Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 31°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Thursday
4th Jun
31

15

14

8
Friday
5th Jun
32

17

13

8
Saturday
6th Jun
32

20

6

8
Sunday
7th Jun
30

20

9

8
Monday
8th Jun
27

15

5

8

5-day weather forecast updated at 04:01 on Thursday 4th 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 Thursday 4th June 2026

Expect clear skies in Allentown, Pennsylvania with a maximum temperature of 31°C, moderate 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.

31
°C maximum temperature
15
°C minimum temperature
clear skies
14
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
M
moderate 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 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the west.

32
°C maximum temperature
17
°C minimum temperature
scattered clouds
13
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
M
moderate heat & humidity
13
kph wind from W

Allentown weather for Saturday 6th June 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 61% chance of some rain and a moderate breeze of 20 kph from the south-west.

32
°C maximum temperature
20
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
8
UV index (Very High)
61
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
20
kph wind from SW

Allentown weather for Sunday 7th June 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 2-5 mm of rainfall expected with 59% chance of some rain and a light breeze of 12 kph from the north-west.

30
°C maximum temperature
20
°C minimum temperature
isolated thunderstorms
9
hours of sunshine
8
UV index (Very High)
59
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
12
kph wind from NW

Allentown weather for Monday 8th June 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 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the east.