Belfast Weather Forecast

    • 30
    • 38

    Rain Likely

    • 30
    • 44

    Rain

    • 18
    • 36

    Partly Sunny

    • 31
    • 36

    Slight Chance Rain/Snow

    • 28
    • 50

    Mostly Cloudy

    • 25
    • 38

    Mostly Cloudy

Today 30 Jan Northampton

Sunny, cooler with Highs in the upper 30s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 30 Jan Northampton

Mostly cloudy. Rain likely with a chance of freezing rain after midnight. Ice accumulation around a trace. Cold. Near steady temperature in the lower 30s. South Winds around 5 Mph. Chance of precipitation 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Belfast Temperature Statistics

January Temperature

Allentown, Lehigh Valley International Airport (12.4 miles)

  • Lowest 22 January, 2025

    -7.1 °F

  • Average January

    26 °F

  • Highest 1 January, 2025

    45.6 °F

Climate (2020–Present)

Allentown, Lehigh Valley International Airport (12.4 miles)

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  • Average Low 2020–2025

    43.9 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    63.5 °F
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