Harry A. Merlo State Recreation Area Weather Forecast

    • 37
    • 58

    Mostly Sunny

    • 43
    • 58

    Partly Sunny

    • 44
    • 59

    Mostly Cloudy

    • 46
    • 60

    Mostly Cloudy

    • 41
    • 57

    Mostly Cloudy

    • 37
    • 54

    Partly Sunny

Today 3 Dec Northern Humboldt Coast

Sunny. Highs 56 to 66. Northwest wind around 5 Mph.

Tonight 3 Dec Northern Humboldt Coast

Partly cloudy. Areas of fog through the night. Lows 36 to 46. North wind around 5 Mph in the evening becoming light.

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Harry A. Merlo State Recreation Area Temperature Statistics

December Temperature

Arcata / Eureka, Arcata Airport (14.3 miles)

  • Lowest 1 December, 2024

    33.1 °F

  • Average December

    43.4 °F

  • Highest 1 December, 2024

    57.9 °F

Climate (2019–Present)

Arcata / Eureka, Arcata Airport (14.3 miles)

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  • Average Low 2019–2024

    45.3 °F

  • Average 2019–2024

    52 °F

  • Average High 2019–2024

    59.2 °F
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