South Chelmsford Weather Forecast

    • 51
    • 76

    Sunny

    • 55
    • 79

    Mostly Sunny

    • 66
    • 84

    Partly Sunny

    • 74
    • 92

    Mostly Sunny

    • 71
    • 97

    Chance Rain Showers

    • 67
    • 87

    Chance Rain Showers

    • 67
    • 85

    Slight Chance Thunderstorms

Today 21 Jul Central Middlesex County

Mostly sunny and cooler. Near steady temperature in the mid 70s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 21 Jul Central Middlesex County

Clear, cooler with Lows in the lower 50s. North Winds 5 to 10 Mph.

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  • Temperature Real-Time

South Chelmsford Temperature Statistics

July Temperature

Laurence G Hanscom Field Airport (8.1 miles)

  • Lowest 19 July, 2025

    53.1 °F

  • Average July

    77.2 °F

  • Highest 16 July, 2025

    94.6 °F

Climate (2020–Present)

Laurence G Hanscom Field Airport (8.1 miles)

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  • Average Low 2020–2025

    41.8 °F

  • Average 2020–2025

    52 °F

  • Average High 2020–2025

    62.1 °F
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