Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 26°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Monday
8th Jun
26

16

10

8
Tuesday
9th Jun
28

12

12

9
Wednesday
10th Jun
28

16

4

7
Thursday
11th Jun
33

19

9

7
Friday
12th Jun
34

21

10

9

5-day weather forecast updated at 04:01 on Monday 8th 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 Monday 8th June 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 26°C, maximum UV of 8 (Very High) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the south.

26
°C maximum temperature
16
°C minimum temperature
scattered clouds
10
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
26
°C wind chill
10
kph wind from S

Allentown weather for Tuesday 9th June 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-west.

28
°C maximum temperature
12
°C minimum temperature
scattered clouds
12
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
12
kph wind from SW

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 7 (High) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 63% chance of some rain and a gentle breeze of 13 kph from the south-west.

28
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
7
UV index (High)
63
% chance of some rain
<5
mm of rainfall expected
L
low heat & humidity
13
kph wind from SW

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 7 (High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 47% chance of some rain and a light breeze of 10 kph from the west.

33
°C maximum temperature
19
°C minimum temperature
isolated thunderstorms
9
hours of sunshine
7
UV index (High)
47
% chance of some rain
<2
mm of rainfall expected
H
high heat & humidity
10
kph wind from W

Allentown weather for Friday 12th June 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 34°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 10 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 west.