Walnut, CA

Current conditions, hourly and 7-day forecast, and live radar for Walnut, CA 91788. Right now: sunny, 106°F. Data from the National Weather Service.

• This Afternoon: Sunny, with a high near 106. Heat index values as high as 110. West southwest wind around 5 mph.
• Tonight: Mostly clear, with a low around 81. Heat index values as high as 106. South southwest wind 0 to 5 mph.
• Thursday: Sunny, with a high near 99. Heat index values as high as 106. South southwest wind 0 to 5 mph.
• Thursday Night: Clear, with a low around 77. Southwest wind 0 to 5 mph.
• Friday: Sunny, with a high near 93. Southwest wind 0 to 10 mph.
• Friday Night: Clear, with a low around 73.