Current Conditions

Cupertino, California

63°F17°C
Drizzle

Wind

W 4 mph7 km/h

Humidity

79%

Cloud Cover

40%

As of Wednesday, September 2, 2026 at 6:59 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. 16% chance of drizzle overnight.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
DrizzleHigh 71°F21°CLow 56°F14°CPrecip 0.01 in0.3 mm16%Cloud 59%Wind SW 5 mph7 km/hThursday: Mostly cloudy and warm, with a high of 71°F21°C and morning low of 59°F15°C. Breezy from the SW at 6 to 8 mph9 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. 16% chance of drizzle overnight.
DrizzleHigh 71°F21°CLow 59°F15°CPrecip 0.02 in0.6 mm37%Cloud 41%Wind WNW 5 mph7 km/hFriday: Partly cloudy and warm, with a high of 71°F21°C and morning low of 60°F16°C. Breezy from the WNW at 5 to 8 mph8 to 13 km/h. 13% chance of drizzle. Friday Night: Partly cloudy, with a low around 59°F15°C. Light wind from the WNW around 4 mph6 km/h. 37% chance of drizzle overnight.
ClearHigh 72°F22°CLow 55°F13°CPrecip 0 in0 mmCloud 23%Wind WNW 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 12 km/h. Saturday Night: Partly cloudy, with a low around 55°F13°C. Light wind from the WNW around 4 mph6 km/h.
ClearHigh 70°F21°CLow 55°F13°CPrecip 0 in0 mmCloud 25%Wind WNW 5 mph9 km/hSunday: Mostly clear and warm, with a high of 70°F21°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 55°F13°C. Light wind from the WNW around 4 mph7 km/h.
ClearHigh 77°F25°CLow 55°F13°CPrecip 0 in0 mmCloud 18%Wind NW 4 mph7 km/hMonday: Mostly clear and warm, with a high of 77°F25°C and morning low of 59°F15°C. Breezy from the NW at 5 to 8 mph8 to 12 km/h. Dry air. Monday Night: Mostly clear, with a low around 55°F13°C. Light wind from the NW around 4 mph6 km/h.
ClearHigh 80°F27°CLow 58°F15°CPrecip 0 in0 mmCloud 30%Wind WNW 4 mph6 km/hTuesday: Partly cloudy and warm, with a high of 80°F27°C and morning low of 61°F16°C. Breezy from the WNW at 4 to 7 mph7 to 11 km/h. Dry air. Tuesday Night: Partly cloudy, with a low around 58°F15°C. Light wind from the NW around 3 mph5 km/h.
ClearHigh 82°F28°CLow 61°F16°CPrecip 0.01 in0.2 mm2%Cloud 32%Wind WNW 3 mph6 km/hWednesday: Partly cloudy and warm, with a high of 82°F28°C and morning low of 65°F18°C. Light wind from the WNW around 4 mph6 km/h. Wednesday Night: Partly cloudy, with a low around 61°F16°C. Light wind from the WNW around 3 mph5 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
ThursdaySep 371°F21°C56°F14°C0.01 in0.3 mm· 16%59%DrizzleSW 5 mph7 km/h
FridaySep 471°F21°C59°F15°C0.02 in0.6 mm· 37%41%DrizzleWNW 5 mph7 km/h
SaturdaySep 572°F22°C55°F13°C0 in0 mm· —23%ClearWNW 4 mph7 km/h
SundaySep 670°F21°C55°F13°C0 in0 mm· —25%ClearWNW 5 mph9 km/h
MondaySep 777°F25°C55°F13°C0 in0 mm· —18%ClearNW 4 mph7 km/h
TuesdaySep 880°F27°C58°F15°C0 in0 mm· —30%ClearWNW 4 mph6 km/h
WednesdaySep 982°F28°C61°F16°C0.01 in0.2 mm· 2%32%ClearWNW 3 mph6 km/h
ThursdaySep 1081°F27°C63°F17°C0.02 in0.4 mm· 2%27%ClearW 4 mph6 km/h
FridaySep 1178°F26°C61°F16°C0 in0.1 mm· 2%28%ClearW 4 mph7 km/h
SaturdaySep 1276°F24°C59°F15°C0 in0.1 mm· 2%33%ClearW 4 mph7 km/h
SundaySep 1377°F25°C59°F15°C0.02 in0.4 mm· 4%34%ClearWNW 4 mph7 km/h
MondaySep 1477°F25°C59°F15°C0.03 in0.7 mm· 5%28%ClearWNW 4 mph7 km/h
TuesdaySep 1578°F26°C59°F15°C0.02 in0.4 mm· 3%26%ClearW 4 mph6 km/h
WednesdaySep 1679°F26°C60°F16°C0.01 in0.3 mm· 4%25%ClearWNW 4 mph6 km/h
ThursdaySep 1779°F26°C61°F16°C0.01 in0.2 mm· 3%29%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: 37.3230°N, 122.0322°W·Elevation: 72m·Timezone: America/Los_Angeles·Population: 60,572