Weather forecast for tomorrowCupertino, CA

Weather forecast for tomorrow

Sunday Oct 18, 2026

  • 77°F
  • 52°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 11mphNNW 346°
  • Humidity: 56%
  • UV index: 5
  • Sunrise: 7:19 am PDT
  • Sunset: 6:27 pm PDT
  • ▼
On Sunday, in Cupertino, uninterrupted sunshine is anticipated.
The maximum temperature will be a warm 77°F, while the minimum temperature will be a crisp 51.8°F.
The anticipated top temperature is expected to be relatively higher than the usual October maximum of 71.6°F.
Sunrise will be at 7:19 am and sunset at 6:27 pm; tomorrow's daylight will last for 11h and 8min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 75°C.
Coldest hour: 6 am 57°C.

Chance of precipitation

Highest chance: 5%.

Hourly weather forecast

  • 12 am
  • 64°F
  • Feels like:
    64°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphNNE 33°
  • Humidity: 59%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 61°F
  • Feels like:
    61°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 1mphW 275°
  • Humidity: 67%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 59°F
  • Feels like:
    59°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 1mphWSW 239°
  • Humidity: 69%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 57°F
  • Feels like:
    57°F
Mostly Clear
Mostly Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 1mphWSW 256°
  • Humidity: 71%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:19 am
  • 8 am
  • 57°F
  • Feels like:
    57°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 1mphWNW 296°
  • Humidity: 76%
  • Pressure: 30"Hg
  • Visibility: 7mi
  • UV index: 0
  • ▼
  • 10 am
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 2mphNE 37°
  • Humidity: 66%
  • Pressure: 30"Hg
  • Visibility: 9mi
  • UV index: 2
  • ▼
  • 12 pm
  • 72°F
  • Feels like:
    72°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphN 355°
  • Humidity: 52%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 2 pm
  • 75°F
  • Feels like:
    75°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphNNW 346°
  • Humidity: 45%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 73°F
  • Feels like:
    73°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphNNW 343°
  • Humidity: 43%
  • Pressure: 29.94"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 6 pm
  • 68°F
  • Feels like:
    68°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphNNW 339°
  • Humidity: 51%
  • Pressure: 29.97"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:27 pm
  • 8 pm
  • 61°F
  • Feels like:
    61°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 6mphNNW 340°
  • Humidity: 69%
  • Pressure: 30"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 57°F
  • Feels like:
    57°F
Mostly Clear
Mostly Clear
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 3mphNNW 346°
  • Humidity: 80%
  • Pressure: 30"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
Tomorrow, clear skies and sunny weather are expected.
The temperature will vary between the lowest temperature of 55.4°F and the highest temperature of 75.2°F. The warmest part of the day will be at 2 pm and 3 pm.
The maximum temperature tomorrow will be slightly warmer than October's average high. The expected low will be also resembling the average minimum in October, which is 53.8°F.
Updated: Oct 17, 2026 @ 21:54:43 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, sunshine is expected with little to no cloud cover.

Tomorrow, the maximum temperature will be 77°F, while the minimum temperature will be 51.8°F.
The maximum temperature will be relatively higher than the average highest temperature of 71.6°F in October. The lowest temperature tomorrow will be in line with the average low temperature.

On Sunday, in Cupertino, sunrise will be at 7:19 am and sunset at 6:27 pm (PDT).

In Cupertino, tomorrow, there will be 11h and 8min of daylight.