Illinois River State Park Weather Forecast

    • 27
    • 67

    Decreasing Clouds

    • 33
    • 69

    Partly Sunny

    • 39
    • 74

    Mostly Cloudy

    • 38
    • 69

    Chance Rain

    • 31
    • 59

    Slight Chance Rain

    • 35
    • 63

    Mostly Sunny

Today 21 Mar Eastern Curry County and Josephine County

Mostly cloudy in the morning then clearing. Highs in the mid 50s to mid 60s. North Winds 5 to 10 Mph.

Tonight 21 Mar Eastern Curry County and Josephine County

Mostly clear. Widespread frost after midnight. Lows in the mid 20s to mid 30s in the Valleys and in the mid 30s to lower 40s at higher Elevations. Northeast Winds 5 to 10 Mph.

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  • Temperature Real-Time

Illinois River State Park Temperature Statistics

March Temperature

Brookings, Brookings Airport (32.3 miles)

  • Lowest 11 March, 2026

    37.9 °F

  • Average March

    51.4 °F

  • Highest 16 March, 2026

    70 °F

Climate (2021–Present)

Brookings, Brookings Airport (32.3 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    53.3 °F

  • Average High 2021–2026

    60.6 °F
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