Johnstown Weather Forecast

    • 39
    • 69

    Mostly Sunny

    • 41
    • 75

    Mostly Sunny

    • 44
    • 75

    Rain Showers Likely

    • 35
    • 55

    Rain Showers Likely

    • 37
    • 53

    Chance Rain Showers

    • 39
    • 64

    Slight Chance Rain Showers

Today 2 May Wind River Basin

Mostly sunny. Highs in the upper 60s. Southwest Winds around 10 Mph in the afternoon.

Tonight 2 May Wind River Basin

Mostly clear. Lows in the upper 30s. East Winds around 10 Mph, becoming southwest after midnight.

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Johnstown Temperature Statistics

May Temperature

Riverton Regional Airport (13 miles)

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  • Average May

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Climate (2020–Present)

Riverton Regional Airport (13 miles)

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  • Average Low 2020–2025

    32.6 °F

  • Average 2020–2025

    45.4 °F

  • Average High 2020–2025

    58.2 °F
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