Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 25°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Monday
13th Apr
25

11

3

4
Tuesday
14th Apr
27

15

9

6
Wednesday
15th Apr
31

17

9

7
Thursday
16th Apr
31

20

7

7
Friday
17th Apr
28

18

13

7

5-day weather forecast updated at 04:01 on Monday 13th 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 Monday 13th April 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 25°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the south-west.

25
°C maximum temperature
11
°C minimum temperature
broken clouds
3
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
25
°C wind chill
22
kph wind from SW

Allentown weather for Tuesday 14th April 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 7% chance of some rain and a gentle breeze of 17 kph from the south-west.

27
°C maximum temperature
15
°C minimum temperature
isolated thunderstorms
9
hours of sunshine
6
UV index (High)
7
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
17
kph wind from SW

Allentown weather for Wednesday 15th April 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the south-west.

31
°C maximum temperature
17
°C minimum temperature
scattered clouds
9
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 broken clouds in Allentown, Pennsylvania with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 7 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
20
°C minimum temperature
broken clouds
7
hours of sunshine
7
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 clear skies in Allentown, Pennsylvania with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 7 (High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the west.