Walnut Creek UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index8.5
- Avg Clouds37%
- Max Temp32.6 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Walnut Creek, United States 
will reach a high of 8.5 today. This means a veryhigh level of sun exposure. See our tips below to stay safe!
Last checked: 2025-08-21
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
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.
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