Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 12°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Monday
23rd Mar
12

1

4

5
Tuesday
24th Mar
8

1

10

5
Wednesday
25th Mar
13

2

1

4
Thursday
26th Mar
18

7

4

6
Friday
27th Mar
15

0

4

5

5-day weather forecast updated at 04:01 on Monday 23rd March 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 Monday 23rd March 2026

Expect mostly cloudy with rain in Allentown, Pennsylvania with a maximum temperature of 12°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 33% chance of some rain and a moderate breeze of 21 kph from the north-west.

12
°C maximum temperature
1
°C minimum temperature
mostly cloudy with rain
4
hours of sunshine
5
UV index (Moderate)
33
% chance of some rain
<20
mm of rainfall expected
0
no heat & humidity
21
kph wind from NW

Allentown weather for Tuesday 24th March 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 8°C, maximum UV of 5 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the north-west.

8
°C maximum temperature
1
°C minimum temperature
scattered clouds
10
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
6
°C wind chill
12
kph wind from NW

Allentown weather for Wednesday 25th March 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 13°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 15 kph from the south.

13
°C maximum temperature
2
°C minimum temperature
broken clouds
1
hour of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
13
°C wind chill
15
kph wind from S

Allentown weather for Thursday 26th March 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 18°C, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 28% chance of some rain and a gentle breeze of 14 kph from the south-west.

18
°C maximum temperature
7
°C minimum temperature
mostly cloudy with light rain
4
hours of sunshine
6
UV index (High)
28
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
14
kph wind from SW

Allentown weather for Friday 27th March 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 15°C, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 48% chance of some rain and a gentle breeze of 18 kph from the north-west.