Ayer Weather Forecast

    • 60
    • 76

    Chance Rain Showers

    • 60
    • 74

    Rain Showers

    • 46
    • 74

    Mostly Sunny

    • 51
    • 70

    Partly Sunny

    • 58
    • 79

    Partly Sunny

    • 58
    • 80

    Chance Rain Showers

Today 12 Sep Northwest Middlesex County

Sunny. Highs in the mid 70s. East Winds around 5 Mph, becoming south around 5 Mph this afternoon.

Tonight 12 Sep Northwest Middlesex County

Partly cloudy in the Evening, then mostly cloudy with a chance of Showers with a slight chance of Thunderstorms after midnight. Not as cool with Lows around 60. Southeast Winds around 5 Mph. Chance of rain 40 percent.

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Ayer Temperature Statistics

September Temperature

Fitchburg, Fitchburg Municipal Airport (8.1 miles)

  • Lowest 6 September, 2026

    52 °F

  • Average September

    66.1 °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

    41.3 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    61.5 °F
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