Arcata Bay Weather Forecast

    • 50
    • 57

    Increasing Clouds

    • 51
    • 60

    Rain

    • 49
    • 56

    Rain

    • 49
    • 56

    Rain

    • 48
    • 55

    Rain Likely

    • 47
    • 55

    Partly Sunny

    • 49
    • 57

    Partly Sunny

Today 18 Apr Northern Humboldt Coast

Mostly cloudy in the morning then becoming partly cloudy. Patchy fog in the morning. Highs 58 to 69. Northwest wind around 10 Mph.

Tonight 18 Apr Northern Humboldt Coast

Mostly cloudy. Patchy fog overnight. Lows 42 to 52. Northwest wind around 5 Mph shifting to the southeast overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Arcata Bay Temperature Statistics

April Temperature

Arcata / Eureka, Arcata Airport (9.3 miles)

  • Lowest 16 April, 2026

    32 °F

  • Average April

    50.8 °F

  • Highest 4 April, 2026

    68.6 °F

Climate (2021–Present)

Arcata / Eureka, Arcata Airport (9.3 miles)

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  • Average Low 2021–2026

    45.7 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    59.6 °F
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