Stewartsville Weather Forecast

    • 61
    • 87

    Rain Showers Likely

    • 58
    • 81

    Mostly Sunny

    • 57
    • 79

    Mostly Sunny

    • 59
    • 82

    Rain Showers

    • 59
    • 77

    Rain Showers

    • 59
    • 81

    Mostly Sunny

Today 18 Jun Warren

Mostly cloudy with Showers likely with a slight chance of Thunderstorms in the Morning, then mostly sunny with a chance of Showers and Thunderstorms in the afternoon. Some Thunderstorms may produce gusty Winds in the afternoon. Hot with Highs in the mid 80s. South Winds 10 to 15 Mph, becoming southwest 15 to 20 Mph in the afternoon. Gusts up to 35 Mph. Chance of rain 70 percent.

Tonight 18 Jun Warren

Mostly clear in the Evening, then becoming mostly cloudy. Lows in the lower 60s. West Winds 15 to 20 Mph with Gusts up to 30 Mph, Diminishing to 5 to 10 Mph after midnight.

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Stewartsville Temperature Statistics

June Temperature

Allentown, Lehigh Valley International Airport (17.4 miles)

  • Lowest 2 June, 2026

    44.7 °F

  • Average June

    71.8 °F

  • Highest 11 June, 2026

    93.7 °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

    63.5 °F
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