Merrimack River - Newburyport Weather Forecast

    • 53
    • 68

    Mostly Cloudy

    • 57
    • 68

    Chance Rain Showers

    • 60
    • 73

    Chance Rain Showers

    • 49
    • 73

    Mostly Sunny

    • 48
    • 63

    Mostly Sunny

    • 53
    • 67

    Partly Sunny

    • 59
    • 73

    Partly Sunny

Today 16 Sep Eastern Essex

Mostly sunny. Near steady temperature in the upper 60s. East Winds 5 to 10 Mph.

Tonight 16 Sep Eastern Essex

Mostly cloudy. Patchy fog after midnight. Lows in the mid 50s. Southeast Winds around 5 Mph, becoming north after midnight.

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Merrimack River - Newburyport Temperature Statistics

September Temperature

Lawrence Municipal Airport (14.3 miles)

  • Lowest 9 September, 2025

    48 °F

  • Average September

    64.1 °F

  • Highest 6 September, 2025

    84.9 °F

Climate (2020–Present)

Lawrence Municipal Airport (14.3 miles)

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  • Average Low 2020–2025

    43.2 °F

  • Average 2020–2025

    52.2 °F

  • Average High 2020–2025

    61.2 °F
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