Costigan Weather Forecast

    • 53
    • 76

    Increasing Clouds

    • 57
    • 76

    Partly Sunny

    • 63
    • 74

    Chance Rain Showers

    • 55
    • 81

    Rain Showers Likely

    • 49
    • 72

    Slight Chance Rain Showers

    • 44
    • 69

    Mostly Sunny

    • 45
    • 70

    Mostly Sunny

Today 3 Sep Southern Penobscot

Mostly sunny. Highs in the upper 70s. South Winds 5 to 10 Mph.

Tonight 3 Sep Southern Penobscot

Mostly clear this Evening, then becoming mostly cloudy. Lows in the lower 50s. South Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Costigan Temperature Statistics

September Temperature

Bangor, Bangor International Airport (16.8 miles)

  • Lowest 1 September, 2025

    50 °F

  • Average September

    65.2 °F

  • Highest 1 September, 2025

    80.1 °F

Climate (2020–Present)

Bangor, Bangor International Airport (16.8 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    38 °F

  • Average 2020–2025

    47.6 °F

  • Average High 2020–2025

    57.1 °F
Get WillyWeather+ to remove ads