Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 19°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Monday
9th Mar
19

4

12

4
Tuesday
10th Mar
22

7

9

5
Wednesday
11th Mar
21

11

3

4
Thursday
12th Mar
20

1

6

2
Friday
13th Mar
7

-1

1

4

5-day weather forecast updated at 04:01 on Monday 9th 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 9th March 2026

Expect clear skies in Allentown, Pennsylvania with a maximum temperature of 19°C, maximum UV of 4 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-west.

19
°C maximum temperature
4
°C minimum temperature
clear skies
12
hours of sunshine
4
UV index (Moderate)
0
mm of rainfall expected
19
°C wind chill
13
kph wind from SW

Allentown weather for Tuesday 10th March 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 22°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 south-west.

22
°C maximum temperature
7
°C minimum temperature
scattered clouds
9
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
10
kph wind from SW

Allentown weather for Wednesday 11th March 2026

Expect isolated thunderstorms in Allentown, Pennsylvania with a maximum temperature of 21°C, maximum UV of 4 (Moderate) and 3 hours of bright sunshine. There are 0-2 mm of rainfall expected with 58% chance of some rain and a gentle breeze of 19 kph from the south.

21
°C maximum temperature
11
°C minimum temperature
isolated thunderstorms
3
hours of sunshine
4
UV index (Moderate)
58
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
19
kph wind from S

Allentown weather for Thursday 12th March 2026

Expect sunshine and showers in Allentown, Pennsylvania with a maximum temperature of 20°C, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 64% chance of some rain and a moderate breeze of 23 kph from the north-west.

20
°C maximum temperature
1
°C minimum temperature
sunshine and showers
6
hours of sunshine
2
UV index (Low)
64
% chance of some rain
<5
mm of rainfall expected
20
°C wind chill
23
kph wind from NW

Allentown weather for Friday 13th March 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 7°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 29% chance of some rain and a moderate breeze of 20 kph from the south.