Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 19°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Thursday
15th Oct
19

11

7

5
Friday
16th Oct
22

12

2

3
Saturday
17th Oct
13

3

6

3
Sunday
18th Oct
14

2

11

4
Monday
19th Oct
16

2

11

5

5-day weather forecast updated at 04:01 on Thursday 15th October 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 15th October 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 19°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the south-east.

19
°C maximum temperature
11
°C minimum temperature
broken clouds
7
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
19
°C wind chill
11
kph wind from SE

Allentown weather for Friday 16th October 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 22°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 93% chance of some rain and a gentle breeze of 15 kph from the south-west.

22
°C maximum temperature
12
°C minimum temperature
isolated thunderstorms
2
hours of sunshine
3
UV index (Moderate)
93
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
15
kph wind from SW

Allentown weather for Saturday 17th October 2026

Expect sunshine and showers in Allentown, Pennsylvania with a maximum temperature of 13°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 11% chance of some rain and a moderate breeze of 20 kph from the north.

13
°C maximum temperature
3
°C minimum temperature
sunshine and showers
6
hours of sunshine
3
UV index (Moderate)
11
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
20
kph wind from N

Allentown weather for Sunday 18th October 2026

Expect clear skies in Allentown, Pennsylvania with a maximum temperature of 14°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north.

14
°C maximum temperature
2
°C minimum temperature
clear skies
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
14
°C wind chill
7
kph wind from N

Allentown weather for Monday 19th October 2026

Expect clear skies in Allentown, Pennsylvania with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the north.