Ayer Weather Forecast

    • 3
    • 24

    Mostly Sunny

    • 20
    • 28

    Chance Snow

    • 29
    • 41

    Rain

    • 18
    • 38

    Partly Sunny

    • 18
    • 32

    Chance Snow

    • 15
    • 32

    Slight Chance Snow

    • 11
    • 28

    Mostly Sunny

Today 8 Dec Northwest Middlesex County

Sunny, Colder with Highs in the lower 20s. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 8 Dec Northwest Middlesex County

Mostly clear. Colder with Lows around 3 above. Northwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Ayer Temperature Statistics

December Temperature

Fitchburg, Fitchburg Municipal Airport (8.1 miles)

  • Lowest 5 December, 2025

    6.1 °F

  • Average December

    26.9 °F

  • Highest 1 December, 2025

    39.9 °F

Climate (2020–Present)

Fitchburg, Fitchburg Municipal Airport (8.1 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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