Riverton Weather Forecast

    • 54
    • 70

    Chance Rain Showers

    • 55
    • 70

    Chance Rain Showers

    • 54
    • 81

    Mostly Sunny

    • 56
    • 84

    Mostly Sunny

    • 59
    • 81

    Mostly Cloudy

    • 57
    • 77

    Partly Sunny

Today 16 Sep Western Pendleton

Mostly cloudy with a 20 percent chance of Showers. Highs in the lower 70s. Except in the mid 60s at the higher Elevations. Northeast Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 16 Sep Western Pendleton

Mostly cloudy with a 40 percent chance of Showers. Lows in the lower 50s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Riverton Temperature Statistics

September Temperature

Petersburg, Grant County Airport (23 miles)

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Climate (2020–Present)

Petersburg, Grant County Airport (23 miles)

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  • Average Low 2020–2025

    44.2 °F

  • Average 2020–2025

    55.3 °F

  • Average High 2020–2025

    67.4 °F
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