East Sister Weather Forecast

    • 57
    • 65

    Decreasing Clouds

    • 56
    • 66

    Partly Sunny

    • 59
    • 66

    Mostly Cloudy

    • 63
    • 71

    Mostly Sunny

    • 51
    • 70

    Mostly Sunny

    • 50
    • 61

    Mostly Sunny

Today 15 Sep Coastal York

Mostly sunny. Highs in the lower 70s. Light and variable Winds.

Tonight 15 Sep Coastal York

Mostly clear in the Evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the lower 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

East Sister Temperature Statistics

September Temperature

Pease Air Force Base / Portsmouth (7.5 miles)

  • Lowest 9 September, 2025

    47.3 °F

  • Average September

    64.1 °F

  • Highest 6 September, 2025

    82.6 °F

Climate (2020–Present)

Pease Air Force Base / Portsmouth (7.5 miles)

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  • Average Low 2020–2025

    42.6 °F

  • Average 2020–2025

    50.9 °F

  • Average High 2020–2025

    59.4 °F
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