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
10th Jun
28

18

4

8
Thursday
11th Jun
31

20

9

8
Friday
12th Jun
33

22

8

8
Saturday
13th Jun
30

20

10

9
Sunday
14th Jun
33

18

7

9

5-day weather forecast updated at 04:01 on Wednesday 10th 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 10th June 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 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 57% chance of some rain and a light breeze of 12 kph from the south-west.

28
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
8
UV index (Very High)
57
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
12
kph wind from SW

Allentown weather for Thursday 11th June 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 9 hours of bright sunshine. There are 5-10 mm of rainfall expected with 60% chance of some rain and a gentle breeze of 13 kph from the west.

31
°C maximum temperature
20
°C minimum temperature
isolated thunderstorms
9
hours of sunshine
8
UV index (Very High)
60
% chance of some rain
<10
mm of rainfall expected
M
moderate heat & humidity
13
kph wind from W

Allentown weather for Friday 12th 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 8 hours of bright sunshine. There are 5-10 mm of rainfall expected with 83% chance of some rain and a light breeze of 12 kph from the west.

33
°C maximum temperature
22
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
8
UV index (Very High)
83
% chance of some rain
<10
mm of rainfall expected
H
high heat & humidity
12
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 10 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
20
°C minimum temperature
scattered clouds
10
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 sunshine and showers in Allentown, Pennsylvania with a maximum temperature of 33°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 34% chance of some rain and a gentle breeze of 16 kph from the south-west.