Arcata Bay - Eureka Slough Bridge Weather Forecast

    • 51
    • 61

    Slight Chance Rain

    • 50
    • 61

    Mostly Cloudy

    • 50
    • 59

    Partly Sunny

    • 51
    • 60

    Partly Sunny

    • 52
    • 61

    Partly Sunny

    • 53
    • 62

    Partly Sunny

Today 25 Sep Northern Coastal Humboldt

Mostly cloudy until early afternoon then becoming partly cloudy. Patchy fog in the morning. Isolated rain Showers in the morning. Highs 56 to 66. Northwest wind 5 to 15 Mph.

Tonight 25 Sep Northern Coastal Humboldt

Mostly cloudy. Lows 44 to 54. North wind 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Arcata Bay - Eureka Slough Bridge Temperature Statistics

September Temperature

Arcata / Eureka, Arcata Airport (11.8 miles)

  • Lowest 5 September, 2026

    46.7 °F

  • Average September

    58.4 °F

  • Highest 9 September, 2026

    75.7 °F

Climate (2021–2026)

Arcata / Eureka, Arcata Airport (11.8 miles)

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  • Average Low 2021–2026

    45.8 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    59.7 °F
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