Costigan Weather Forecast

    • 15
    • 40

    Snow Showers

    • 8
    • 23

    Partly Sunny

    • 20
    • 29

    Snow Likely

    • 11
    • 27

    Mostly Cloudy

    • 16
    • 28

    Mostly Cloudy

    • 15
    • 31

    Chance Snow

Today 21 Dec Southern Penobscot

Partly sunny. Scattered snow Showers in the Morning, then isolated snow and rain Showers in the afternoon. Highs in the upper 30s. Southwest Winds 10 to 15 Mph, becoming west in the afternoon. Chance of precipitation 50 percent.

Tonight 21 Dec Southern Penobscot

Mostly clear. Lows around 14. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Costigan Temperature Statistics

December Temperature

Bangor, Bangor International Airport (16.8 miles)

  • Lowest 9 December, 2025

    -11 °F

  • Average December

    21.2 °F

  • Highest 18 December, 2025

    41 °F

Climate (2020–Present)

Bangor, Bangor International Airport (16.8 miles)

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  • Average Low 2020–2025

    37.9 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    57 °F
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