Current Conditions

Sunnyvale, California

59°F15°C
Drizzle

Wind

W 3 mph4 km/h

Humidity

88%

Cloud Cover

38%

As of Wednesday, September 2, 2026 at 9:50 PM PDT

Today's Outlook

Night

Mostly cloudy, with a low around 56°F14°C. Light wind from the SW around 3 mph5 km/h. 14% chance of drizzle overnight.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
DrizzleHigh 71°F22°CLow 56°F14°CPrecip 0.01 in0.2 mm14%Cloud 59%Wind SW 5 mph8 km/hThursday: Mostly cloudy and warm, with a high of 71°F22°C and morning low of 59°F15°C. Breezy from the SW at 6 to 8 mph10 to 13 km/h. Thursday Night: Mostly cloudy, with a low around 56°F14°C. Light wind from the SW around 3 mph5 km/h. 14% chance of drizzle overnight.
DrizzleHigh 71°F22°CLow 60°F15°CPrecip 0.02 in0.6 mm35%Cloud 39%Wind WNW 5 mph7 km/hFriday: Partly cloudy and warm, with a high of 71°F22°C and morning low of 60°F16°C. Breezy from the W at 5 to 8 mph8 to 13 km/h. Friday Night: Partly cloudy, with a low around 60°F15°C. Light wind from the WNW around 4 mph6 km/h. 35% chance of drizzle overnight.
ClearHigh 72°F22°CLow 56°F13°CPrecip 0 in0 mmCloud 22%Wind W 4 mph7 km/hSaturday: Mostly clear and warm, with a high of 72°F22°C and morning low of 59°F15°C. Breezy from the W at 5 to 8 mph8 to 13 km/h. Saturday Night: Mostly clear, with a low around 56°F13°C. Light wind from the WNW around 4 mph6 km/h.
ClearHigh 71°F22°CLow 56°F13°CPrecip 0 in0 mmCloud 23%Wind W 5 mph9 km/hSunday: Mostly clear and warm, with a high of 71°F22°C and morning low of 58°F14°C. Breezy from the W at 7 to 9 mph11 to 14 km/h. Sunday Night: Partly cloudy, with a low around 56°F13°C. Light wind from the WNW around 4 mph7 km/h.
ClearHigh 78°F26°CLow 55°F13°CPrecip 0 in0 mmCloud 17%Wind NW 4 mph7 km/hMonday: Mostly clear and warm, with a high of 78°F26°C and morning low of 59°F15°C. Breezy from the NW at 5 to 8 mph8 to 12 km/h. Monday Night: Mostly clear, with a low around 55°F13°C. Light wind from the NW around 3 mph5 km/h.
ClearHigh 80°F27°CLow 59°F15°CPrecip 0 in0 mmCloud 31%Wind W 4 mph6 km/hTuesday: Partly cloudy and warm, with a high of 80°F27°C and morning low of 61°F16°C. Light wind from the W around 4 mph7 km/h. Tuesday Night: Partly cloudy, with a low around 59°F15°C. Light wind from the WNW around 3 mph5 km/h.
ClearHigh 82°F28°CLow 61°F16°CPrecip 0 in0.1 mm3%Cloud 37%Wind WNW 3 mph6 km/hWednesday: Partly cloudy and warm, with a high of 82°F28°C and morning low of 64°F18°C. Light wind from the WNW around 4 mph7 km/h. Wednesday Night: Partly cloudy, with a low around 61°F16°C. Light wind from the W around 3 mph5 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdaySep 371°F22°C56°F14°C0.01 in0.2 mm· 14%59%DrizzleSW 5 mph8 km/h
FridaySep 471°F22°C60°F15°C0.02 in0.6 mm· 35%39%DrizzleWNW 5 mph7 km/h
SaturdaySep 572°F22°C56°F13°C0 in0 mm· —22%ClearW 4 mph7 km/h
SundaySep 671°F22°C56°F13°C0 in0 mm· —23%ClearW 5 mph9 km/h
MondaySep 778°F26°C55°F13°C0 in0 mm· —17%ClearNW 4 mph7 km/h
TuesdaySep 880°F27°C59°F15°C0 in0 mm· —31%ClearW 4 mph6 km/h
WednesdaySep 982°F28°C61°F16°C0 in0.1 mm· 3%37%ClearWNW 3 mph6 km/h
ThursdaySep 1082°F28°C64°F18°C0 in0.1 mm· 2%26%ClearW 4 mph6 km/h
FridaySep 1179°F26°C62°F17°C0.02 in0.4 mm· 4%28%ClearW 4 mph7 km/h
SaturdaySep 1277°F25°C61°F16°C0.02 in0.5 mm· 5%32%ClearW 4 mph7 km/h
SundaySep 1377°F25°C60°F15°C0.03 in0.7 mm· 6%31%ClearW 4 mph7 km/h
MondaySep 1479°F26°C60°F16°C0 in0.1 mm· 3%22%ClearWNW 4 mph6 km/h
TuesdaySep 1580°F26°C61°F16°C0.01 in0.2 mm· 3%22%ClearW 4 mph6 km/h
WednesdaySep 1680°F27°C62°F17°C0.01 in0.3 mm· 5%25%ClearW 4 mph6 km/h
ThursdaySep 1781°F27°C62°F17°C0 in0.1 mm· 2%24%ClearW 4 mph6 km/h

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.

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Coordinates: 37.3688°N, 122.0363°W·Elevation: 39m·Timezone: America/Los_Angeles·Population: 155,805