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Walnut, CA Weather Tomorrow

The extended forecast for Walnut begins with tomorrow's weather and continues through the next 5 days with precipitation chances, day and night conditions, high and low temperatures in Fahrenheit and Celsius, sunrise, sunset, sky conditions, wind chill, and wind speed with direction for the Walnut area and around Los Angeles county, California.
Updated: Tue Oct 13th 2026 11:45 AM PDT
Walnut, CA Weather – 10-13 – Sunny
73° / 60°
Sunny
Daytime highs will reach 73°F with lows dropping to 60°F in Walnut, where bright and sunny conditions. There's a very small chance of rainfall, only about 1%. Winds will be light at 6mph and gusts of 10.5mph at 10 PM. Humidity levels should be comfortable, sitting around 46% on average, the maximum being 42% at 11 PM and 30% being its lowest at 5 PM. Barometric pressure is its highest of 30.04inHg at 11 PM, a lowest point of 29.94inHg at 3 PM with an avg 29.98inHg.
Walnut, CA Weather – 10-14 – Sunny
82° / 63°

Weather Tomorrow

Sunny
It will be sunny in Walnut, with a high of 82°F and a low of 63°F. Winds will be light at 9mph and gusts of 20.1mph at 6 PM. The air will be relatively dry with average humidity levels below 30%, the maximum being 44% at 1 AM and 10% being its lowest at 3 PM. Barometric pressure is its highest of 30.08inHg at 9 AM, a lowest point of 29.97inHg at 4 PM with an avg 30.03inHg.
Walnut, CA Weather – 10-15 – Sunny
89° / 68°
Sunny
In Walnut, a sunny day is likely with a high near 89°F and a low around 68°F. Wind will be moderate, blowing around 14mph on average and gusts of 24.6mph at 11 PM. The air will be relatively dry with average humidity levels below 30%, the maximum being 30% at 12 AM and 10% being its lowest at 1 PM. Barometric pressure is its highest of 30.02inHg at 9 AM, a lowest point of 29.91inHg at 5 PM with an avg 29.97inHg.
Walnut, CA Weather – 10-16 – Sunny
91° / 74°
Sunny
In Walnut, bright and sunny conditions with highs near 91°F and lows around 74°F. Wind will be moderate, blowing around 16mph on average and gusts of 31.4mph at 5 AM. The air will be relatively dry with average humidity levels below 30%, the maximum being 23% at 7 AM and 14% being its lowest at 1 PM. Barometric pressure is its highest of 30.01inHg at 9 AM, a lowest point of 29.92inHg at 5 PM with an avg 29.96inHg.
Walnut, CA Weather – 10-17 – Sunny
90° / 74°
Sunny
Highs will reach 90°F with lows near 74°F in Walnut, where sunshine is. Winds will be light at 10mph and gusts of 20.1mph at 5 PM. The air will be relatively dry with average humidity levels below 30%, the maximum being 27% at 11 PM and 16% being its lowest at 4 PM. Barometric pressure is its highest of 29.96inHg at 9 AM, a lowest point of 29.85inHg at 5 PM with an avg 29.92inHg.
Walnut, CA Weather – 10-18 – Sunny
87° / 74°
Sunny
Daytime highs will reach 87°F with lows dropping to 74°F in Walnut, where it will be sunny. Winds will be light at 9mph and gusts of 20.1mph at 5 PM. The air will be relatively dry with average humidity levels below 30%, the maximum being 40% at 11 PM and 19% being its lowest at 2 PM. Barometric pressure is its highest of 29.94inHg at 11 PM, a lowest point of 29.88inHg at 5 PM with an avg 29.91inHg.

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