Westborough Weather Forecast

    • 53
    • 60

    Rain

    • 50
    • 58

    Rain

    • 48
    • 59

    Rain

    • 50
    • 58

    Rain

    • 49
    • 56

    Rain

    • 47
    • 56

    Rain

    • 44
    • 55

    Chance Rain

Today 21 Dec San Francisco Bay Shoreline

Rain. Highs in the lower 60s. South Winds 15 to 20 Mph with Gusts to around 35 Mph.

Tonight 21 Dec San Francisco Bay Shoreline

Rain. Lows in the mid 50s. Southeast Winds 10 to 20 Mph with Gusts to around 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Westborough Temperature Statistics

December Temperature

San Francisco, San Francisco International Airport (5 miles)

  • Lowest 15 December, 2025

    44.1 °F

  • Average December

    50.6 °F

  • Highest 19 December, 2025

    64 °F

Climate (2020–Present)

San Francisco, San Francisco International Airport (5 miles)

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  • Average Low 2020–2025

    52.4 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    66.5 °F
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