Mad River Beach Weather Forecast

    • 45
    • 58

    Mostly Cloudy

    • 49
    • 58

    Mostly Cloudy

    • 47
    • 57

    Mostly Cloudy

    • 44
    • 57

    Mostly Sunny

    • 48
    • 60

    Mostly Cloudy

    • 46
    • 59

    Partly Sunny

    • 47
    • 60

    Mostly Sunny

Today 15 May Northern Humboldt Coast

Mostly cloudy. Highs 55 to 65. Northwest wind 5 to 15 Mph.

Tonight 15 May Northern Humboldt Coast

Mostly cloudy. Patchy fog overnight. Lows 41 to 51. Northwest wind 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mad River Beach Temperature Statistics

May Temperature

Arcata / Eureka, Arcata Airport (3.1 miles)

  • Lowest 4 May, 2025

    36.6 °F

  • Average May

    51.7 °F

  • Highest 5 May, 2025

    73.7 °F

Climate (2020–Present)

Arcata / Eureka, Arcata Airport (3.1 miles)

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  • Average Low 2020–2025

    45.2 °F

  • Average 2020–2025

    52 °F

  • Average High 2020–2025

    59.3 °F
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