Lake Keomah State Park Weather Forecast

    • 1
    • 6

    Chance Snow

    • -5
    • 13

    Slight Chance Snow

    • 9
    • 17

    Mostly Sunny

    • 4
    • 24

    Mostly Sunny

    • 1
    • 21

    Partly Sunny

    • 4
    • 17

    Partly Sunny

Today 24 Jan Mahaska

Cloudy. A slight chance of snow in the Morning, then a chance of snow in the afternoon. Highs around 5 above. East Winds 5 to 10 Mph. Chance of snow 40 percent. Wind chill Values as low as 20 below.

Tonight 24 Jan Mahaska

Cloudy, cold. Near steady temperature around 5 below. Northeast Winds around 5 Mph.

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  • Temperature Real-Time

Lake Keomah State Park Temperature Statistics

January Temperature

Oskaloosa, Oskaloosa Municipal Airport (5 miles)

  • Lowest 19 January, 2026

    1.9 °F

  • Average January

    30.1 °F

  • Highest 7 January, 2026

    60.1 °F

Climate (2021–Present)

Oskaloosa, Oskaloosa Municipal Airport (5 miles)

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  • Average Low 2021–2026

    43.6 °F

  • Average 2021–2026

    53.9 °F

  • Average High 2021–2026

    64.7 °F
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