Fortuna Weather Forecast

    • 56
    • 70

    Rain Showers

    • 55
    • 65

    Rain Showers

    • 54
    • 67

    Mostly Cloudy

    • 53
    • 68

    Patchy Fog

    • 55
    • 69

    Chance Rain

    • 53
    • 67

    Chance Rain

    • 53
    • 68

    Partly Sunny

Today 9 Sep Northern Humboldt Coast

Patchy fog in the morning. Chance of rain in the Morning, then rain Showers and slight chance of Thunderstorms in the afternoon. Highs 63 to 73. Southeast wind around 5 Mph shifting to the west in the afternoon.

Tonight 9 Sep Northern Humboldt Coast

Mostly cloudy. Scattered rain Showers in the Evening, then isolated rain Showers overnight. Patchy fog overnight. Lows 51 to 61. Northwest wind around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Fortuna Temperature Statistics

September Temperature

Fortuna Rohnerville Airport (3.1 miles)

  • Lowest 7 September, 2025

    51.8 °F

  • Average September

    57.4 °F

  • Highest 6 September, 2025

    68 °F

Climate (2020–Present)

Fortuna Rohnerville Airport (3.1 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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