 60°F16°C. Light wind from the W around 5 mph7 km/h. NightPartly cloudy, with a low around 58°F15°C. Light wind from the W around 3 mph5 km/h.
	TuesdaySep 22	78°F25°C	59°F15°C	0 in0.1 mm· 2%	31%	Clear	W 4 mph6 km/h
DayPartly cloudy and warm, with a high of 78°F25°C and morning low of 62°F16°C. Light wind from the W around 5 mph7 km/h. NightPartly cloudy, with a low around 59°F15°C. Light wind from the W around 3 mph5 km/h.
	WednesdaySep 23	78°F26°C	59°F15°C	0 in0 mm· —	31%	Clear	W 4 mph7 km/h
DayPartly cloudy and warm, with a high of 78°F26°C and morning low of 61°F16°C. Light wind from the W around 5 mph8 km/h. NightPartly cloudy, with a low around 59°F15°C. Light wind from the WSW around 3 mph5 km/h.

Nearby Cities

Mountain View3 mi5 km Cupertino3 mi5 km Los Altos4 mi7 km Santa Clara5 mi7 km Saratoga7 mi12 km Campbell7 mi12 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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/weather/{country}/{region}/{city}/	/weather/united-states/california/san-francisco/	With region — redirects to canonical
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Coordinates: 37.3688°N, 122.0363°W·Elevation: 39m·Timezone: America/Los_Angeles·Population: 155,805