Middletown Weather Forecast

    • 51
    • 87

    Sunny

    • 56
    • 90

    Sunny

    • 54
    • 95

    Sunny

    • 49
    • 89

    Sunny

    • 47
    • 84

    Sunny

    • 52
    • 82

    Sunny

Today 16 Jun Southern Lake County

Sunny. Highs 75 to 89.

Tonight 16 Jun Southern Lake County

Clear. Lows 51 to 61.

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Middletown Temperature Statistics

June Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (20.5 miles)

  • Lowest 12 June, 2025

    45 °F

  • Average June

    62.3 °F

  • Highest 12 June, 2025

    78.1 °F

Climate (2020–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (20.5 miles)

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  • Average Low 2020–2025

    45.3 °F

  • Average 2020–2025

    57.7 °F

  • Average High 2020–2025

    72.8 °F
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