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.

Wednesday
6th May
21

11

1

2
Thursday
7th May
16

9

2

4
Friday
8th May
18

7

6

5
Saturday
9th May
18

10

3

2
Sunday
10th May
26

10

9

6

5-day weather forecast updated at 04:01 on Wednesday 6th 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 6th May 2026

Expect mostly cloudy with rain in Allentown, Pennsylvania with a maximum temperature of 21°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 5-10 mm of rainfall expected with 91% chance of some rain and a gentle breeze of 19 kph from the south-west.

21
°C maximum temperature
11
°C minimum temperature
mostly cloudy with rain
1
hour of sunshine
2
UV index (Low)
91
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
19
kph wind from SW

Allentown weather for Thursday 7th May 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 16°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a light breeze of 11 kph from the north-west.

16
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
4
UV index (Moderate)
25
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
11
kph wind from NW

Allentown weather for Friday 8th May 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 18°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 west.

18
°C maximum temperature
7
°C minimum temperature
broken clouds
6
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
18
°C wind chill
19
kph wind from W

Allentown weather for Saturday 9th May 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 18°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 69% chance of some rain and a gentle breeze of 13 kph from the south.

18
°C maximum temperature
10
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
2
UV index (Low)
69
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
13
kph wind from S

Allentown weather for Sunday 10th May 2026

Expect sunshine and showers in Allentown, Pennsylvania with a maximum temperature of 26°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 2-5 mm of rainfall expected with 58% chance of some rain and a gentle breeze of 17 kph from the south-west.