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Walnut Creek UV Index Today

Day Summary

The UV index in Walnut Creek, United States Flag of United States will reach a high of 9.6 today. This means a veryhigh level of sun exposure. See our tips below to stay safe!

Last checked: 2025-08-01

Hourly Forecast Chart

Today's Safety Tips

The risk is very high. It's best to stay out of the sun between 10 a.m. and 4 p.m. If you must be outside, wear protective clothing and apply sunscreen often.

Walnut Creek's UV Index

The UV index in Walnut Creek ranges from low to moderate, typically between 2 and 7 throughout the year, peaking in summer months. This means sun exposure varies but is often strongest from late spring to early fall.

Weather Seasons

UV index

Walnut Creek experiences warm, dry summers and mild, wet winters. Summer temperatures often reach into the 80s and 90s (Fahrenheit), while winter temperatures usually stay between the 40s and 60s. Rain mostly falls from November to March.

Walnut Creek's Climate

Compared to other parts of California, Walnut Creek has less extreme heat than inland areas and more sunshine than coastal cities like San Francisco. It is warmer and drier than northern states and has milder winters than many parts of the western United States.

Hourly UV Index Trend

See the UV index hour by hour for Walnut Creek. When the level is high, it's smart to find some shade.

Disclaimer

* The information on this page about the UV index in Walnut Creek is for educational purposes only. It is not a substitute for professional medical advice. Always consult a doctor for any health concerns.