Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 16°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Wednesday
22nd Apr
16

7

3

2
Thursday
23rd Apr
21

7

7

7
Friday
24th Apr
19

8

4

5
Saturday
25th Apr
11

7

0

1
Sunday
26th Apr
16

6

7

4

5-day weather forecast updated at 04:01 on Wednesday 22nd 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 Wednesday 22nd April 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 16°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 49% chance of some rain and a light breeze of 11 kph from the south-east.

16
°C maximum temperature
7
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
2
UV index (Low)
49
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
11
kph wind from SE

Allentown weather for Thursday 23rd April 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 21°C, 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 north-west.

21
°C maximum temperature
7
°C minimum temperature
broken clouds
7
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
15
kph wind from NW

Allentown weather for Friday 24th April 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north.

19
°C maximum temperature
8
°C minimum temperature
broken clouds
4
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
19
°C wind chill
7
kph wind from N

Allentown weather for Saturday 25th April 2026

Expect cloudy with some rain in Allentown, Pennsylvania with a maximum temperature of 11°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 86% chance of some rain and a gentle breeze of 14 kph from the east.

11
°C maximum temperature
7
°C minimum temperature
cloudy with some rain
0
hours of sunshine
1
UV index (Low)
86
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
14
kph wind from E

Allentown weather for Sunday 26th April 2026

Expect sunshine and showers in Allentown, Pennsylvania with a maximum temperature of 16°C, maximum UV of 4 (Moderate) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 38% chance of some rain and a light breeze of 8 kph from the north-east.