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.

Friday
26th Dec
-1

-5

1

1
Saturday
27th Dec
-1

-4

1

0
Sunday
28th Dec
2

-5

0

0
Monday
29th Dec
7

-4

2

1
Tuesday
30th Dec
-1

-5

7

2

5-day weather forecast updated at 04:01 on Thursday 25th 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 Friday 26th December 2025

Expect mostly cloudy with snow in Allentown, Pennsylvania with a maximum temperature of -1°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 10-20 cm of snow expected with 100% chance of some snow and a gentle breeze of 13 kph from the east.

-1
°C maximum temperature
-5
°C minimum temperature
mostly cloudy with snow
1
hour of sunshine
1
UV index (Low)
100
% chance of some snow
<20
cm of snow expected
-6
°C wind chill
13
kph wind from E

Allentown weather for Saturday 27th December 2025

Expect cloudy with some snow in Allentown, Pennsylvania with a maximum temperature of -1°C and 1 hour of bright sunshine. There are 5-10 cm of snow expected with 58% chance of some snow and a gentle breeze of 14 kph from the north-east.

-1
°C maximum temperature
-4
°C minimum temperature
cloudy with some snow
1
hour of sunshine
0
UV index (None)
58
% chance of some snow
<10
cm of snow expected
-5
°C wind chill
14
kph wind from NE

Allentown weather for Sunday 28th December 2025

Expect overcast with light rain in Allentown, Pennsylvania with a maximum temperature of 2°C and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 90% chance of some rain and a light breeze of 11 kph from the south.

2
°C maximum temperature
-5
°C minimum temperature
overcast with light rain
0
hours of sunshine
0
UV index (None)
90
% chance of some rain
<10
mm of rainfall expected
-1
°C wind chill
11
kph wind from S

Allentown weather for Monday 29th December 2025

Expect cloudy with sleet or snow in Allentown, Pennsylvania with a maximum temperature of 7°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 5-10 mm of sleet/snow expected with 60% chance of some sleet or snow and a moderate breeze of 28 kph from the west.

7
°C maximum temperature
-4
°C minimum temperature
cloudy with sleet or snow
2
hours of sunshine
1
UV index (Low)
60
% chance of some sleet or snow
<10
mm of sleet/snow expected
2
°C wind chill
28
kph wind from W

Allentown weather for Tuesday 30th December 2025

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of -1°C, maximum UV of 2 (Low) and 7 hours of bright sunshine. There are 0 cm of snow expected and a moderate breeze of 25 kph from the west.