Westborough Weather Forecast

    • 50
    • 60

    Mostly Cloudy

    • 50
    • 58

    Mostly Cloudy

    • 49
    • 59

    Mostly Sunny

    • 51
    • 64

    Mostly Sunny

    • 51
    • 63

    Mostly Cloudy

    • 50
    • 61

    Partly Sunny

    • 49
    • 61

    Mostly Sunny

Today 24 May San Francisco Bay Shoreline

Partly cloudy late in the morning then becoming sunny. Highs in the mid 60s to lower 70s. West Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 24 May San Francisco Bay Shoreline

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

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Westborough Temperature Statistics

May Temperature

San Francisco, San Francisco International Airport (5 miles)

  • Lowest 22 May, 2026

    50 °F

  • Average May

    60.4 °F

  • Highest 19 May, 2026

    82.7 °F

Climate (2021–Present)

San Francisco, San Francisco International Airport (5 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    66.8 °F
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