Allentown weather live forecast

Tomorrow's maximum temperature in Allentown is expected to be 20°C.

  • Sunday
    16th Mar
    Mostly cloudy with rain (10-20 mm of rainfall expected)
  • Monday
    17th Mar
    Sunshine and showers (10-20 mm of rainfall expected)
  • Tuesday
    18th Mar
    Clear skies
  • Wednesday
    19th Mar
    Scattered clouds
  • Thursday
    20th Mar
    Mostly cloudy with rain (5-10 mm of rainfall expected)

5-day weather forecast updated at 04:01 on Sunday 16th March 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 Sunday 16th March 2025

Expect mostly cloudy with rain in Allentown, Pennsylvania with a maximum temperature of 20°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 100% chance of some rain and a fresh breeze of 29 kph from the south.

  • 20°C maximum temperature20
    °C maximum temperature
  • 10°C minimum temperature10
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 1 (Low)1
    UV index (Low)
  • 100% chance of some rain100
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Fresh breeze of 29 kph from the South29
    kph wind from S

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Allentown weather for Monday 17th March 2025

Expect sunshine and showers in Allentown, Pennsylvania with a maximum temperature of 14°C, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 10-20 mm of rainfall expected with 52% chance of some rain and a moderate breeze of 21 kph from the north-west.

  • 14°C maximum temperature14
    °C maximum temperature
  • 2°C minimum temperature2
    °C minimum temperature
  • Sunshine and showers
    sunshine and showers
  • 7 hours of bright sunshine7
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 52% chance of some rain52
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Moderate breeze of 21 kph from the North-West21
    kph wind from NW

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Allentown weather for Tuesday 18th March 2025

Expect clear skies in Allentown, Pennsylvania with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the north-west.

  • 18°C maximum temperature18
    °C maximum temperature
  • -2°C minimum temperature-2
    °C minimum temperature
  • Clear skies
    clear skies
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 15 kph from the North-West15
    kph wind from NW

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Allentown weather for Wednesday 19th March 2025

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-east.

  • 18°C maximum temperature18
    °C maximum temperature
  • 3°C minimum temperature3
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 16 kph from the South-East16
    kph wind from SE

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Allentown weather for Thursday 20th March 2025

Expect mostly cloudy with rain in Allentown, Pennsylvania with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 51% chance of some rain and a moderate breeze of 21 kph from the south-west.

  • 19°C maximum temperature19
    °C maximum temperature
  • 4°C minimum temperature4
    °C minimum temperature
  • Mostly cloudy with rain
    mostly cloudy with rain
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 51% chance of some rain51
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • 19°C wind chill19
    °C wind chill
  • Moderate breeze of 21 kph from the South-West21
    kph wind from SW

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

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