Westborough Weather Forecast

    • 48
    • 66

    Mostly Cloudy

    • 47
    • 62

    Mostly Cloudy

    • 47
    • 64

    Mostly Sunny

    • 49
    • 66

    Mostly Sunny

    • 49
    • 67

    Mostly Sunny

    • 50
    • 67

    Partly Sunny

    • 51
    • 66

    Partly Sunny

Today 31 Jan San Francisco Bay Shoreline

Partly cloudy. Highs in the mid to upper 60s. North Winds around 5 Mph.

Tonight 31 Jan San Francisco Bay Shoreline

Partly cloudy. Patchy fog after midnight. Lows in the mid 40s. Light Winds.

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Westborough Temperature Statistics

January Temperature

San Francisco, San Francisco International Airport (5 miles)

  • Lowest 10 January, 2026

    40.6 °F

  • Average January

    53.8 °F

  • Highest 16 January, 2026

    71.7 °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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