Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 26°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Saturday
20th Jun
26

15

13

8
Sunday
21st Jun
27

16

9

7
Monday
22nd Jun
24

18

1

4
Tuesday
23rd Jun
26

18

8

7
Wednesday
24th Jun
27

16

9

9

5-day weather forecast updated at 04:01 on Saturday 20th 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 Saturday 20th June 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 13 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 21 kph from the west.

26
°C maximum temperature
15
°C minimum temperature
scattered clouds
13
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
L
low heat & humidity
21
kph wind from W

Allentown weather for Sunday 21st June 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 14 kph from the west.

27
°C maximum temperature
16
°C minimum temperature
scattered clouds
9
hours of sunshine
7
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
14
kph wind from W

Allentown weather for Monday 22nd June 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 24°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 30-40 mm of rainfall expected with 96% chance of some rain and a light breeze of 10 kph from the east.

24
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
4
UV index (Moderate)
96
% chance of some rain
<40
mm of rainfall expected
24
°C wind chill
10
kph wind from E

Allentown weather for Tuesday 23rd June 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 7 (High) and 8 hours of bright sunshine. There are 5-10 mm of rainfall expected with 27% chance of some rain and a gentle breeze of 14 kph from the north-west.

26
°C maximum temperature
18
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
7
UV index (High)
27
% chance of some rain
<10
mm of rainfall expected
L
low heat & humidity
14
kph wind from NW

Allentown weather for Wednesday 24th June 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 27°C, low levels of heat & humidity, maximum UV of 9 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the north-west.