Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 18°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

5-day weather forecast updated at 04:03 on Wednesday 15th October 2025 GMT

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The 5-day weather forecast for Pennsylvania (Allentown) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Allentown weather forecast by day

Below are the detailed weather forecasts for Allentown for the next 5 days.

Allentown weather for Wednesday 15th October 2025

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 18°C, maximum UV of 3 (Moderate) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north.

  • 18°C maximum temperature18
    °C maximum temperature
  • 8°C minimum temperature8
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 3 (Moderate)3
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 18°C wind chill18
    °C wind chill
  • Gentle breeze of 19 kph from the North19
    kph wind from N

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Allentown weather for Thursday 16th October 2025

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 15°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the north-west.

  • 15°C maximum temperature15
    °C maximum temperature
  • 6°C minimum temperature6
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 15°C wind chill15
    °C wind chill
  • Moderate breeze of 23 kph from the North-West23
    kph wind from NW

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Allentown weather for Friday 17th October 2025

Expect clear skies in Allentown, Pennsylvania with a maximum temperature of 17°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the north-west.

  • 17°C maximum temperature17
    °C maximum temperature
  • 4°C minimum temperature4
    °C minimum temperature
  • Clear skies
    clear skies
  • 11 hours of bright sunshine11
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 17°C wind chill17
    °C wind chill
  • Gentle breeze of 14 kph from the North-West14
    kph wind from NW

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Allentown weather for Saturday 18th October 2025

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 18°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the south.

  • 18°C maximum temperature18
    °C maximum temperature
  • 4°C minimum temperature4
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Light breeze of 7 kph from the South7
    kph wind from S

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Allentown weather for Sunday 19th October 2025

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 22°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 56% chance of some rain and a moderate breeze of 20 kph from the south.

  • 22°C maximum temperature22
    °C maximum temperature
  • 9°C minimum temperature9
    °C minimum temperature
  • Mostly cloudy with light rain
    mostly cloudy with light rain
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 56% chance of some rain56
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 20 kph from the South20
    kph wind from S

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Metric (°C / mm)  |  Imperial (°F / inches)

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