Middletown Weather Forecast

    • 46
    • 93

    Sunny

    • 55
    • 94

    Sunny

    • 56
    • 92

    Mostly Sunny

    • 49
    • 83

    Partly Sunny

    • 46
    • 83

    Mostly Sunny

    • 48
    • 81

    Partly Sunny

    • 42
    • 79

    Partly Sunny

Today 18 Mar Southern Lake County

Sunny. Highs 83 to 93.

Tonight 18 Mar Southern Lake County

Clear. Lows 53 to 63.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Middletown Temperature Statistics

March Temperature

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

  • Lowest 11 March, 2026

    39 °F

  • Average March

    58.9 °F

  • Highest 16 March, 2026

    88 °F

Climate (2021–Present)

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

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    45.7 °F

  • Average 2021–2026

    58.2 °F

  • Average High 2021–2026

    72.7 °F
Get WillyWeather+ to remove ads