East Sister Weather Forecast

    • 68
    • 80

    Rain Showers Likely

    • 65
    • 80

    Partly Sunny

    • 62
    • 80

    Slight Chance Thunderstorms

    • 61
    • 74

    Mostly Sunny

    • 65
    • 75

    Partly Sunny

    • 68
    • 80

    Chance Rain Showers

Today 1 Jul Coastal York

Cloudy this Morning, then becoming partly sunny. Patchy fog this morning. Scattered Showers. Isolated Thunderstorms this Morning, then scattered Thunderstorms this afternoon. Some Thunderstorms may produce heavy rainfall this afternoon. Warm with Highs in the mid 80s. Southwest Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent. Heat index Values in the lower 90s this afternoon.

Tonight 1 Jul Coastal York

Partly cloudy with isolated Showers and Thunderstorms in the Evening, then mostly cloudy with scattered Showers after midnight. Some Thunderstorms may produce heavy rainfall in the evening. Humid with Lows in the upper 60s. Southwest Winds around 10 Mph. Chance of rain 40 percent. Heat index Values in the lower 90s early in the evening.

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East Sister Temperature Statistics

July Temperature

Pease Air Force Base / Portsmouth (7.5 miles)

  • Lowest

  • Average July

  • Highest

Climate (2020–Present)

Pease Air Force Base / Portsmouth (7.5 miles)

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  • Average Low 2020–2025

    42.7 °F
  • Average 2020–2025

    50.9 °F
  • Average High 2020–2025

    59.3 °F
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