Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 18°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Thursday
7th May
18

9

8

6
Friday
8th May
16

7

6

4
Saturday
9th May
18

11

3

2
Sunday
10th May
25

10

9

6
Monday
11th May
16

9

6

3

5-day weather forecast updated at 04:01 on Thursday 7th 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 Thursday 7th May 2026

Expect sunshine and showers in Allentown, Pennsylvania with a maximum temperature of 18°C, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 27% chance of some rain and a light breeze of 12 kph from the north-west.

18
°C maximum temperature
9
°C minimum temperature
sunshine and showers
8
hours of sunshine
6
UV index (High)
27
% chance of some rain
<2
mm of rainfall expected
18
°C wind chill
12
kph wind from NW

Allentown weather for Friday 8th May 2026

Expect sunshine and showers in Allentown, Pennsylvania with a maximum temperature of 16°C, maximum UV of 4 (Moderate) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 12% chance of some rain and a gentle breeze of 17 kph from the west.

16
°C maximum temperature
7
°C minimum temperature
sunshine and showers
6
hours of sunshine
4
UV index (Moderate)
12
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
17
kph wind from W

Allentown weather for Saturday 9th May 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 18°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 5-10 mm of rainfall expected with 97% chance of some rain and a gentle breeze of 13 kph from the south-west.

18
°C maximum temperature
11
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
2
UV index (Low)
97
% chance of some rain
<10
mm of rainfall expected
18
°C wind chill
13
kph wind from SW

Allentown weather for Sunday 10th May 2026

Expect sunshine and showers in Allentown, Pennsylvania with a maximum temperature of 25°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 2-5 mm of rainfall expected with 62% chance of some rain and a light breeze of 12 kph from the south-west.

25
°C maximum temperature
10
°C minimum temperature
sunshine and showers
9
hours of sunshine
6
UV index (High)
62
% chance of some rain
<5
mm of rainfall expected
25
°C wind chill
12
kph wind from SW

Allentown weather for Monday 11th May 2026

Expect sunshine and showers in Allentown, Pennsylvania with a maximum temperature of 16°C, maximum UV of 3 (Moderate) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 51% chance of some rain and a gentle breeze of 16 kph from the north-west.