Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 29°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Tuesday
14th Apr
29

15

8

8
Wednesday
15th Apr
30

18

8

7
Thursday
16th Apr
31

19

9

6
Friday
17th Apr
26

18

6

7
Saturday
18th Apr
24

15

5

7

5-day weather forecast updated at 04:01 on Tuesday 14th April 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 14th April 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 29°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 10% chance of some rain and a gentle breeze of 19 kph from the south-west.

29
°C maximum temperature
15
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
8
UV index (Very High)
10
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
19
kph wind from SW

Allentown weather for Wednesday 15th April 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-west.

30
°C maximum temperature
18
°C minimum temperature
scattered clouds
8
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
16
kph wind from SW

Allentown weather for Thursday 16th April 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south-west.

31
°C maximum temperature
19
°C minimum temperature
scattered clouds
9
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
M
moderate heat & humidity
15
kph wind from SW

Allentown weather for Friday 17th April 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 26°C, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 53% chance of some rain and a light breeze of 11 kph from the west.

26
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
7
UV index (High)
53
% chance of some rain
<5
mm of rainfall expected
26
°C wind chill
11
kph wind from W

Allentown weather for Saturday 18th April 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 24°C, maximum UV of 7 (High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south-east.