West Sister Weather Forecast

    • 23
    • 45

    Rain

    • 22
    • 25

    Blustery

    • 19
    • 32

    Chance Snow

    • 17
    • 24

    Mostly Sunny

    • 19
    • 26

    Mostly Sunny

    • 17
    • 29

    Partly Sunny

Today 29 Dec Coastal York

Rain. Areas of fog. Highs in the lower 40s. South Winds around 10 Mph. Gusts up to 25 Mph this afternoon. Chance of rain near 100 percent.

Tonight 29 Dec Coastal York

Partly cloudy with a chance of rain in the Evening, then mostly clear after midnight. Lows around 17. West Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

West Sister Temperature Statistics

December Temperature

Pease Air Force Base / Portsmouth (6.8 miles)

  • Lowest 5 December, 2025

    6.8 °F

  • Average December

    27.8 °F

  • Highest 19 December, 2025

    55.4 °F

Climate (2020–Present)

Pease Air Force Base / Portsmouth (6.8 miles)

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  • Average Low 2020–2025

    42.5 °F

  • Average 2020–2025

    50.8 °F

  • Average High 2020–2025

    59.3 °F
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