Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 16°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Saturday
9th May
16

11

3

1
Sunday
10th May
21

12

5

6
Monday
11th May
18

9

2

6
Tuesday
12th May
18

6

9

5
Wednesday
13th May
16

7

0

2

5-day weather forecast updated at 04:01 on Saturday 9th 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 9th May 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 16°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 99% chance of some rain and a light breeze of 9 kph from the south-west.

16
°C maximum temperature
11
°C minimum temperature
mostly cloudy with light rain
3
hours of sunshine
1
UV index (Low)
99
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
9
kph wind from SW

Allentown weather for Sunday 10th May 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 21°C, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 52% chance of some rain and a gentle breeze of 13 kph from the west.

21
°C maximum temperature
12
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
6
UV index (High)
52
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
13
kph wind from W

Allentown weather for Monday 11th May 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 18°C, maximum UV of 6 (High) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 23% chance of some rain and a light breeze of 10 kph from the north.

18
°C maximum temperature
9
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
6
UV index (High)
23
% chance of some rain
<5
mm of rainfall expected
18
°C wind chill
10
kph wind from N

Allentown weather for Tuesday 12th May 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 18°C, maximum UV of 5 (Moderate) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the north-west.

18
°C maximum temperature
6
°C minimum temperature
scattered clouds
9
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
18
°C wind chill
10
kph wind from NW

Allentown weather for Wednesday 13th May 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 16°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 85% chance of some rain and a gentle breeze of 15 kph from the south.