Charleston Weather Forecast

    • 39
    • 66

    Sunny

    • 46
    • 70

    Mostly Sunny

    • 50
    • 71

    Mostly Cloudy

    • 50
    • 66

    Mostly Cloudy

    • 47
    • 67

    Chance Rain Showers

    • 47
    • 64

    Slight Chance Rain Showers

Today 23 Sep Southern Penobscot

Patchy fog in the morning. Sunny. Highs in the upper 60s. Northeast Winds 5 to 10 Mph.

Tonight 23 Sep Southern Penobscot

Clear. Patchy fog after midnight. Lows in the upper 30s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Charleston Temperature Statistics

September Temperature

Bangor, Bangor International Airport (22.4 miles)

  • Lowest 15 September, 2026

    39.7 °F

  • Average September

    60.9 °F

  • Highest 10 September, 2026

    82.7 °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

    47.1 °F

  • Average High 2021–2026

    56.9 °F
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