Weather forecast for: Cupertino CA
Last Update: 11:26 pm PDT Sep 19, 2026
Overnight: Mostly cloudy, with a low around 56. Calm wind.
Sunday: Mostly sunny, then becoming cloudy during the afternoon, with a high near 77. Calm wind becoming north 5 to 7 mph in the afternoon.
Sunday Night: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 55. Light and variable wind.
Monday: Partly sunny, then gradually becoming sunny, with a high near 79. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Monday Night: Partly cloudy, with a low around 56. Northwest wind 5 to 7 mph becoming calm in the evening.
Tuesday: Mostly sunny, with a high near 82.
Tuesday Night: Mostly clear, with a low around 57.
Wednesday: Sunny, with a high near 89.
Wednesday Night: Partly cloudy, with a low around 60.
Thursday: Sunny, with a high near 92.
Thursday Night: Partly cloudy, with a low around 61.
Friday: Mostly sunny, with a high near 86.
Friday Night: Partly cloudy, with a low around 58.
Saturday: Mostly sunny, with a high near 82.
WeatherWorld.com
City of Cupertino, CA
