Rio Dell Weather Forecast

    • 48
    • 64

    Mostly Cloudy

    • 48
    • 61

    Partly Sunny

    • 49
    • 64

    Partly Sunny

    • 51
    • 63

    Partly Sunny

    • 51
    • 64

    Mostly Cloudy

    • 50
    • 63

    Partly Sunny

Today 26 Sep Northern Coastal Humboldt

Mostly cloudy until early afternoon then becoming partly cloudy. Patchy fog in the morning. Highs 60 to 70. Northwest wind up to 10 Mph.

Tonight 26 Sep Northern Coastal Humboldt

Mostly cloudy. Patchy fog overnight. Lows 44 to 54. West wind around 10 Mph shifting to the south overnight.

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  • Temperature Real-Time

Rio Dell Temperature Statistics

September Temperature

Fortuna Rohnerville Airport (3.7 miles)

  • Lowest 4 September, 2026

    46.4 °F

  • Average September

    57.5 °F

  • Highest 9 September, 2026

    82.4 °F

Climate (2021–2026)

Fortuna Rohnerville Airport (3.7 miles)

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  • Average Low 2021–2026

    45.4 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    59.8 °F
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