Johnstown Weather Forecast

    • 61
    • 68

    Rain Showers

    • 59
    • 76

    Chance Rain Showers

    • 61
    • 79

    Chance Rain Showers

    • 60
    • 79

    Chance Thunderstorms

    • 53
    • 76

    Slight Chance Rain Showers

    • 50
    • 71

    Partly Sunny

Today 24 May Cambria

Mostly cloudy. A slight chance of Showers this Morning, then a chance of Showers with a slight chance of Thunderstorms this afternoon. Areas of fog. Not as cool with Highs in the mid 60s. Southeast Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.

Tonight 24 May Cambria

A slight chance of Thunderstorms in the evening. Showers. Not as cool with Lows around 60. Southeast Winds 5 to 10 Mph. Chance of rain 80 percent.

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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

    54.1 °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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