Harry A. Merlo State Recreation Area Weather Forecast

    • 51
    • 63

    Mostly Cloudy

    • 54
    • 67

    Mostly Cloudy

    • 51
    • 62

    Mostly Cloudy

    • 51
    • 62

    Mostly Cloudy

    • 50
    • 60

    Partly Sunny

    • 50
    • 60

    Mostly Cloudy

    • 50
    • 57

    Mostly Cloudy

Today 25 Aug Northern Coastal Humboldt

Mostly cloudy until early afternoon then becoming mostly sunny. Patchy drizzle and fog in the morning. Highs 62 to 73. West wind around 10 Mph.

Tonight 25 Aug Northern Coastal Humboldt

Mostly cloudy. Patchy fog overnight. Lows 48 to 58. North wind around 5 Mph.

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Harry A. Merlo State Recreation Area Temperature Statistics

August Temperature

Arcata / Eureka, Arcata Airport (14.3 miles)

  • Lowest 3 August, 2026

    47.6 °F

  • Average August

    58.6 °F

  • Highest 1 August, 2026

    71.7 °F

Climate (2021–2026)

Arcata / Eureka, Arcata Airport (14.3 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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