Main Post Weather Forecast

    • 57
    • 62

    Mostly Cloudy

    • 57
    • 59

    Breezy

    • 57
    • 60

    Mostly Cloudy

    • 58
    • 61

    Partly Sunny

    • 58
    • 63

    Mostly Cloudy

    • 57
    • 61

    Mostly Cloudy

Today 23 Aug San Francisco

Mostly cloudy. Highs in the 60s to lower 70s. Southwest Winds 5 to 15 Mph.

Tonight 23 Aug San Francisco

Mostly cloudy. Lows in the upper 50s. Southwest Winds 5 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Main Post Temperature Statistics

August Temperature

San Francisco, San Francisco International Airport (13 miles)

  • Lowest 20 August, 2026

    55.9 °F

  • Average August

    65.1 °F

  • Highest 2 August, 2026

    80.7 °F

Climate (2021–2026)

San Francisco, San Francisco International Airport (13 miles)

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

  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    66.8 °F
Get WillyWeather+ to remove ads