Herrs Island Weather Forecast

    • 67
    • 85

    Rain Showers

    • 64
    • 85

    Thunderstorms

    • 65
    • 86

    Partly Sunny

    • 67
    • 87

    Mostly Sunny

    • 70
    • 90

    Mostly Sunny

    • 70
    • 93

    Partly Sunny

Today 10 Jul Allegheny

Considerable cloudiness. Scattered Showers and Thunderstorms in the Morning, then Showers and numerous Thunderstorms in the afternoon. Some Thunderstorms may produce heavy rainfall. Humid with Highs in the lower 80s. Southwest Winds 5 to 10 Mph. Chance of rain 90 percent.

Tonight 10 Jul Allegheny

Mostly cloudy. Numerous Showers and Thunderstorms in the evening. Areas of fog after midnight. Some Thunderstorms may produce heavy rainfall in the evening. Humid with Lows in the mid 60s. Southwest Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 70 percent.

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Herrs Island Temperature Statistics

July Temperature

Pittsburgh - Allegheny County Airport (8.1 miles)

  • Lowest 5 July, 2026

    68 °F

  • Average July

    78.9 °F

  • Highest 2 July, 2026

    93 °F

Climate (2021–2026)

Pittsburgh - Allegheny County Airport (8.1 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    63.3 °F
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