Island Mountain Weather Forecast

    • 48
    • 73

    Decreasing Clouds

    • 47
    • 66

    Mostly Sunny

    • 52
    • 72

    Sunny

    • 48
    • 75

    Mostly Sunny

    • 44
    • 69

    Mostly Sunny

    • 43
    • 62

    Mostly Sunny

Today 15 Jun Northeastern Mendocino Interior

Mostly cloudy in the morning then clearing. Highs 78 to 93.

Tonight 15 Jun Northeastern Mendocino Interior

Clear. Lows 45 to 55.

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Island Mountain Temperature Statistics

June Temperature

Fortuna Rohnerville Airport (52.8 miles)

  • Lowest 3 June, 2025

    41 °F

  • Average June

    52.4 °F

  • Highest 4 June, 2025

    64.4 °F

Climate (2020–Present)

Fortuna Rohnerville Airport (52.8 miles)

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  • Average Low 2020–2025

    45 °F

  • Average 2020–2025

    51.2 °F

  • Average High 2020–2025

    59.5 °F
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