Martinsburg Weather Forecast

    • 73
    • 96

    Mostly Sunny

    • 70
    • 96

    Mostly Sunny

    • 67
    • 88

    Chance Rain Showers

    • 69
    • 87

    Partly Sunny

    • 75
    • 95

    Chance Thunderstorms

    • 67
    • 91

    Chance Rain Showers

    • 64
    • 85

    Partly Sunny

Today 4 Sep Keokuk

Sunny, hot. Near steady temperature in the mid 90s. Southwest Winds around 10 Mph. Heat index Values up to 104.

Tonight 4 Sep Keokuk

Mostly clear. Lows in the lower 70s. Southwest Winds around 5 Mph. Heat index Values up to 100 early this evening.

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Martinsburg Temperature Statistics

September Temperature

Ottumwa Regional Airport (11.2 miles)

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  • Average September

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Climate (2021–2026)

Ottumwa Regional Airport (11.2 miles)

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  • Average Low 2021–2026

    41.9 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    63.3 °F
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