Harry A. Merlo State Recreation Area Weather Forecast

    • 48
    • 59

    Cloudy

    • 50
    • 62

    Decreasing Clouds

    • 48
    • 63

    Mostly Cloudy

    • 49
    • 60

    Mostly Cloudy

    • 48
    • 59

    Mostly Cloudy

    • 49
    • 60

    Mostly Cloudy

    • 50
    • 61

    Partly Sunny

Today 7 Jul Northern Coastal Humboldt

Mostly cloudy. Patchy fog in the morning. Highs 58 to 68. Northwest wind around 10 Mph.

Tonight 7 Jul Northern Coastal Humboldt

Cloudy. Patchy fog overnight. Lows 45 to 55. North wind around 10 Mph.

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Harry A. Merlo State Recreation Area Temperature Statistics

July Temperature

Arcata / Eureka, Arcata Airport (14.3 miles)

  • Lowest 1 July, 2026

    50.6 °F

  • Average July

    56.7 °F

  • Highest 1 July, 2026

    67.6 °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

    52.5 °F

  • Average High 2021–2026

    59.6 °F
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