Johnstown Weather Forecast

    • 48
    • 73

    Mostly Sunny

    • 50
    • 73

    Partly Sunny

    • 49
    • 71

    Mostly Sunny

    • 51
    • 74

    Mostly Sunny

    • 56
    • 78

    Mostly Sunny

    • 62
    • 81

    Mostly Cloudy

Today 31 May Cambria

Sunny. Highs in the lower 70s. Northeast Winds around 5 Mph, becoming northwest this afternoon.

Tonight 31 May Cambria

Mostly clear. Lows in the upper 40s. Northwest Winds around 5 Mph.

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Johnstown Temperature Statistics

May Temperature

Johnstown - Cambria County Airport (4.3 miles)

  • Lowest 3 May, 2026

    29.6 °F

  • Average May

    55.6 °F

  • Highest 18 May, 2026

    85.6 °F

Climate (2021–Present)

Johnstown - Cambria County Airport (4.3 miles)

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  • Average Low 2021–2026

    42.8 °F

  • Average 2021–2026

    50.6 °F

  • Average High 2021–2026

    58.6 °F
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