Westborough Weather Forecast

    • 55
    • 67

    Mostly Sunny

    • 56
    • 71

    Partly Sunny

    • 55
    • 73

    Partly Sunny

    • 55
    • 72

    Mostly Sunny

    • 55
    • 73

    Partly Sunny

    • 56
    • 71

    Partly Sunny

Today 30 Jul San Francisco Bay Shoreline

Sunny. Highs in the 70s to lower 80s. West Winds 10 to 20 Mph.

Tonight 30 Jul San Francisco Bay Shoreline

Mostly clear. Lows in the upper 50s. West Winds 10 to 20 Mph. Becoming south 10 to 15 Mph after midnight.

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Westborough Temperature Statistics

July Temperature

San Francisco, San Francisco International Airport (5 miles)

  • Lowest 11 July, 2026

    53.7 °F

  • Average July

    64.8 °F

  • Highest 21 July, 2026

    92.6 °F

Climate (2021–2026)

San Francisco, San Francisco International Airport (5 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    66.8 °F
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