Tarkio Weather Forecast

    • 69
    • 84

    Slight Chance Thunderstorms

    • 71
    • 90

    Partly Sunny

    • 65
    • 85

    Rain Showers Likely

    • 63
    • 71

    Chance Rain Showers

    • 59
    • 70

    Slight Chance Rain Showers

    • 59
    • 71

    Slight Chance Thunderstorms

Today 17 Sep Atchison

Partly sunny early this Morning, then becoming mostly sunny. A slight chance of Showers and Thunderstorms early this morning. Patchy dense fog early. Areas of dense fog this morning. Highs in the mid 80s. Northeast Winds around 5 Mph. Chance of rain 20 percent.

Tonight 17 Sep Atchison

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 60s. East Winds 5 to 10 Mph.

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Tarkio Temperature Statistics

September Temperature

Shenandoah Municipal (21.1 miles)

  • Lowest 11 September, 2026

    57.2 °F

  • Average September

    76.9 °F

  • Highest 8 September, 2026

    98.6 °F

Climate (2021–2026)

Shenandoah Municipal (21.1 miles)

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  • Average Low 2021–2026

    42.2 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    64.9 °F
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