Ayer Weather Forecast

    • 46
    • 64

    Partly Sunny

    • 53
    • 68

    Chance Rain

    • 53
    • 61

    Rain

    • 51
    • 60

    Rain Showers

    • 51
    • 61

    Chance Rain Showers

    • 50
    • 67

    Partly Sunny

    • 54
    • 72

    Partly Sunny

Today 24 Sep Northwest Middlesex County

Partly sunny. Highs in the mid 70s.

Tonight 24 Sep Northwest Middlesex County

Partly cloudy. Lows in the mid 40s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming north after midnight.

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Ayer Temperature Statistics

September Temperature

Fitchburg, Fitchburg Municipal Airport (8.1 miles)

  • Lowest 15 September, 2026

    44.1 °F

  • Average September

    63.5 °F

  • Highest 10 September, 2026

    84.9 °F

Climate (2021–2026)

Fitchburg, Fitchburg Municipal Airport (8.1 miles)

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  • Average Low 2021–2026

    41.2 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    61.5 °F
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