Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 11°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Monday
20th Apr
11

2

7

5
Tuesday
21st Apr
12

-1

12

6
Wednesday
22nd Apr
18

6

4

5
Thursday
23rd Apr
23

7

9

7
Friday
24th Apr
24

10

8

5

5-day weather forecast updated at 04:01 on Monday 20th 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 20th April 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 11°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the north-west.

11
°C maximum temperature
2
°C minimum temperature
scattered clouds
7
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
11
°C wind chill
17
kph wind from NW

Allentown weather for Tuesday 21st April 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 12°C, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the south.

12
°C maximum temperature
-1
°C minimum temperature
scattered clouds
12
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
12
°C wind chill
9
kph wind from S

Allentown weather for Wednesday 22nd April 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the south-east.

18
°C maximum temperature
6
°C minimum temperature
broken clouds
4
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
9
kph wind from SE

Allentown weather for Thursday 23rd April 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 23°C, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the north-west.

23
°C maximum temperature
7
°C minimum temperature
broken clouds
9
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
9
kph wind from NW

Allentown weather for Friday 24th April 2026

Expect sunshine and showers in Allentown, Pennsylvania with a maximum temperature of 24°C, maximum UV of 5 (Moderate) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 35% chance of some rain and a light breeze of 8 kph from the east.