Johnstown Weather Forecast

    • 47
    • 69

    Becoming Sunny

    • 56
    • 76

    Mostly Sunny

    • 64
    • 83

    Chance Rain Showers

    • 63
    • 84

    Rain Showers Likely

    • 58
    • 78

    Chance Rain Showers

    • 59
    • 76

    Chance Rain Showers

Today 14 Sep Cambria

Mostly sunny. Cooler. Less humid with Highs in the upper 60s. North Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 14 Sep Cambria

Mostly cloudy. Cooler with Lows in the mid 50s. Northwest Winds 5 to 10 Mph with Gusts up to 25 Mph.

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Johnstown Temperature Statistics

September Temperature

Johnstown - Cambria County Airport (4.3 miles)

  • Lowest 7 September, 2026

    52.6 °F

  • Average September

    70.2 °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

    50.7 °F

  • Average High 2021–2026

    58.7 °F
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