Martinsburg Weather Forecast

    • 54
    • 77

    Slight Chance Thunderstorms

    • 51
    • 75

    Partly Sunny

    • 52
    • 76

    Mostly Sunny

    • 59
    • 80

    Partly Sunny

    • 67
    • 84

    Partly Sunny

    • 55
    • 78

    Slight Chance Rain Showers

Today 5 Sep Blair

Mostly cloudy with a slight chance of Showers this Morning, then partly sunny this afternoon. Highs in the upper 70s. North Winds around 5 Mph. Chance of rain 20 percent.

Tonight 5 Sep Blair

Partly cloudy. Cooler with Lows in the mid 50s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Martinsburg Temperature Statistics

September Temperature

Altoona - Blair County Airport (0.6 miles)

  • Lowest 3 September, 2026

    66 °F

  • Average September

    76.1 °F

  • Highest 1 September, 2026

    90.6 °F

Climate (2021–2026)

Altoona - Blair County Airport (0.6 miles)

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  • Average Low 2021–2026

    43 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    62.2 °F
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