Rio Dell Weather Forecast

    • 49
    • 66

    Increasing Clouds

    • 45
    • 59

    Partly Sunny

    • 47
    • 64

    Mostly Sunny

    • 47
    • 66

    Partly Sunny

    • 48
    • 63

    Mostly Cloudy

    • 52
    • 63

    Chance Rain

Today 18 Oct Northern Humboldt Coast

Mostly cloudy in the morning then clearing. Patchy fog in the morning. Highs 61 to 72. South wind around 5 Mph shifting to the northwest in the afternoon.

Tonight 18 Oct Northern Humboldt Coast

Partly cloudy. Patchy fog. Lows 44 to 54. Northwest wind around 5 Mph shifting to the southeast overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rio Dell Temperature Statistics

October Temperature

Fortuna Rohnerville Airport (3.7 miles)

  • Lowest 14 October, 2025

    41 °F

  • Average October

    55 °F

  • Highest 6 October, 2025

    82.4 °F

Climate (2020–Present)

Fortuna Rohnerville Airport (3.7 miles)

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  • Average Low 2020–2025

    45.1 °F

  • Average 2020–2025

    51.2 °F

  • Average High 2020–2025

    59.5 °F
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