Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 0°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Monday
8th Dec
0

-8

1

2
Tuesday
9th Dec
-1

-9

4

1
Wednesday
10th Dec
3

-2

1

0
Thursday
11th Dec
2

-4

4

1
Friday
12th Dec
1

-5

4

1

5-day weather forecast updated at 04:02 on Monday 8th 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 Monday 8th December 2025

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 0°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 18 kph from the north.

0
°C maximum temperature
-8
°C minimum temperature
broken clouds
1
hour of sunshine
2
UV index (Low)
0
cm of snow expected
-4
°C wind chill
18
kph wind from N

Allentown weather for Tuesday 9th December 2025

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of -1°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 15 kph from the south.

-1
°C maximum temperature
-9
°C minimum temperature
broken clouds
4
hours of sunshine
1
UV index (Low)
0
cm of snow expected
-6
°C wind chill
15
kph wind from S

Allentown weather for Wednesday 10th December 2025

Expect cloudy with sleet or snow in Allentown, Pennsylvania with a maximum temperature of 3°C and 1 hour of bright sunshine. There are 5-10 mm of sleet/snow expected with 88% chance of some sleet or snow and a gentle breeze of 18 kph from the south-west.

3
°C maximum temperature
-2
°C minimum temperature
cloudy with sleet or snow
1
hour of sunshine
0
UV index (None)
88
% chance of some sleet or snow
<10
mm of sleet/snow expected
-1
°C wind chill
18
kph wind from SW

Allentown weather for Thursday 11th December 2025

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 2°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 23 kph from the west.

2
°C maximum temperature
-4
°C minimum temperature
broken clouds
4
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
-3
°C wind chill
23
kph wind from W

Allentown weather for Friday 12th December 2025

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 1°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the west.