Squannacook Brook State Forest Weather Forecast

    • 51
    • 70

    Becoming Sunny

    • 55
    • 77

    Mostly Sunny

    • 56
    • 78

    Partly Sunny

    • 64
    • 77

    Chance Rain Showers

    • 54
    • 78

    Partly Sunny

    • 51
    • 71

    Mostly Sunny

Today 6 Sep Northwest Middlesex County

Partly sunny. A chance of Showers with a slight chance of Thunderstorms this morning. Highs in the lower 70s. North Winds around 5 Mph. Chance of rain 50 percent.

Tonight 6 Sep Northwest Middlesex County

Clear. Lows in the lower 50s. Northwest Winds around 5 Mph.

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Squannacook Brook State Forest Temperature Statistics

September Temperature

Fitchburg, Fitchburg Municipal Airport (7.5 miles)

  • Lowest 1 September, 2026

    61 °F

  • Average September

    65.6 °F

  • Highest 2 September, 2026

    73.9 °F

Climate (2021–2026)

Fitchburg, Fitchburg Municipal Airport (7.5 miles)

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  • Average Low 2021–2026

    41.3 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    61.5 °F
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