Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 33°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Thursday
11th Jun
33

21

7

8
Friday
12th Jun
31

21

8

9
Saturday
13th Jun
30

18

11

9
Sunday
14th Jun
32

18

4

6
Monday
15th Jun
27

17

9

8

5-day weather forecast updated at 04:01 on Thursday 11th 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 11th June 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 33°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 51% chance of some rain and a gentle breeze of 14 kph from the west.

33
°C maximum temperature
21
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
8
UV index (Very High)
51
% chance of some rain
<5
mm of rainfall expected
H
high heat & humidity
14
kph wind from W

Allentown weather for Friday 12th June 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 8 hours of bright sunshine. There are 2-5 mm of rainfall expected with 71% chance of some rain and a gentle breeze of 15 kph from the west.

31
°C maximum temperature
21
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
9
UV index (Very High)
71
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from W

Allentown weather for Saturday 13th June 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 30°C, moderate 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 light breeze of 11 kph from the north-west.

30
°C maximum temperature
18
°C minimum temperature
scattered clouds
11
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 Sunday 14th June 2026

Expect mostly cloudy with rain in Allentown, Pennsylvania with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 69% chance of some rain and a moderate breeze of 21 kph from the south-west.

32
°C maximum temperature
18
°C minimum temperature
mostly cloudy with rain
4
hours of sunshine
6
UV index (High)
69
% chance of some rain
<20
mm of rainfall expected
M
moderate heat & humidity
21
kph wind from SW

Allentown weather for Monday 15th June 2026

Expect sunshine and showers 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 0-2 mm of rainfall expected with 36% chance of some rain and a light breeze of 10 kph from the north-west.