Illinois River State Park Weather Forecast

    • 52
    • 89

    Mostly Sunny

    • 51
    • 90

    Mostly Sunny

    • 52
    • 89

    Mostly Sunny

    • 52
    • 88

    Partly Sunny

    • 52
    • 89

    Partly Sunny

    • 52
    • 89

    Mostly Cloudy

Today 12 Aug Eastern Curry County and Josephine County

Sunny. Highs in the mid 70s to mid 80s. North Winds 5 to 10 Mph.

Tonight 12 Aug Eastern Curry County and Josephine County

Mostly clear. Lows in the mid 50s. North Winds 5 to 10 Mph in the Valleys and north 10 to 15 Mph at higher Elevations.

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Illinois River State Park Temperature Statistics

August Temperature

Brookings, Brookings Airport (32.3 miles)

  • Lowest 7 August, 2026

    51.1 °F

  • Average August

    60.5 °F

  • Highest 3 August, 2026

    90 °F

Climate (2021–2026)

Brookings, Brookings Airport (32.3 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    60.7 °F
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