Riverton Weather Forecast

    • 53
    • 68

    Rain Showers

    • 56
    • 78

    Mostly Sunny

    • 64
    • 84

    Partly Sunny

    • 66
    • 83

    Rain Showers

    • 65
    • 81

    Rain Showers Likely

    • 65
    • 85

    Chance Thunderstorms

Today 23 Jun Western Pendleton

Mostly cloudy with scattered Showers with a slight chance of Thunderstorms. Highs around 70. Except in the lower 60s at the higher Elevations. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

Tonight 23 Jun Western Pendleton

Mostly clear. Lows around 50. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Riverton Temperature Statistics

June Temperature

Petersburg, Grant County Airport (23 miles)

  • Lowest 3 June, 2026

    44.4 °F

  • Average June

    70.6 °F

  • Highest 11 June, 2026

    92.8 °F

Climate (2021–2026)

Petersburg, Grant County Airport (23 miles)

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  • Average Low 2021–2026

    44.2 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    67.6 °F
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