Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 13°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Saturday
23rd May
13

9

0

UV1
Sunday
24th May
15

10

0

UV2
Monday
25th May
24

13

5

UV6
Tuesday
26th May
26

14

2

UV6
Wednesday
27th May
28

17

0

UV9

5-day weather forecast updated at 04:01 on Saturday 23rd 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 Saturday 23rd May 2026

Expect cloudy with some rain in Allentown, Pennsylvania with a maximum temperature of 13°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 20-30 mm of rainfall expected with 100% chance of some rain and a moderate breeze of 20 kph from the east.

13
°C maximum temperature
9
°C minimum temperature
cloudy with some rain
0
hours of sunshine
UV1
UV index (Low)
100
% chance of some rain
<30
mm of rainfall expected
0
no heat & humidity
20
kph wind from E

Allentown weather for Sunday 24th May 2026

Expect cloudy with some rain in Allentown, Pennsylvania with a maximum temperature of 15°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 30-40 mm of rainfall expected with 82% chance of some rain and a gentle breeze of 17 kph from the east.

15
°C maximum temperature
10
°C minimum temperature
cloudy with some rain
0
hours of sunshine
UV2
UV index (Low)
82
% chance of some rain
<40
mm of rainfall expected
15
°C wind chill
17
kph wind from E

Allentown weather for Monday 25th May 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 24°C, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 47% chance of some rain and little or no wind of 6 kph from the west.

24
°C maximum temperature
13
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
UV6
UV index (High)
47
% chance of some rain
<5
mm of rainfall expected
24
°C wind chill
6
kph wind from W

Allentown weather for Tuesday 26th May 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 26°C, low levels of heat & humidity, maximum UV of 6 (High) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the south-west.

26
°C maximum temperature
14
°C minimum temperature
broken clouds
2
hours of sunshine
UV6
UV index (High)
0
mm of rainfall expected
L
low heat & humidity
6
kph wind from SW

Allentown weather for Wednesday 27th May 2026

Expect overcast skies in Allentown, Pennsylvania with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 9 (Very High) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the west.