Alton Weather Forecast

    • 50
    • 79

    Rain Showers Likely

    • 49
    • 77

    Mostly Sunny

    • 53
    • 73

    Mostly Cloudy

    • 53
    • 71

    Rain Showers Likely

    • 54
    • 69

    Chance Rain Showers

    • 52
    • 71

    Chance Rain Showers

Today 30 Aug Southern Penobscot

Mostly sunny this Morning, then mostly cloudy with numerous Showers and scattered Thunderstorms this afternoon. Highs in the upper 70s. West Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 60 percent.

Tonight 30 Aug Southern Penobscot

Mostly cloudy with Showers likely with a chance of Thunderstorms in the Evening, then clear after midnight. Patchy fog. Lows around 50. Northwest Winds 5 to 10 Mph. Chance of rain 70 percent.

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Alton Temperature Statistics

August Temperature

Bangor, Bangor International Airport (16.8 miles)

  • Lowest 15 August, 2026

    49.6 °F

  • Average August

    71.3 °F

  • Highest 6 August, 2026

    92.6 °F

Climate (2021–2026)

Bangor, Bangor International Airport (16.8 miles)

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  • Average Low 2021–2026

    37.2 °F

  • Average 2021–2026

    47.2 °F

  • Average High 2021–2026

    56.9 °F
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