Allagash Weather Forecast

    • 52
    • 70

    Rain Showers Likely

    • 36
    • 59

    Chance Rain Showers

    • 52
    • 66

    Partly Sunny

    • 41
    • 72

    Mostly Cloudy

    • 44
    • 66

    Chance Rain Showers

    • 38
    • 66

    Partly Sunny

Today 13 Sep Northwest Aroostook

Cloudy. Isolated Showers in the Morning, then scattered Thunderstorms in the afternoon. Highs in the upper 60s. South Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 13 Sep Northwest Aroostook

Mostly cloudy. Near steady temperature in the lower 50s. South Winds around 5 Mph with Gusts up to 15 Mph.

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Allagash Temperature Statistics

September Temperature

Frenchville, Northern Aroostook Regional Airport (36.7 miles)

  • Lowest 9 September, 2026

    36.6 °F

  • Average September

    56.9 °F

  • Highest 7 September, 2026

    72.6 °F

Climate (2021–2026)

Frenchville, Northern Aroostook Regional Airport (36.7 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    41.9 °F

  • Average High 2021–2026

    50.2 °F
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