Unit Settings

Measurement preferences are saved

Temperature
Rainfall
Swell Height
Tide Height
Wind Speed
Distance
Pressure

Now

Max UV Today
10.4 Very high

Very high risk of harm from unprotected Sun exposure. Alert in effect for 8 hours between 10am–6pm.

Get WillyWeather+ to remove ads

Trending Locations

New York, NY 10007
Seattle, WA 98104
Boston, MA 02108
Columbus, OH 43215
Chicago, IL 60605
Panama City Beach, FL
Portland, OR 97209
Los Angeles, CA 90012
Austin, TX 78701
Ocean City, MD 21842

Weather Wind Rainfall Sun Moon UV Tides Swell

Weather
Wind
Rainfall
Sun
Moon
UV
Tides
Swell
Warnings
Maps
Graphs

Summerdale UV Index

United States
CA
Santa Clara County
Summerdale

Graph Plots Open in Graphs

UV Forecast NOAA

Summerdale UV forecast issued today at 12:17 pm. Next forecast at approx. 12:17 pm.

UV Index

Get WillyWeather+ to remove ads

Data Sources

Weather information based on data supplied by NOAA
© 2026 WillyWeather

Apps

iPhone App

Products

Accounts
Website Widgets
Website Warning
Advertising

WillyWeather 1.46.05

Terms and Conditions

Contact

Facebook
Twitter
Contact Us