Island Mountain Weather Forecast

    • 42
    • 59

    Decreasing Clouds

    • 42
    • 56

    Partly Sunny

    • 46
    • 61

    Mostly Sunny

    • 51
    • 67

    Mostly Sunny

    • 47
    • 68

    Mostly Sunny

    • 39
    • 55

    Chance Rain Showers

Today 14 Oct Northeastern Mendocino Interior

Mostly cloudy. Patchy valley fog in the morning. Slight chance of rain Showers through the day. Highs 58 to 73. Gusts up to 30 Mph.

Tonight 14 Oct Northeastern Mendocino Interior

Partly cloudy. Slight chance of rain Showers through the night. Patchy valley fog overnight. Lows 36 to 46.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Island Mountain Temperature Statistics

October Temperature

Fortuna Rohnerville Airport (52.8 miles)

  • Lowest 9 October, 2025

    44.6 °F

  • Average October

    56.7 °F

  • Highest 6 October, 2025

    82.4 °F

Climate (2020–Present)

Fortuna Rohnerville Airport (52.8 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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