Martinsburg Weather Forecast

    • 45
    • 66

    Increasing Clouds

    • 54
    • 62

    Rain Showers

    • 45
    • 67

    Rain Showers Likely

    • 40
    • 64

    Chance Rain Showers

    • 46
    • 69

    Mostly Sunny

    • 52
    • 75

    Mostly Sunny

Today 29 Apr Keokuk

Mostly sunny. Not as warm with Highs in the mid 60s. Northwest Winds 15 to 20 Mph.

Tonight 29 Apr Keokuk

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 40s. Northeast Winds 5 to 10 Mph, becoming east after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Martinsburg Temperature Statistics

April Temperature

Ottumwa Regional Airport (11.2 miles)

  • Lowest 8 April, 2025

    24.9 °F

  • Average April

    52.9 °F

  • Highest 13 April, 2025

    79.6 °F

Climate (2020–Present)

Ottumwa Regional Airport (11.2 miles)

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  • Average Low 2020–2025

    41.8 °F

  • Average 2020–2025

    52 °F

  • Average High 2020–2025

    62.4 °F
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