Riverton Weather Forecast

    • 53
    • 68

    Chance Rain Showers

    • 50
    • 76

    Rain Showers

    • 35
    • 61

    Partly Sunny

    • 44
    • 61

    Chance Rain Showers

    • 46
    • 66

    Rain Showers Likely

Today 9 May Western Pendleton

Cloudy this Morning, then partly sunny with isolated Showers and Thunderstorms this afternoon. Highs in the upper 60s. Except in the lower 60s at the higher Elevations. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 9 May Western Pendleton

Mostly clear. Lows in the upper 40s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Riverton Temperature Statistics

May Temperature

Petersburg, Grant County Airport (23 miles)

  • Lowest 1 May, 2026

    33.8 °F

  • Average May

    56.8 °F

  • Highest 5 May, 2026

    82.9 °F

Climate (2021–Present)

Petersburg, Grant County Airport (23 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    44.2 °F

  • Average 2021–2026

    55.5 °F

  • Average High 2021–2026

    67.6 °F
Get WillyWeather+ to remove ads