Westborough Weather Forecast

    • 47
    • 59

    Increasing Clouds

    • 46
    • 60

    Partly Sunny

    • 47
    • 60

    Partly Sunny

    • 49
    • 60

    Partly Sunny

    • 49
    • 62

    Partly Sunny

    • 49
    • 63

    Mostly Sunny

    • 48
    • 63

    Mostly Sunny

Today 6 Dec San Francisco Bay Shoreline

Sunny. Highs around 60. Northwest Winds 5 to 10 Mph.

Tonight 6 Dec San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 40s. Northwest Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Westborough Temperature Statistics

December Temperature

San Francisco, San Francisco International Airport (5 miles)

  • Lowest 2 December, 2025

    45 °F

  • Average December

    51.7 °F

  • Highest 3 December, 2025

    63 °F

Climate (2020–Present)

San Francisco, San Francisco International Airport (5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    52.4 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    66.5 °F
Get WillyWeather+ to remove ads