Walnut Weather Forecast

    • 73
    • 88

    Chance Thunderstorms

    • 73
    • 94

    Mostly Sunny

    • 70
    • 91

    Partly Sunny

    • 70
    • 90

    Slight Chance Thunderstorms

    • 67
    • 89

    Slight Chance Thunderstorms

    • 62
    • 84

    Mostly Sunny

Today 15 Aug Pottawattamie

Partly sunny with a chance of Showers. A chance of Thunderstorms, mainly in the morning. Humid with Highs in the lower 90s. South Winds 10 to 15 Mph. Chance of rain 40 percent. Heat index Values up to 104 in the afternoon.

Tonight 15 Aug Pottawattamie

Mostly clear with a slight chance of Showers and Thunderstorms. Near steady temperature in the lower 70s. South Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

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Walnut Temperature Statistics

August Temperature

Harlan, Harlan Municipal Airport (9.3 miles)

  • Lowest 2 August, 2025

    51.8 °F

  • Average August

    71.1 °F

  • Highest 8 August, 2025

    89.6 °F

Climate (2020–Present)

Harlan, Harlan Municipal Airport (9.3 miles)

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  • Average Low 2020–2025

    38.6 °F

  • Average 2020–2025

    50.1 °F

  • Average High 2020–2025

    61.3 °F
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