Shirley Weather Forecast

    • 51
    • 76

    Becoming Sunny

    • 53
    • 79

    Mostly Sunny

    • 64
    • 85

    Partly Sunny

    • 73
    • 91

    Partly Sunny

    • 71
    • 98

    Chance Thunderstorms

    • 67
    • 89

    Chance Thunderstorms

Today 21 Jul Northwest Middlesex County

Mostly sunny. Cooler with Highs in the mid 70s. Northwest Winds 10 to 15 Mph.

Tonight 21 Jul Northwest Middlesex County

Clear, cooler with Lows in the lower 50s. Northwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Shirley Temperature Statistics

July Temperature

Fitchburg, Fitchburg Municipal Airport (5 miles)

  • Lowest 5 July, 2025

    53.7 °F

  • Average July

    76.9 °F

  • Highest 16 July, 2025

    94.6 °F

Climate (2020–Present)

Fitchburg, Fitchburg Municipal Airport (5 miles)

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  • Average Low 2020–2025

    41.9 °F

  • Average 2020–2025

    52 °F

  • Average High 2020–2025

    61.8 °F
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