Walnut Weather Forecast

    • 72
    • 82

    Rain Showers

    • 64
    • 84

    Chance Rain Showers

    • 62
    • 80

    Mostly Sunny

    • 67
    • 82

    Mostly Cloudy

    • 62
    • 80

    Slight Chance Rain Showers

    • 60
    • 77

    Slight Chance Thunderstorms

Today 15 Aug Bureau

Showers with a chance of Thunderstorms early this Morning, then a slight chance of Showers and Thunderstorms this afternoon. Some Thunderstorms may produce heavy rainfall early this morning. Locally heavy rainfall possible early. Humid with Highs in the lower 80s. Southeast Winds 5 to 10 Mph, becoming southwest this afternoon. Chance of rain near 100 percent.

Tonight 15 Aug Bureau

Mostly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then Showers likely with a chance of Thunderstorms after midnight. Humid with Lows in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 70 percent.

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Walnut Temperature Statistics

August Temperature

Sterling Rockfalls (13 miles)

  • Lowest 3 August, 2026

    59 °F

  • Average August

    73.3 °F

  • Highest 4 August, 2026

    84.9 °F

Climate (2021–2026)

Sterling Rockfalls (13 miles)

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  • Average Low 2021–2026

    42 °F

  • Average 2021–2026

    52.1 °F

  • Average High 2021–2026

    62.2 °F
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