Westborough Weather Forecast

    • 45
    • 56

    Becoming Sunny

    • 42
    • 55

    Mostly Sunny

    • 40
    • 54

    Mostly Sunny

    • 43
    • 56

    Mostly Cloudy

    • 44
    • 56

    Partly Sunny

    • 44
    • 59

    Mostly Sunny

Today 7 Jan San Francisco Bay Shoreline

Mostly cloudy in the morning then becoming partly cloudy. Highs in the upper 50s. Northwest Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 7 Jan San Francisco Bay Shoreline

Mostly clear. Lows in the mid 40s. Northwest Winds 10 to 20 Mph.

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Westborough Temperature Statistics

January Temperature

San Francisco, San Francisco International Airport (5 miles)

  • Lowest 1 January, 2026

    51.1 °F

  • Average January

    55.6 °F

  • Highest 3 January, 2026

    63 °F

Climate (2021–Present)

San Francisco, San Francisco International Airport (5 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    58.3 °F

  • Average High 2021–2026

    66.5 °F
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