Shirley Weather Forecast

    • 47
    • 66

    Rain Showers

    • 47
    • 74

    Mostly Sunny

    • 48
    • 74

    Partly Sunny

    • 50
    • 71

    Slight Chance Rain Showers

    • 46
    • 79

    Mostly Sunny

    • 44
    • 69

    Mostly Sunny

Today 7 Sep Northwest Middlesex County

Showers, mainly this morning. Patchy fog. Locally heavy rainfall possible this morning. Much cooler with Highs in the mid 60s. North Winds around 5 Mph. Chance of rain 90 percent.

Tonight 7 Sep Northwest Middlesex County

Mostly cloudy in the Evening, then clearing. Cooler with Lows in the upper 40s. West Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Shirley Temperature Statistics

September Temperature

Fitchburg, Fitchburg Municipal Airport (5 miles)

  • Lowest 2 September, 2025

    50 °F

  • Average September

    65.7 °F

  • Highest 4 September, 2025

    80.1 °F

Climate (2020–Present)

Fitchburg, Fitchburg Municipal Airport (5 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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