Ayer Weather Forecast

    • 55
    • 71

    Mostly Cloudy

    • 65
    • 78

    Partly Sunny

    • 53
    • 81

    Chance Rain Showers

    • 41
    • 67

    Mostly Sunny

    • 45
    • 65

    Slight Chance Rain Showers

    • 38
    • 67

    Mostly Sunny

    • 35
    • 56

    Mostly Sunny

Today 30 Sep Northwest Middlesex County

Sunny. Highs around 60.

Tonight 30 Sep Northwest Middlesex County

Mostly cloudy. Patchy fog after midnight. Lows in the mid 50s. Southwest Winds around 5 Mph.

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  • Temperature Real-Time

Ayer Temperature Statistics

September Temperature

Fitchburg, Fitchburg Municipal Airport (8.1 miles)

  • Lowest 24 September, 2026

    41 °F

  • Average September

    61.6 °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

    61.4 °F
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