Illinois Valley Airport Weather Forecast

    • 51
    • 65

    Rain

    • 52
    • 67

    Rain Showers

    • 43
    • 68

    Rain Showers

    • 41
    • 71

    Mostly Sunny

    • 42
    • 78

    Mostly Sunny

    • 40
    • 78

    Mostly Sunny

Today 29 Sep Eastern Curry County and Josephine County

Rain. Highs in the mid 50s to mid 60s. In the Valleys, southwest Winds 5 to 10 Mph. At higher Elevations, southwest Winds 15 to 20 Mph decreasing to 5 to 10 Mph late this afternoon. Chance of rain near 100 percent.

Tonight 29 Sep Eastern Curry County and Josephine County

Mostly cloudy with Showers likely in the Evening, then partly cloudy after midnight. Lows around 50. South Winds 5 to 10 Mph. Chance of Showers 60 percent.

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Illinois Valley Airport Temperature Statistics

September Temperature

Brookings, Brookings Airport (31.1 miles)

  • Lowest 25 September, 2025

    52 °F

  • Average September

    61.1 °F

  • Highest 15 September, 2025

    82 °F

Climate (2020–Present)

Brookings, Brookings Airport (31.1 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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