Santa Rosa Weather Forecast

    • 53
    • 91

    Sunny

    • 53
    • 92

    Increasing Clouds

    • 51
    • 88

    Mostly Sunny

    • 49
    • 87

    Mostly Sunny

    • 48
    • 80

    Partly Sunny

    • 48
    • 76

    Partly Sunny

    • 48
    • 76

    Mostly Sunny

Today 18 May North Bay Interior Valleys

Sunny. Highs in the upper 70s to lower 90s. North Winds 5 to 15 Mph.

Tonight 18 May North Bay Interior Valleys

Clear. Lows in the 50s to lower 60s. Northwest Winds 5 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Santa Rosa Temperature Statistics

May Temperature

Santa Rosa, Santa Rosa Sonoma County Airport (6.8 miles)

  • Lowest 13 May, 2026

    44.7 °F

  • Average May

    62.2 °F

  • Highest 15 May, 2026

    82.7 °F

Climate (2021–Present)

Santa Rosa, Santa Rosa Sonoma County Airport (6.8 miles)

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

  • Average Low 2021–2026

    45.8 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    72.7 °F
Get WillyWeather+ to remove ads