Illinois Valley Airport Weather Forecast

    • 48
    • 84

    Mostly Sunny

    • 51
    • 90

    Increasing Clouds

    • 51
    • 90

    Partly Sunny

    • 55
    • 95

    Partly Sunny

    • 55
    • 97

    Hot

    • 52
    • 92

    Mostly Sunny

    • 51
    • 91

    Mostly Sunny

Today 30 Sep Eastern Curry County and Josephine County

Sunny. Highs in the lower 80s to lower 90s.

Tonight 30 Sep Eastern Curry County and Josephine County

Mostly clear. Lows in the lower to mid 50s. Northeast Winds 10 to 15 Mph.

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Illinois Valley Airport Temperature Statistics

September Temperature

Brookings, Brookings Airport (31.1 miles)

  • Lowest 5 September, 2026

    48 °F

  • Average September

    58.5 °F

  • Highest 8 September, 2026

    84.9 °F

Climate (2021–2026)

Brookings, Brookings Airport (31.1 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    53.4 °F

  • Average High 2021–2026

    60.6 °F
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