Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 35°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Tuesday
14th Jul
35

21

13

9
Wednesday
15th Jul
36

23

11

9
Thursday
16th Jul
34

24

9

8
Friday
17th Jul
31

22

9

9
Saturday
18th Jul
28

20

4

5

5-day weather forecast updated at 04:01 on Tuesday 14th 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 Tuesday 14th July 2026

Expect clear skies in Allentown, Pennsylvania with a maximum temperature of 35°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the south-west.

35
°C maximum temperature
21
°C minimum temperature
clear skies
13
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
17
kph wind from SW

Allentown weather for Wednesday 15th July 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 36°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the west.

36
°C maximum temperature
23
°C minimum temperature
scattered clouds
11
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
18
kph wind from W

Allentown weather for Thursday 16th July 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 34°C, high 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 gentle breeze of 15 kph from the west.

34
°C maximum temperature
24
°C minimum temperature
scattered clouds
9
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
15
kph wind from W

Allentown weather for Friday 17th July 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-west.

31
°C maximum temperature
22
°C minimum temperature
scattered clouds
9
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
11
kph wind from NW

Allentown weather for Saturday 18th July 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 72% chance of some rain and a light breeze of 8 kph from the south.