Westborough Weather Forecast

    • 51
    • 61

    Mostly Cloudy

    • 52
    • 68

    Partly Sunny

    • 52
    • 66

    Partly Sunny

    • 52
    • 63

    Partly Sunny

    • 52
    • 64

    Mostly Sunny

    • 52
    • 66

    Mostly Sunny

    • 52
    • 69

    Mostly Sunny

Today 10 May San Francisco Bay Shoreline

Sunny. Highs in the mid 60s to lower 70s. West Winds 10 to 20 Mph.

Tonight 10 May San Francisco Bay Shoreline

Mostly clear in the evening then becoming mostly cloudy. Lows in the lower 50s. West Winds 10 to 20 Mph. Becoming southwest 5 to 10 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Westborough Temperature Statistics

May Temperature

San Francisco, San Francisco International Airport (5 miles)

  • Lowest 8 May, 2026

    53.1 °F

  • Average May

    58.8 °F

  • Highest 6 May, 2026

    67.6 °F

Climate (2021–Present)

San Francisco, San Francisco International Airport (5 miles)

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

  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    66.7 °F
Get WillyWeather+ to remove ads