Merlo Lake Weather Forecast

    • 53
    • 82

    Becoming Sunny

    • 54
    • 85

    Partly Sunny

    • 59
    • 92

    Mostly Sunny

    • 59
    • 94

    Mostly Sunny

    • 59
    • 94

    Mostly Sunny

    • 58
    • 92

    Partly Sunny

Today 6 Jul North Bay Interior Valleys

Mostly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the upper 60s to lower 80s. Southwest Winds 10 to 20 Mph.

Tonight 6 Jul North Bay Interior Valleys

Mostly clear in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the upper 40s to mid 50s. Southwest Winds 10 to 20 Mph.

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  • Temperature Real-Time

Merlo Lake Temperature Statistics

July Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (16.2 miles)

  • Lowest 1 July, 2026

    46.4 °F

  • Average July

    63.5 °F

  • Highest 3 July, 2026

    80.1 °F

Climate (2021–2026)

Santa Rosa, Santa Rosa Sonoma County Airport (16.2 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    72.7 °F
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