Riverton Weather Forecast

    • 64
    • 76

    Rain Showers Likely

    • 57
    • 83

    Sunny

    • 59
    • 84

    Mostly Sunny

    • 60
    • 80

    Rain Showers

    • 61
    • 82

    Rain Showers Likely

    • 60
    • 83

    Slight Chance Thunderstorms

Today 18 Jul Coastal Cumberland

Partly sunny late this Morning, then mostly cloudy with Showers likely with a chance of Thunderstorms this afternoon. Areas of smoke this afternoon. Highs in the mid 70s. South Winds around 10 Mph, increasing to 15 to 20 Mph with Gusts up to 40 Mph this afternoon. Chance of rain 70 percent.

Tonight 18 Jul Coastal Cumberland

Mostly cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a slight chance of Showers and Thunderstorms after midnight. Areas of smoke in the Evening, then patchy smoke after midnight. Humid with Lows in the lower 60s. Southwest Winds 15 to 20 Mph. Gusts up to 40 Mph in the evening. Chance of rain 60 percent.

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Riverton Temperature Statistics

July Temperature

Portland, Portland International Jetport (3.7 miles)

  • Lowest 12 July, 2026

    57.7 °F

  • Average July

    74.7 °F

  • Highest 2 July, 2026

    96.7 °F

Climate (2021–2026)

Portland, Portland International Jetport (3.7 miles)

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  • Average Low 2021–2026

    40.1 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    57.3 °F
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