Johnstown Weather Forecast

    • 58
    • 77

    Increasing Clouds

    • 49
    • 82

    Breezy

    • 38
    • 58

    Rain Showers

    • 35
    • 50

    Rain Showers

    • 33
    • 48

    Chance Rain Showers

    • 36
    • 52

    Mostly Cloudy

Today 22 Oct Brown

Mostly sunny. Highs in the upper 70s. South Winds around 10 Mph, increasing to 15 to 20 Mph in the afternoon.

Tonight 22 Oct Brown

Breezy. Partly cloudy. Lows in the upper 50s. South Winds 15 to 25 Mph.

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Johnstown Temperature Statistics

October Temperature

Ainsworth Regional Airport (2.5 miles)

  • Lowest 16 October, 2026

    32 °F

  • Average October

    56.9 °F

  • Highest 9 October, 2026

    89.8 °F

Climate (2021–2026)

Ainsworth Regional Airport (2.5 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    62.5 °F
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