Illinois River State Park Weather Forecast

    • 48
    • 84

    Becoming Sunny

    • 51
    • 88

    Sunny

    • 56
    • 92

    Sunny

    • 57
    • 97

    Hot

    • 59
    • 101

    Hot

    • 57
    • 101

    Hot

Today 18 Aug Eastern Curry County and Josephine County

Partly cloudy early this morning then clearing. Highs in the lower 70s to lower 80s. Northwest Winds around 5 Mph early this morning becoming Light, then becoming southwest 5 to 10 Mph this afternoon.

Tonight 18 Aug Eastern Curry County and Josephine County

Mostly clear. Lows in the lower to mid 50s. West Winds 5 to 10 Mph shifting to the northeast after midnight.

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Illinois River State Park Temperature Statistics

August Temperature

Brookings, Brookings Airport (32.3 miles)

  • Lowest 4 August, 2025

    50 °F

  • Average August

    65.7 °F

  • Highest 8 August, 2025

    90 °F

Climate (2020–Present)

Brookings, Brookings Airport (32.3 miles)

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  • Average Low 2020–2025

    47.1 °F

  • Average 2020–2025

    53.1 °F

  • Average High 2020–2025

    60.4 °F
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