Humboldt Bay - Indian Island Weather Forecast

    • 56
    • 65

    Decreasing Clouds

    • 56
    • 67

    Mostly Cloudy

    • 53
    • 66

    Mostly Cloudy

    • 54
    • 66

    Mostly Cloudy

    • 55
    • 66

    Partly Sunny

    • 56
    • 68

    Chance Rain

Today 18 Sep Northern Humboldt Coast

Mostly cloudy. Patchy fog in the morning. Highs 64 to 74. West wind around 10 Mph.

Tonight 18 Sep Northern Humboldt Coast

Mostly cloudy. Patchy dense fog overnight. Slight chance of rain Showers overnight. Lows 51 to 61. West wind around 10 Mph.

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  • Temperature Real-Time

Humboldt Bay - Indian Island Temperature Statistics

September Temperature

Arcata / Eureka, Arcata Airport (11.8 miles)

  • Lowest 8 September, 2025

    51.1 °F

  • Average September

    59 °F

  • Highest 8 September, 2025

    70 °F

Climate (2020–Present)

Arcata / Eureka, Arcata Airport (11.8 miles)

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  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    59.3 °F
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