Allentown weather live forecast

Tomorrow's maximum temperature in Allentown is expected to be 84°F.

5-day weather forecast updated at 04:01 on Friday 18th July 2025 GMT

More about Allentown

Allentown by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Pennsylvania

Marriott discount code: up to 20% off hotel stays

  • Save up to 20% when you book long stays with Marriott
  • 20% off - 4-6 nights, 15% off 3 nights
  • Book hotels in Europe, the Middle East & Africa
Show discount codeShow discount code ******UK8
Redeem Marriott discount code >>

View all Marriott offers

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 Friday 18th July 2025

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 84°F, low levels of heat & humidity, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 mph from the north-west.

  • 84°F maximum temperature84
    °F maximum temperature
  • 70°F minimum temperature70
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 7 mph from the North-West7
    mph wind from NW

Back to top

Allentown weather for Saturday 19th July 2025

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the south-east.

  • 81°F maximum temperature81
    °F maximum temperature
  • 68°F minimum temperature68
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 6 mph from the South-East6
    mph wind from SE

Back to top

Allentown weather for Sunday 20th July 2025

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 90°F, moderate levels of heat & humidity, maximum UV of 7 (High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 54% chance of some rain and a gentle breeze of 9 mph from the west.

  • 90°F maximum temperature90
    °F maximum temperature
  • 70°F minimum temperature70
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 54% chance of some rain54
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 9 mph from the West9
    mph wind from W

Back to top

Allentown weather for Monday 21st July 2025

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the north-west.

  • 82°F maximum temperature82
    °F maximum temperature
  • 64°F minimum temperature64
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 9 mph from the North-West9
    mph wind from NW

Back to top

Allentown weather for Tuesday 22nd July 2025

Expect clear skies in Allentown, Pennsylvania with a maximum temperature of 81°F, low levels of heat & humidity, maximum UV of 8 (Very High) and 14 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 4 mph from the north.

  • 81°F maximum temperature81
    °F maximum temperature
  • 59°F minimum temperature59
    °F minimum temperature
  • Clear skies
    clear skies
  • 14 hours of bright sunshine14
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Light breeze of 4 mph from the North4
    mph wind from N

Back to top

Rentalcars.com: Discount car hire worldwide

  • Compare car hire prices to find best deal online
  • Book flexible bookings with free cancellation policy
  • No hidden fees + price match guarantee
Go to Rentalcars.com deal >>

View all Rentalcars.com offers

Metric (°C)  |  Imperial (°F)

Back to top

More about the USA

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^