Irmulco Weather Forecast

    • 46
    • 67

    Increasing Clouds

    • 45
    • 67

    Mostly Sunny

    • 50
    • 75

    Sunny

    • 52
    • 82

    Mostly Sunny

    • 51
    • 79

    Partly Sunny

    • 50
    • 75

    Mostly Sunny

Today 29 May Southwestern Mendocino Interior

Mostly cloudy until early afternoon then clearing. Highs 63 to 74.

Tonight 29 May Southwestern Mendocino Interior

Partly cloudy. Patchy valley fog overnight. Lows 42 to 52.

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Irmulco Temperature Statistics

May Temperature

Ukiah Municipal Airport (25.5 miles)

  • Lowest 18 May, 2026

    42.7 °F

  • Average May

    65.8 °F

  • Highest 11 May, 2026

    94.6 °F

Climate (2021–Present)

Ukiah Municipal Airport (25.5 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    61 °F

  • Average High 2021–2026

    76.3 °F
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