Big Lagoon Weather Forecast

    • 54
    • 63

    Mostly Cloudy

    • 55
    • 63

    Mostly Cloudy

    • 55
    • 64

    Mostly Cloudy

    • 53
    • 63

    Mostly Cloudy

    • 53
    • 64

    Mostly Cloudy

    • 54
    • 64

    Mostly Cloudy

    • 55
    • 63

    Chance Rain

Today 17 Sep Northern Humboldt Coast

Mostly cloudy in the morning then clearing. Patchy fog in the morning. Highs 65 to 75. Northwest wind 5 to 15 Mph.

Tonight 17 Sep Northern Humboldt Coast

Partly cloudy early in the evening then becoming mostly cloudy. Patchy fog overnight. Lows 50 to 60. Northwest wind around 10 Mph shifting to the southwest overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Lagoon Temperature Statistics

September Temperature

Arcata / Eureka, Arcata Airport (12.4 miles)

  • Lowest 8 September, 2025

    51.1 °F

  • Average September

    58.9 °F

  • Highest 8 September, 2025

    70 °F

Climate (2020–Present)

Arcata / Eureka, Arcata Airport (12.4 miles)

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  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    52.1 °F

  • Average High 2020–2025

    59.3 °F
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