Bethlehem Weather Forecast

    • 3
    • 17

    Mostly Sunny

    • 25
    • 29

    Partly Sunny

    • 20
    • 38

    Partly Sunny

    • 6
    • 26

    Mostly Cloudy

    • 6
    • 14

    Chance Snow

    • 6
    • 14

    Chance Snow

Today 20 Jan Hunterdon

Sunny, Colder with Highs around 20. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Wind chill Values as low as 2 below.

Tonight 20 Jan Hunterdon

Mostly clear. Cold with Lows around 4 above. West Winds 5 to 10 Mph. Wind chill Values as low as 5 below.

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Bethlehem Temperature Statistics

January Temperature

Somerville, Somerset Airport (18 miles)

  • Lowest 3 January, 2026

    12 °F

  • Average January

    33.3 °F

  • Highest 8 January, 2026

    52 °F

Climate (2021–Present)

Somerville, Somerset Airport (18 miles)

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  • Average Low 2021–2026

    43.2 °F

  • Average 2021–2026

    54.3 °F

  • Average High 2021–2026

    65.7 °F
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