Lake Keomah State Park Weather Forecast

    • 37
    • 48

    Rain

    • 28
    • 47

    Rain Likely

    • 36
    • 47

    Mostly Cloudy

    • 29
    • 54

    Mostly Cloudy

    • 20
    • 40

    Mostly Cloudy

    • 22
    • 36

    Slight Chance Snow

Today 30 Jan Mahaska

Cloudy. A chance of rain this afternoon. Highs in the upper 40s. South Winds around 5 Mph. Chance of rain 30 percent.

Tonight 30 Jan Mahaska

Rain in the Evening, then rain with a slight chance of Thunderstorms after midnight. Lows in the mid 30s. East Winds 5 to 10 Mph. Chance of rain 90 percent.

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  • Temperature Real-Time

Lake Keomah State Park Temperature Statistics

January Temperature

Oskaloosa, Oskaloosa Municipal Airport (5 miles)

  • Lowest 21 January, 2025

    -10.7 °F

  • Average January

    21.7 °F

  • Highest 28 January, 2025

    57.2 °F

Climate (2020–Present)

Oskaloosa, Oskaloosa Municipal Airport (5 miles)

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  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    53.5 °F

  • Average High 2020–2025

    64.3 °F
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