Hellertown Weather Forecast

    • 57
    • 71

    Rain

    • 50
    • 70

    Chance Rain Showers

    • 48
    • 62

    Chance Rain Showers

    • 48
    • 63

    Chance Rain Showers

    • 48
    • 63

    Chance Rain Showers

    • 48
    • 64

    Chance Rain Showers

Today 20 Sep Northampton

Rain. A slight chance of Thunderstorms this afternoon. Highs in the upper 60s. Southeast Winds 5 to 10 Mph. Chance of rain near 100 percent.

Tonight 20 Sep Northampton

Rain with a slight chance of Thunderstorms in the evening. Lows in the mid 50s. North Winds 5 to 10 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hellertown Temperature Statistics

September Temperature

Allentown, Lehigh Valley International Airport (6.8 miles)

  • Lowest 15 September, 2026

    45.6 °F

  • Average September

    71.2 °F

  • Highest 1 September, 2026

    88.6 °F

Climate (2021–2026)

Allentown, Lehigh Valley International Airport (6.8 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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