Lunenburg Weather Forecast

    • 57
    • 81

    Becoming Sunny

    • 45
    • 77

    Mostly Sunny

    • 42
    • 69

    Mostly Sunny

    • 48
    • 72

    Partly Sunny

    • 55
    • 76

    Mostly Sunny

    • 59
    • 82

    Partly Sunny

Today 18 Sep Northern Worcester

Partly sunny with a slight chance of Showers in the Morning, then sunny in the afternoon. Patchy fog in the morning. Highs in the upper 70s. North Winds around 5 Mph, becoming west in the afternoon. Chance of rain 20 percent.

Tonight 18 Sep Northern Worcester

Mostly cloudy with a 50 percent chance of Showers. Patchy fog. Near steady temperature in the mid 50s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lunenburg Temperature Statistics

September Temperature

Fitchburg, Fitchburg Municipal Airport (3.1 miles)

  • Lowest 11 September, 2025

    44.1 °F

  • Average September

    64 °F

  • Highest 6 September, 2025

    84 °F

Climate (2020–Present)

Fitchburg, Fitchburg Municipal Airport (3.1 miles)

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  • Average Low 2020–2025

    41.8 °F

  • Average 2020–2025

    51.9 °F

  • Average High 2020–2025

    61.8 °F
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