East Sister Weather Forecast

    • 52
    • 59

    Mostly Sunny

    • 54
    • 58

    Increasing Clouds

    • 57
    • 61

    Rain Likely

    • 56
    • 59

    Rain

    • 55
    • 59

    Rain

    • 54
    • 59

    Chance Rain Showers

    • 55
    • 61

    Partly Sunny

Today 23 Sep Coastal York

Partly sunny. Highs in the upper 60s.

Tonight 23 Sep Coastal York

Mostly clear. Lows in the lower 40s. 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 20 September, 2026

    42.8 °F

  • Average September

    64.6 °F

  • Highest 10 September, 2026

    86.5 °F

Climate (2021–2026)

Pease Air Force Base / Portsmouth (7.5 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    50.7 °F

  • Average High 2021–2026

    59.2 °F
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