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
2nd Jan
-1

-6

2

1
Saturday
3rd Jan
-1

-6

0

2
Sunday
4th Jan
1

-6

4

1
Monday
5th Jan
0

-7

6

1
Tuesday
6th Jan
4

-3

6

1

5-day weather forecast updated at 04:01 on Friday 2nd January 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 Friday 2nd January 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of -1°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 16 kph from the west.

-1
°C maximum temperature
-6
°C minimum temperature
broken clouds
2
hours of sunshine
1
UV index (Low)
0
cm of snow expected
-6
°C wind chill
16
kph wind from W

Allentown weather for Saturday 3rd January 2026

Expect mostly cloudy with light snow in Allentown, Pennsylvania with a maximum temperature of -1°C, maximum UV of 2 (Low) and no hours of bright sunshine. There are 0-2 cm of snow expected with 25% chance of some snow and a light breeze of 11 kph from the west.

-1
°C maximum temperature
-6
°C minimum temperature
mostly cloudy with light snow
0
hours of sunshine
2
UV index (Low)
25
% chance of some snow
<2
cm of snow expected
-4
°C wind chill
11
kph wind from W

Allentown weather for Sunday 4th January 2026

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 14 kph from the north-west.

1
°C maximum temperature
-6
°C minimum temperature
broken clouds
4
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
-3
°C wind chill
14
kph wind from NW

Allentown weather for Monday 5th January 2026

Expect clear skies with flurries of snow in Allentown, Pennsylvania with a maximum temperature of 0°C, maximum UV of 1 (Low) and 6 hours of bright sunshine. There are 0-2 cm of snow expected with 21% chance of some snow and a light breeze of 10 kph from the south.

0
°C maximum temperature
-7
°C minimum temperature
clear skies with flurries of snow
6
hours of sunshine
1
UV index (Low)
21
% chance of some snow
<2
cm of snow expected
-4
°C wind chill
10
kph wind from S

Allentown weather for Tuesday 6th January 2026

Expect clear skies with flurries of snow in Allentown, Pennsylvania with a maximum temperature of 4°C, maximum UV of 1 (Low) and 6 hours of bright sunshine. There are 0-2 cm of snow expected with 25% chance of some snow and little or no wind of 6 kph from the south-east.