See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
13°
Clear
Feels Like: 21°
Min: 13°
Max: 24°
The next few hours will be clear, with today reaching 24°C and dropping to 17°C. The coming days will be breezy overnight.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:56
Sunrise
19:07
Sunset
Moon
Waxing Crescent
12:44
Moonrise
21:28
Moonset
Daily Forecast
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
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Weather in Cupertino today, September 16, 2026
Cupertino sees a largely clear day on September 16, 2026, interrupted by cloudier skies around 23:00. Plan for bright conditions either side of that cloudier interval. The opening hours look fair, as cloud stays near 3% around 10:00. Morning errands should face fewer weather interruptions.
Expect highs of 24°C and cooler readings close to 13°C. Relative humidity sits between 45% and 90%, reaching its peak around 03:00. Airflow remains manageable, reaching about 5.9 km/h around 18:00.
Later hours favour clearer intervals, as cloud stays near 29% around 23:00. The afternoon is the better half for outdoor time. Horizontal visibility holds close to 16.1 km. Daylight runs from 06:56 to 19:07, lasting 12 hours 11 minutes of sunlight today.
Taken together, settled sunshine in Cupertino on September 16, 2026 makes outdoor timing easier, with highs near 24°C.
Frequently asked questions about weather in Cupertino
How warm does it get in Cupertino?
The warmest month in Cupertino is August, with average high temperatures of 26°C. The average temperature during this period is around 19°C.
How cold does it get in Cupertino?
The coldest month in Cupertino is February, with average low temperatures of 6°C. The average temperature during this period is around 11°C.
What is the wettest time of year in Cupertino?
The wettest month in Cupertino is January, with an average of 151mm of precipitation.
What is the driest time of year in Cupertino?
The driest month in Cupertino is July, with an average of 0mm of precipitation.
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