Martinsburg Weather Forecast

    • 26
    • 32

    Increasing Clouds

    • 18
    • 40

    Partly Sunny

    • 27
    • 35

    Partly Sunny

    • 36
    • 46

    Partly Sunny

    • 34
    • 50

    Mostly Cloudy

    • 44
    • 54

    Mostly Cloudy

    • 36
    • 62

    Mostly Cloudy

Today 19 Dec Keokuk

Sunny. Much cooler with Highs in the upper 20s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 19 Dec Keokuk

Sunny, then becoming partly cloudy this Evening, then becoming mostly cloudy. Not as cool with Lows in the mid 20s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Martinsburg Temperature Statistics

December Temperature

Ottumwa Regional Airport (11.2 miles)

  • Lowest 13 December, 2025

    -6 °F

  • Average December

    22.2 °F

  • Highest 9 December, 2025

    46 °F

Climate (2020–Present)

Ottumwa Regional Airport (11.2 miles)

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  • Average Low 2020–2025

    41.9 °F

  • Average 2020–2025

    52.3 °F

  • Average High 2020–2025

    62.7 °F
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