Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 32°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Thursday
16th Apr
32

20

8

7
Friday
17th Apr
26

18

7

5
Saturday
18th Apr
26

16

6

7
Sunday
19th Apr
15

5

5

2
Monday
20th Apr
10

2

7

7

5-day weather forecast updated at 04:01 on Thursday 16th 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 Thursday 16th April 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 32°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.

32
°C maximum temperature
20
°C minimum temperature
broken 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 Friday 17th April 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 26°C, maximum UV of 5 (Moderate) and 7 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
18
°C minimum temperature
broken clouds
7
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
26
°C wind chill
12
kph wind from NW

Allentown weather for Saturday 18th April 2026

Expect sunshine and showers in Allentown, Pennsylvania with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 35% chance of some rain and a gentle breeze of 16 kph from the south-east.

26
°C maximum temperature
16
°C minimum temperature
sunshine and showers
6
hours of sunshine
7
UV index (High)
35
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
16
kph wind from SE

Allentown weather for Sunday 19th April 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 15°C, maximum UV of 2 (Low) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 73% chance of some rain and a moderate breeze of 21 kph from the north-west.

15
°C maximum temperature
5
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
2
UV index (Low)
73
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
21
kph wind from NW

Allentown weather for Monday 20th April 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 10°C, maximum UV of 7 (High) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north-west.