Chelmsford Weather Forecast

    • 55
    • 83

    Becoming Sunny

    • 59
    • 83

    Sunny

    • 65
    • 89

    Mostly Sunny

    • 67
    • 91

    Mostly Sunny

    • 70
    • 93

    Mostly Sunny

    • 69
    • 93

    Partly Sunny

Today 8 Aug Central Middlesex County

Mostly sunny. Highs in the lower 80s. South Winds around 5 Mph.

Tonight 8 Aug Central Middlesex County

Mostly clear. Lows in the mid 50s. South Winds around 5 Mph in the Evening, becoming light and variable.

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Chelmsford Temperature Statistics

August Temperature

Laurence G Hanscom Field Airport (9.3 miles)

  • Lowest 2 August, 2025

    47.6 °F

  • Average August

    67.5 °F

  • Highest 4 August, 2025

    87.7 °F

Climate (2020–Present)

Laurence G Hanscom Field Airport (9.3 miles)

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  • Average Low 2020–2025

    41.7 °F

  • Average 2020–2025

    52 °F

  • Average High 2020–2025

    62 °F
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