Agate Beach Weather Forecast

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    • 55

    Rain

    • 42
    • 50

    Rain

    • 43
    • 54

    Rain

    • 40
    • 51

    Rain

    • 40
    • 49

    Rain

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    • 51

    Rain

Today 19 Dec Northern Humboldt Coast

Rain in the Morning, then rain likely in the afternoon. Patchy fog in the afternoon. Highs 53 to 63. West wind 5 to 15 Mph shifting to the north in the afternoon.

Tonight 19 Dec Northern Humboldt Coast

Mostly cloudy. Patchy fog overnight. Lows 35 to 45. Northeast wind around 5 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Agate Beach Temperature Statistics

December Temperature

Arcata / Eureka, Arcata Airport (11.8 miles)

  • Lowest 1 December, 2025

    37 °F

  • Average December

    49.1 °F

  • Highest 16 December, 2025

    61 °F

Climate (2020–Present)

Arcata / Eureka, Arcata Airport (11.8 miles)

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  • Average Low 2020–2025

    45.4 °F

  • Average 2020–2025

    52.2 °F

  • Average High 2020–2025

    59.3 °F
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