The temperatures in Sunnyvale in December are quite cold with temperatures between 7°C and 15°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Sunnyvale during the month of December. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Sunnyvale in December 2024.
If you’re planning to visit Sunnyvale in the near future, we highly recommend that you review the 14 day weather forecast for Sunnyvale before you arrive.
Temperatures
15° / 7°
Rainy Days
5
Snowy Days
0
Dry Days
26
Rainfall
90
mm
Sun Hours
10.0
Hrs