Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 23°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Tuesday
23rd Jun
23

17

1

4
Wednesday
24th Jun
26

16

12

8
Thursday
25th Jun
29

16

5

7
Friday
26th Jun
28

19

1

4
Saturday
27th Jun
25

21

2

2

5-day weather forecast updated at 04:01 on Tuesday 23rd 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 Tuesday 23rd June 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 23°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 10-20 mm of rainfall expected with 69% chance of some rain and a light breeze of 11 kph from the north.

23
°C maximum temperature
17
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
4
UV index (Moderate)
69
% chance of some rain
<20
mm of rainfall expected
23
°C wind chill
11
kph wind from N

Allentown weather for Wednesday 24th June 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north-west.

26
°C maximum temperature
16
°C minimum temperature
scattered clouds
12
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
12
kph wind from NW

Allentown weather for Thursday 25th June 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 51% chance of some rain and a light breeze of 12 kph from the south.

29
°C maximum temperature
16
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
7
UV index (High)
51
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
12
kph wind from S

Allentown weather for Friday 26th June 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 68% chance of some rain and a light breeze of 8 kph from the south-west.

28
°C maximum temperature
19
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
4
UV index (Moderate)
68
% chance of some rain
<10
mm of rainfall expected
L
low heat & humidity
8
kph wind from SW

Allentown weather for Saturday 27th June 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 25°C, low levels of heat & humidity, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 20-30 mm of rainfall expected with 81% chance of some rain and a light breeze of 9 kph from the north-west.