Allentown Weather Forecast

    • 60
    • 75

    Chance Rain Showers

    • 59
    • 76

    Mostly Cloudy

    • 59
    • 77

    Mostly Cloudy

    • 59
    • 77

    Mostly Cloudy

    • 57
    • 77

    Mostly Sunny

    • 58
    • 78

    Mostly Sunny

    • 59
    • 81

    Mostly Sunny

Today 16 Aug Lowlands of Pierce and Southern King Counties

Partly sunny. A slight chance of rain in the Morning, then a chance of rain in the afternoon. Highs in the upper 60s to mid 70s. Southwest wind 10 to 15 Mph.

Tonight 16 Aug Lowlands of Pierce and Southern King Counties

Partly cloudy until early morning then becoming mostly cloudy. A slight chance of Showers in the evening. Lows in the 50s to lower 60s. Southwest wind 10 to 15 Mph decreasing to 10 Mph or less after midnight.

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Allentown Temperature Statistics

August Temperature

Renton Municipal Airport (2.5 miles)

  • Lowest 8 August, 2025

    52.6 °F

  • Average August

    69.8 °F

  • Highest 12 August, 2025

    92.6 °F

Climate (2020–Present)

Renton Municipal Airport (2.5 miles)

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  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    54.5 °F

  • Average High 2020–2025

    62.2 °F
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