East Sister Weather Forecast

    • 49
    • 51

    Mostly Cloudy

    • 46
    • 52

    Rain

    • 47
    • 50

    Rain

    • 53
    • 62

    Mostly Sunny

    • 50
    • 64

    Partly Sunny

    • 51
    • 59

    Partly Sunny

Today 13 May Coastal York

Cloudy with a 50 percent chance of Showers. Highs in the lower 50s. South Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 13 May Coastal York

Mostly cloudy. Patchy fog after midnight. Lows in the upper 40s. South Winds around 10 Mph with Gusts up to 25 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

East Sister Temperature Statistics

May Temperature

Pease Air Force Base / Portsmouth (7.5 miles)

  • Lowest 9 May, 2026

    38.1 °F

  • Average May

    55.4 °F

  • Highest 5 May, 2026

    80.4 °F

Climate (2021–Present)

Pease Air Force Base / Portsmouth (7.5 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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