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.

Tuesday
31st Mar
26

15

8

4
Wednesday
1st Apr
24

14

3

3
Thursday
2nd Apr
13

7

0

1
Friday
3rd Apr
23

5

3

6
Saturday
4th Apr
27

14

9

6

5-day weather forecast updated at 04:01 on Tuesday 31st March 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 31st March 2026

Expect sunshine and showers in Allentown, Pennsylvania with a maximum temperature of 26°C, maximum UV of 4 (Moderate) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 17% chance of some rain and a moderate breeze of 20 kph from the south-west.

26
°C maximum temperature
15
°C minimum temperature
sunshine and showers
8
hours of sunshine
4
UV index (Moderate)
17
% chance of some rain
<2
mm of rainfall expected
26
°C wind chill
20
kph wind from SW

Allentown weather for Wednesday 1st April 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 24°C, maximum UV of 3 (Moderate) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 77% chance of some rain and a gentle breeze of 14 kph from the south-west.

24
°C maximum temperature
14
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
3
UV index (Moderate)
77
% chance of some rain
<10
mm of rainfall expected
24
°C wind chill
14
kph wind from SW

Allentown weather for Thursday 2nd April 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 13°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 26% chance of some rain and a gentle breeze of 13 kph from the east.

13
°C maximum temperature
7
°C minimum temperature
isolated thunderstorms
0
hours of sunshine
1
UV index (Low)
26
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
13
kph wind from E

Allentown weather for Friday 3rd April 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 23°C, maximum UV of 6 (High) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 42% chance of some rain and a light breeze of 12 kph from the south-west.

23
°C maximum temperature
5
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
6
UV index (High)
42
% chance of some rain
<2
mm of rainfall expected
23
°C wind chill
12
kph wind from SW

Allentown weather for Saturday 4th April 2026

Expect sunshine and showers 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 52% chance of some rain and a gentle breeze of 13 kph from the south.