Loch Lomond Weather Forecast

    • 43
    • 49

    Rain Showers

    • 50
    • 60

    Mostly Sunny

    • 55
    • 69

    Sunny

    • 58
    • 71

    Mostly Sunny

    • 56
    • 69

    Mostly Sunny

    • 58
    • 71

    Partly Sunny

    • 57
    • 71

    Mostly Sunny

Today 26 Oct Southern Lake County

Mostly cloudy. Chance of rain in the Morning, then rain likely in the afternoon. Breezy. Highs 50 to 61. Southwest wind 20 to 25 Mph in the afternoon. Gusts up to 45 Mph.

Tonight 26 Oct Southern Lake County

Mostly cloudy in the evening then clearing. Isolated rain Showers in the evening. Lows 37 to 47. Northwest wind around 20 Mph in the evening.

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  • Temperature Real-Time

Loch Lomond Temperature Statistics

October Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (25.5 miles)

  • Lowest 12 October, 2025

    42.1 °F

  • Average October

    59.4 °F

  • Highest 7 October, 2025

    89.1 °F

Climate (2020–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (25.5 miles)

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  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    57.8 °F

  • Average High 2020–2025

    72.6 °F
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