Bethlehem Weather Forecast

    • 60
    • 71

    Rain Showers Likely

    • 55
    • 70

    Chance Rain Showers

    • 57
    • 79

    Sunny

    • 61
    • 80

    Partly Sunny

    • 63
    • 77

    Chance Rain Showers

    • 56
    • 78

    Chance Rain Showers

Today 20 Aug Hunterdon

Cloudy. Isolated Showers in the Morning, then scattered Showers and Thunderstorms in the afternoon. Humid with Highs in the mid 70s. East Winds around 5 Mph. Chance of rain 50 percent.

Tonight 20 Aug Hunterdon

Showers likely with a chance of Thunderstorms. Humid with Lows in the lower 60s. Northeast Winds 5 to 10 Mph. Chance of rain 70 percent.

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Bethlehem Temperature Statistics

August Temperature

Somerville, Somerset Airport (18 miles)

  • Lowest 9 August, 2025

    52.6 °F

  • Average August

    74.3 °F

  • Highest 12 August, 2025

    93.7 °F

Climate (2020–Present)

Somerville, Somerset Airport (18 miles)

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  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    54.4 °F

  • Average High 2020–2025

    65.8 °F
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