Merrimac Weather Forecast

    • 55
    • 70

    Mostly Cloudy

    • 65
    • 78

    Partly Sunny

    • 56
    • 79

    Chance Rain Showers

    • 46
    • 69

    Partly Sunny

    • 46
    • 64

    Chance Rain Showers

    • 40
    • 64

    Mostly Sunny

Today 30 Sep Western Essex

Partly sunny. Highs in the lower 70s. Light and variable Winds, becoming southwest around 5 Mph in the afternoon.

Tonight 30 Sep Western Essex

Mostly cloudy. Patchy fog after midnight. Lows in the mid 50s. South Winds around 5 Mph.

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  • Temperature Real-Time

Merrimac Temperature Statistics

September Temperature

Lawrence Municipal Airport (9.9 miles)

  • Lowest 23 September, 2026

    43 °F

  • Average September

    62.7 °F

  • Highest 10 September, 2026

    86 °F

Climate (2021–2026)

Lawrence Municipal Airport (9.9 miles)

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  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    60.8 °F
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