Westlake Weather Forecast

    • 59
    • 64

    Increasing Clouds

    • 59
    • 63

    Mostly Cloudy

    • 58
    • 65

    Mostly Cloudy

    • 58
    • 64

    Mostly Cloudy

    • 58
    • 66

    Mostly Cloudy

    • 59
    • 70

    Partly Sunny

Today 17 Sep San Francisco Peninsula Coast

Mostly cloudy in the morning then becoming partly cloudy. A slight chance of drizzle in the morning. Highs in the upper 60s. Southwest Winds around 5 Mph.

Tonight 17 Sep San Francisco Peninsula Coast

Partly cloudy in the evening then becoming mostly cloudy. Patchy fog in the evening. Areas of fog after midnight. Lows in the 50s. West Winds around 5 Mph in the evening. Becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Westlake Temperature Statistics

September Temperature

San Francisco, San Francisco International Airport (8.7 miles)

  • Lowest 14 September, 2026

    55.9 °F

  • Average September

    68.6 °F

  • Highest 9 September, 2026

    94.6 °F

Climate (2021–2026)

San Francisco, San Francisco International Airport (8.7 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    66.8 °F
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