Charleston Weather Forecast

    • 59
    • 68

    Rain Showers

    • 50
    • 80

    Partly Sunny

    • 46
    • 70

    Sunny

    • 50
    • 76

    Partly Sunny

    • 56
    • 78

    Chance Rain Showers

    • 48
    • 73

    Slight Chance Rain Showers

Today 9 Sep Southern Penobscot

Mostly cloudy. Highs in the upper 60s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 9 Sep Southern Penobscot

Isolated Thunderstorms. Showers. Patchy fog. Not as cool with Lows around 60. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain near 100 percent.

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  • Temperature Real-Time

Charleston Temperature Statistics

September Temperature

Bangor, Bangor International Airport (22.4 miles)

  • Lowest 1 September, 2026

    47.6 °F

  • Average September

    63.7 °F

  • Highest 1 September, 2026

    80.7 °F

Climate (2021–2026)

Bangor, Bangor International Airport (22.4 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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