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.

Wednesday
4th Mar
12

2

2

4
Thursday
5th Mar
10

5

0

1
Friday
6th Mar
10

5

0

1
Saturday
7th Mar
16

5

1

5
Sunday
8th Mar
20

11

1

4

5-day weather forecast updated at 04:01 on Wednesday 4th 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 Wednesday 4th March 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 12°C, maximum UV of 4 (Moderate) and 2 hours of bright sunshine. There are 0-2 mm of rainfall expected with 22% chance of some rain and little or no wind of 4 kph from the west.

12
°C maximum temperature
2
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
4
UV index (Moderate)
22
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
4
kph wind from W

Allentown weather for Thursday 5th March 2026

Expect cloudy with some rain in Allentown, Pennsylvania with a maximum temperature of 10°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 97% chance of some rain and a light breeze of 10 kph from the east.

10
°C maximum temperature
5
°C minimum temperature
cloudy with some rain
0
hours of sunshine
1
UV index (Low)
97
% chance of some rain
<20
mm of rainfall expected
8
°C wind chill
10
kph wind from E

Allentown weather for Friday 6th March 2026

Expect mostly cloudy with rain in Allentown, Pennsylvania with a maximum temperature of 10°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 39% chance of some rain and a light breeze of 10 kph from the east.

10
°C maximum temperature
5
°C minimum temperature
mostly cloudy with rain
0
hours of sunshine
1
UV index (Low)
39
% chance of some rain
<10
mm of rainfall expected
8
°C wind chill
10
kph wind from E

Allentown weather for Saturday 7th March 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 16°C, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 68% chance of some rain and a light breeze of 11 kph from the south.

16
°C maximum temperature
5
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
5
UV index (Moderate)
68
% chance of some rain
<2
mm of rainfall expected
16
°C wind chill
11
kph wind from S

Allentown weather for Sunday 8th March 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 20°C, maximum UV of 4 (Moderate) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 30% chance of some rain and a light breeze of 11 kph from the west.