Shirley Weather Forecast

    • 24
    • 56

    Rain

    • 29
    • 38

    Partly Sunny

    • 20
    • 44

    Partly Sunny

    • 16
    • 29

    Partly Sunny

    • 26
    • 35

    Chance Snow

    • 19
    • 38

    Partly Sunny

Today 19 Dec Northwest Middlesex County

Rain, breezy and not as cool with Highs in the mid 50s. Temperature falling into the upper 40s in the afternoon. South Winds 15 to 25 Mph with Gusts up to 50 Mph. Chance of rain near 100 percent.

Tonight 19 Dec Northwest Middlesex County

Partly cloudy. Cooler with Lows in the mid 20s. West Winds 15 to 20 Mph with Gusts up to 45 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Shirley Temperature Statistics

December Temperature

Fitchburg, Fitchburg Municipal Airport (5 miles)

  • Lowest 9 December, 2025

    1.9 °F

  • Average December

    25.7 °F

  • Highest 10 December, 2025

    42.1 °F

Climate (2020–Present)

Fitchburg, Fitchburg Municipal Airport (5 miles)

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  • Average Low 2020–2025

    41.7 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    61.7 °F
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