Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 6°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Wednesday
18th Feb
6

1

0

2
Thursday
19th Feb
5

3

0

1
Friday
20th Feb
5

2

0

1
Saturday
21st Feb
9

2

4

2
Sunday
22nd Feb
2

-1

0

2

5-day weather forecast updated at 04:02 on Wednesday 18th February 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 18th February 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 6°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 2-5 mm of rainfall expected with 78% chance of some rain and little or no wind of 4 kph from the north-east.

6
°C maximum temperature
1
°C minimum temperature
mostly cloudy with light rain
0
hours of sunshine
2
UV index (Low)
78
% chance of some rain
<5
mm of rainfall expected
6
°C wind chill
4
kph wind from NE

Allentown weather for Thursday 19th February 2026

Expect overcast skies in Allentown, Pennsylvania with a maximum temperature of 5°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 10 kph from the east.

5
°C maximum temperature
3
°C minimum temperature
overcast skies
0
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
3
°C wind chill
10
kph wind from E

Allentown weather for Friday 20th February 2026

Expect cloudy with some rain in Allentown, Pennsylvania with a maximum temperature of 5°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 91% chance of some rain and a gentle breeze of 14 kph from the east.

5
°C maximum temperature
2
°C minimum temperature
cloudy with some rain
0
hours of sunshine
1
UV index (Low)
91
% chance of some rain
<10
mm of rainfall expected
2
°C wind chill
14
kph wind from E

Allentown weather for Saturday 21st February 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 9°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the west.

9
°C maximum temperature
2
°C minimum temperature
broken clouds
4
hours of sunshine
2
UV index (Low)
0
mm of rainfall expected
7
°C wind chill
11
kph wind from W

Allentown weather for Sunday 22nd February 2026

Expect cloudy with some snow in Allentown, Pennsylvania with a maximum temperature of 2°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 10-20 cm of snow expected with 56% chance of some snow and a gentle breeze of 18 kph from the east.