Arcata Bay Weather Forecast

    • 50
    • 56

    Rain

    • 54
    • 57

    Rain

    • 51
    • 59

    Rain

    • 48
    • 54

    Rain

    • 47
    • 52

    Rain Likely

    • 45
    • 53

    Rain Likely

Today 31 Dec Northern Humboldt Coast

Mostly cloudy. Chance of rain in the afternoon. Highs 54 to 64. Southeast wind around 5 Mph shifting to the southwest in the afternoon.

Tonight 31 Dec Northern Humboldt Coast

Patchy fog through the night. Rain likely in the evening. Rain overnight. Lows 43 to 53. Northeast wind around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Arcata Bay Temperature Statistics

December Temperature

Arcata / Eureka, Arcata Airport (9.3 miles)

  • Lowest 28 December, 2025

    34 °F

  • Average December

    48.7 °F

  • Highest 16 December, 2025

    61 °F

Climate (2020–Present)

Arcata / Eureka, Arcata Airport (9.3 miles)

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  • Average Low 2020–2025

    45.5 °F

  • Average 2020–2025

    52.2 °F

  • Average High 2020–2025

    59.3 °F
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