Stewartsville Weather Forecast

    • 65
    • 86

    Chance Thunderstorms

    • 62
    • 85

    Mostly Sunny

    • 64
    • 86

    Chance Rain Showers

    • 59
    • 80

    Chance Thunderstorms

    • 59
    • 81

    Partly Sunny

    • 61
    • 81

    Chance Rain Showers

Today 17 Aug Warren

Mostly cloudy with a slight chance of Showers in the Morning, then partly sunny with a chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the mid 80s. Light and variable Winds, becoming northwest around 5 Mph in the afternoon. Chance of rain 50 percent.

Tonight 17 Aug Warren

Partly cloudy with a chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Humid with Lows in the mid 60s. Light and variable Winds, becoming north around 5 Mph after midnight. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Stewartsville Temperature Statistics

August Temperature

Allentown, Lehigh Valley International Airport (17.4 miles)

  • Lowest 4 August, 2026

    56.6 °F

  • Average August

    77 °F

  • Highest 7 August, 2026

    92.6 °F

Climate (2021–2026)

Allentown, Lehigh Valley International Airport (17.4 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    63.6 °F
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