Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 21°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Friday
9th Oct
21

8

11

4
Saturday
10th Oct
20

8

9

5
Sunday
11th Oct
17

12

0

1
Monday
12th Oct
22

15

2

3
Tuesday
13th Oct
24

13

7

5

5-day weather forecast updated at 04:01 on Friday 9th 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 Friday 9th October 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 21°C, maximum UV of 4 (Moderate) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the west.

21
°C maximum temperature
8
°C minimum temperature
scattered clouds
11
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
15
kph wind from W

Allentown weather for Saturday 10th October 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 20°C, maximum UV of 5 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the south-east.

20
°C maximum temperature
8
°C minimum temperature
broken clouds
9
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
20
°C wind chill
6
kph wind from SE

Allentown weather for Sunday 11th October 2026

Expect overcast with light rain in Allentown, Pennsylvania with a maximum temperature of 17°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 20-30 mm of rainfall expected with 98% chance of some rain and a gentle breeze of 16 kph from the east.

17
°C maximum temperature
12
°C minimum temperature
overcast with light rain
0
hours of sunshine
1
UV index (Low)
98
% chance of some rain
<30
mm of rainfall expected
0
no heat & humidity
16
kph wind from E

Allentown weather for Monday 12th October 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 22°C, maximum UV of 3 (Moderate) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 38% chance of some rain and a light breeze of 11 kph from the north.

22
°C maximum temperature
15
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
3
UV index (Moderate)
38
% chance of some rain
<5
mm of rainfall expected
22
°C wind chill
11
kph wind from N

Allentown weather for Tuesday 13th October 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 24°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the west.