Arcata Bay Weather Forecast

    • 53
    • 60

    Increasing Clouds

    • 55
    • 59

    Mostly Cloudy

    • 56
    • 59

    Chance Rain

    • 56
    • 61

    Rain Likely

    • 54
    • 59

    Chance Rain

    • 53
    • 59

    Mostly Cloudy

Today 30 Aug Northern Coastal Humboldt

Mostly cloudy then becoming partly cloudy late in the morning then becoming sunny. Slight chance of drizzle and patchy fog in the morning. Highs 64 to 74. Northwest wind around 10 Mph.

Tonight 30 Aug Northern Coastal Humboldt

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog. Lows 47 to 57. West wind around 10 Mph shifting to the southwest overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Arcata Bay Temperature Statistics

August Temperature

Arcata / Eureka, Arcata Airport (9.3 miles)

  • Lowest 3 August, 2026

    47.6 °F

  • Average August

    58.5 °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

    52.6 °F

  • Average High 2021–2026

    59.7 °F
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