West Sister Weather Forecast

    • 55
    • 84

    Partly Sunny

    • 54
    • 59

    Partly Sunny

    • 63
    • 72

    Slight Chance Thunderstorms

    • 50
    • 70

    Chance Rain Showers

    • 47
    • 56

    Partly Sunny

    • 47
    • 53

    Slight Chance Rain Showers

    • 47
    • 54

    Chance Rain Showers

Today 17 May Coastal York

Partly sunny. Highs around 80. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 17 May Coastal York

Mostly clear in the Evening, then becoming partly cloudy. Lows around 50. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

West Sister Temperature Statistics

May Temperature

Pease Air Force Base / Portsmouth (6.8 miles)

  • Lowest 9 May, 2026

    38.1 °F

  • Average May

    54.5 °F

  • Highest 5 May, 2026

    80.4 °F

Climate (2021–Present)

Pease Air Force Base / Portsmouth (6.8 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    50.6 °F

  • Average High 2021–2026

    59.1 °F
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