Lake Keomah State Park Weather Forecast

    • 52
    • 62

    Slight Chance Rain Showers

    • 57
    • 68

    Chance Rain Showers

    • 60
    • 70

    Rain Showers

    • 47
    • 70

    Rain Showers

    • 44
    • 62

    Slight Chance Rain Showers

    • 44
    • 62

    Mostly Cloudy

    • 42
    • 63

    Mostly Cloudy

Today 31 Oct Mahaska

Partly sunny. Highs in the lower 60s.

Tonight 31 Oct Mahaska

Mostly cloudy with a 20 percent chance of Showers. Near steady temperature in the mid 50s. East Winds around 5 Mph.

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Lake Keomah State Park Temperature Statistics

October Temperature

Oskaloosa, Oskaloosa Municipal Airport (5 miles)

  • Lowest 17 October, 2026

    33.8 °F

  • Average October

    62.8 °F

  • Highest 11 October, 2026

    90.1 °F

Climate (2021–2026)

Oskaloosa, Oskaloosa Municipal Airport (5 miles)

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  • Average Low 2021–2026

    44 °F

  • Average 2021–2026

    54.4 °F

  • Average High 2021–2026

    65.3 °F
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