Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 27°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Wednesday
27th May
27

19

1

6
Thursday
28th May
22

14

9

6
Friday
29th May
24

11

9

7
Saturday
30th May
22

12

6

5
Sunday
31st May
21

9

6

8

5-day weather forecast updated at 04:01 on Wednesday 27th May 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 27th May 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 6 (High) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the west.

27
°C maximum temperature
19
°C minimum temperature
broken clouds
1
hour of sunshine
6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
12
kph wind from W

Allentown weather for Thursday 28th May 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 22°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the north.

22
°C maximum temperature
14
°C minimum temperature
scattered clouds
9
hours of sunshine
6
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
21
kph wind from N

Allentown weather for Friday 29th May 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 24°C, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the west.

24
°C maximum temperature
11
°C minimum temperature
scattered clouds
9
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
0
no heat & humidity
13
kph wind from W

Allentown weather for Saturday 30th May 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north.

22
°C maximum temperature
12
°C minimum temperature
broken clouds
6
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
19
kph wind from N

Allentown weather for Sunday 31st May 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 21°C, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the north-west.