Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 25°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Tuesday
16th Jun
25

14

12

8
Wednesday
17th Jun
25

16

6

7
Thursday
18th Jun
31

19

4

8
Friday
19th Jun
26

18

9

7
Saturday
20th Jun
26

16

11

9

5-day weather forecast updated at 04:01 on Tuesday 16th June 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 Tuesday 16th June 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 25°C, maximum UV of 8 (Very High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the west.

25
°C maximum temperature
14
°C minimum temperature
scattered clouds
12
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
25
°C wind chill
8
kph wind from W

Allentown weather for Wednesday 17th June 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 25°C, maximum UV of 7 (High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 55% chance of some rain and a gentle breeze of 13 kph from the south.

25
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
6
hours of sunshine
7
UV index (High)
55
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
13
kph wind from S

Allentown weather for Thursday 18th June 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 67% chance of some rain and a moderate breeze of 22 kph from the south-west.

31
°C maximum temperature
19
°C minimum temperature
isolated thunderstorms
4
hours of sunshine
8
UV index (Very High)
67
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
22
kph wind from SW

Allentown weather for Friday 19th June 2026

Expect sunshine and showers in Allentown, Pennsylvania with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 27% chance of some rain and a moderate breeze of 21 kph from the west.

26
°C maximum temperature
18
°C minimum temperature
sunshine and showers
9
hours of sunshine
7
UV index (High)
27
% chance of some rain
<2
mm of rainfall expected
L
low heat & humidity
21
kph wind from W

Allentown weather for Saturday 20th June 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 26°C, maximum UV of 9 (Very High) and 11 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the north-west.