Cooks Valley Weather Forecast

    • 51
    • 84

    Mostly Sunny

    • 51
    • 86

    Mostly Sunny

    • 52
    • 80

    Mostly Sunny

    • 52
    • 78

    Mostly Sunny

    • 51
    • 84

    Mostly Sunny

    • 53
    • 86

    Mostly Sunny

    • 52
    • 84

    Partly Sunny

Today 14 Sep Southeastern Interior Humboldt

Sunny. Highs 72 to 87.

Tonight 14 Sep Southeastern Interior Humboldt

Mostly clear. Lows 46 to 56.

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  • Temperature Real-Time

Cooks Valley Temperature Statistics

September Temperature

Fortuna Rohnerville Airport (41.6 miles)

  • Lowest 4 September, 2026

    46.4 °F

  • Average September

    58.5 °F

  • Highest 9 September, 2026

    82.4 °F

Climate (2021–2026)

Fortuna Rohnerville Airport (41.6 miles)

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  • Average Low 2021–2026

    45.4 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    59.8 °F
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