Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 28°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Wednesday
3rd Jun
28

15

14

8
Thursday
4th Jun
29

16

14

8
Friday
5th Jun
32

16

11

8
Saturday
6th Jun
32

19

11

8
Sunday
7th Jun
28

20

5

6

5-day weather forecast updated at 04:01 on Wednesday 3rd June 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 Wednesday 3rd June 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 28°C, 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 9 kph from the north.

28
°C maximum temperature
15
°C minimum temperature
scattered clouds
14
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
9
kph wind from N

Allentown weather for Thursday 4th June 2026

Expect clear skies in Allentown, Pennsylvania with a maximum temperature of 29°C, 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 8 kph from the west.

29
°C maximum temperature
16
°C minimum temperature
clear skies
14
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
8
kph wind from W

Allentown weather for Friday 5th June 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the west.

32
°C maximum temperature
16
°C minimum temperature
scattered clouds
11
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
12
kph wind from W

Allentown weather for Saturday 6th June 2026

32
°C maximum temperature
19
°C minimum temperature
scattered clouds
11
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
18
kph wind from W

Allentown weather for Sunday 7th June 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 74% chance of some rain and a gentle breeze of 16 kph from the west.