Sudbury Weather Forecast

    • 21
    • 43

    Mostly Sunny

    • 24
    • 34

    Chance Snow

    • 29
    • 37

    Snow Likely

    • 25
    • 36

    Partly Sunny

    • 27
    • 39

    Chance Snow

    • 22
    • 41

    Chance Rain

Today 21 Dec Central Middlesex County

Sunny. Highs in the lower 40s. Temperature falling into the mid 30s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 21 Dec Central Middlesex County

Partly cloudy in the Evening, then becoming mostly clear. Lows in the lower 20s. Northwest Winds around 10 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sudbury Temperature Statistics

December Temperature

Laurence G Hanscom Field Airport (8.1 miles)

  • Lowest 9 December, 2025

    3.9 °F

  • Average December

    29.5 °F

  • Highest 19 December, 2025

    59 °F

Climate (2020–Present)

Laurence G Hanscom Field Airport (8.1 miles)

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  • Average Low 2020–2025

    41.6 °F

  • Average 2020–2025

    51.9 °F

  • Average High 2020–2025

    61.9 °F
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