Arcata Bay Weather Forecast

    • 57
    • 61

    Decreasing Clouds

    • 55
    • 62

    Mostly Cloudy

    • 54
    • 59

    Mostly Cloudy

    • 54
    • 59

    Mostly Cloudy

    • 54
    • 59

    Mostly Cloudy

    • 53
    • 59

    Mostly Cloudy

Today 23 Aug Northern Coastal Humboldt

Mostly cloudy in the morning then becoming partly cloudy. Highs 63 to 78. Northwest wind up to 10 Mph.

Tonight 23 Aug Northern Coastal Humboldt

Mostly cloudy. Patchy dense fog overnight. Lows 51 to 61. West wind around 10 Mph shifting to the southeast overnight.

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Arcata Bay Temperature Statistics

August Temperature

Arcata / Eureka, Arcata Airport (9.3 miles)

  • Lowest 3 August, 2026

    47.6 °F

  • Average August

    58.4 °F

  • Highest 1 August, 2026

    71.7 °F

Climate (2021–2026)

Arcata / Eureka, Arcata Airport (9.3 miles)

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  • Average Low 2021–2026

    45.7 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    59.7 °F
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