Agate Beach Weather Forecast

    • 52
    • 64

    Rain

    • 46
    • 57

    Chance Rain

    • 46
    • 59

    Mostly Cloudy

    • 45
    • 56

    Partly Sunny

    • 47
    • 59

    Partly Sunny

    • 49
    • 61

    Partly Sunny

Today 24 Sep Northern Coastal Humboldt

Mostly cloudy. Patchy fog in the morning. Highs 65 to 76. Southwest wind around 5 Mph shifting to the west in the afternoon.

Tonight 24 Sep Northern Coastal Humboldt

Cloudy. Chance of rain through the night. Patchy fog overnight. Lows 50 to 60. Southwest wind around 5 Mph.

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Agate Beach 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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