Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 2°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Saturday
17th Jan
2

-3

1

1
Sunday
18th Jan
0

-7

0

1
Monday
19th Jan
0

-8

4

2
Tuesday
20th Jan
-7

-12

7

1
Wednesday
21st Jan
0

-14

3

2

5-day weather forecast updated at 04:02 on Saturday 17th 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 Saturday 17th January 2026

Expect mostly cloudy with light snow in Allentown, Pennsylvania with a maximum temperature of 2°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 2-5 cm of snow expected with 85% chance of some snow and a light breeze of 8 kph from the south-west.

2
°C maximum temperature
-3
°C minimum temperature
mostly cloudy with light snow
1
hour of sunshine
1
UV index (Low)
85
% chance of some snow
<5
cm of snow expected
-1
°C wind chill
8
kph wind from SW

Allentown weather for Sunday 18th January 2026

Expect mostly cloudy with light snow in Allentown, Pennsylvania with a maximum temperature of 0°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 0-2 cm of snow expected with 20% chance of some snow and a light breeze of 10 kph from the west.

0
°C maximum temperature
-7
°C minimum temperature
mostly cloudy with light snow
0
hours of sunshine
1
UV index (Low)
20
% chance of some snow
<2
cm of snow expected
-3
°C wind chill
10
kph wind from W

Allentown weather for Monday 19th January 2026

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

0
°C maximum temperature
-8
°C minimum temperature
broken clouds
4
hours of sunshine
2
UV index (Low)
0
cm of snow expected
-6
°C wind chill
23
kph wind from W

Allentown weather for Tuesday 20th January 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of -7°C, maximum UV of 1 (Low) and 7 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 19 kph from the west.

-7
°C maximum temperature
-12
°C minimum temperature
scattered clouds
7
hours of sunshine
1
UV index (Low)
0
cm of snow expected
-14
°C wind chill
19
kph wind from W

Allentown weather for Wednesday 21st January 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 0°C, maximum UV of 2 (Low) and 3 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 17 kph from the south.