Johnstown Weather Forecast

    • 56
    • 63

    Cloudy

    • 51
    • 68

    Mostly Cloudy

    • 57
    • 77

    Partly Sunny

    • 60
    • 79

    Partly Sunny

    • 51
    • 72

    Chance Rain Showers

    • 52
    • 67

    Chance Rain Showers

Today 28 Sep Cambria

Cloudy. Highs in the lower 60s. Northwest Winds 5 to 10 Mph.

Tonight 28 Sep Cambria

Cloudy. Patchy fog after midnight. Lows in the mid 50s. Northwest Winds around 5 Mph.

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Johnstown Temperature Statistics

September Temperature

Johnstown - Cambria County Airport (4.3 miles)

  • Lowest 25 September, 2026

    39.9 °F

  • Average September

    65.6 °F

  • Highest 2 September, 2026

    85.6 °F

Climate (2021–2026)

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

    58.7 °F
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