Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 27°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Thursday
23rd Jul
27

17

12

8
Friday
24th Jul
27

16

9

8
Saturday
25th Jul
27

16

9

8
Sunday
26th Jul
28

16

6

8
Monday
27th Jul
29

18

9

7

5-day weather forecast updated at 04:01 on Thursday 23rd July 2026 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 Thursday 23rd July 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north.

27
°C maximum temperature
17
°C minimum temperature
scattered clouds
12
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
7
kph wind from N

Allentown weather for Friday 24th July 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the east.

27
°C maximum temperature
16
°C minimum temperature
broken clouds
9
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
7
kph wind from E

Allentown weather for Saturday 25th July 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the south-east.

27
°C maximum temperature
16
°C minimum temperature
scattered clouds
9
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
8
kph wind from SE

Allentown weather for Sunday 26th July 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 35% chance of some rain and little or no wind of 6 kph from the south-west.

28
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
8
UV index (Very High)
35
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
6
kph wind from SW

Allentown weather for Monday 27th July 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the west.