Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 1°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Saturday
27th Dec
1

-4

1

1
Sunday
28th Dec
3

-4

2

2
Monday
29th Dec
10

-2

1

1
Tuesday
30th Dec
1

-4

6

0
Wednesday
31st Dec
3

-4

3

1

5-day weather forecast updated at 04:01 on Saturday 27th December 2025 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 Saturday 27th December 2025

Expect mostly cloudy with light snow in Allentown, Pennsylvania with a maximum temperature of 1°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0-2 cm of snow expected with 6% chance of some snow and a light breeze of 12 kph from the north-east.

1
°C maximum temperature
-4
°C minimum temperature
mostly cloudy with light snow
1
hour of sunshine
1
UV index (Low)
6
% chance of some snow
<2
cm of snow expected
-2
°C wind chill
12
kph wind from NE

Allentown weather for Sunday 28th December 2025

Expect mostly cloudy with rain in Allentown, Pennsylvania with a maximum temperature of 3°C, maximum UV of 2 (Low) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 62% chance of some rain and a light breeze of 10 kph from the south.

3
°C maximum temperature
-4
°C minimum temperature
mostly cloudy with rain
2
hours of sunshine
2
UV index (Low)
62
% chance of some rain
<10
mm of rainfall expected
0
°C wind chill
10
kph wind from S

Allentown weather for Monday 29th December 2025

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 10°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 61% chance of some rain and a fresh breeze of 30 kph from the west.

10
°C maximum temperature
-2
°C minimum temperature
mostly cloudy with light rain
1
hour of sunshine
1
UV index (Low)
61
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
30
kph wind from W

Allentown weather for Tuesday 30th December 2025

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 1°C and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a fresh breeze of 31 kph from the west.

1
°C maximum temperature
-4
°C minimum temperature
scattered clouds
6
hours of sunshine
0
UV index (None)
0
mm of rainfall expected
-5
°C wind chill
31
kph wind from W

Allentown weather for Wednesday 31st December 2025

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 3°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the west.