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.

Wednesday
31st Dec
0

-5

0

1
Thursday
1st Jan
-2

-8

5

1
Friday
2nd Jan
-1

-9

4

1
Saturday
3rd Jan
0

-6

5

1
Sunday
4th Jan
-1

-11

4

1

5-day weather forecast updated at 04:01 on Tuesday 30th 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 Wednesday 31st December 2025

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 25% chance of some snow and a gentle breeze of 19 kph from the west.

0
°C maximum temperature
-5
°C minimum temperature
mostly cloudy with light snow
0
hours of sunshine
1
UV index (Low)
25
% chance of some snow
<2
cm of snow expected
-5
°C wind chill
19
kph wind from W

Allentown weather for Thursday 1st January 2026

Expect clear skies with flurries of snow in Allentown, Pennsylvania with a maximum temperature of -2°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0-2 cm of snow expected with 10% chance of some snow and a gentle breeze of 18 kph from the west.

-2
°C maximum temperature
-8
°C minimum temperature
clear skies with flurries of snow
5
hours of sunshine
1
UV index (Low)
10
% chance of some snow
<2
cm of snow expected
-7
°C wind chill
18
kph wind from W

Allentown weather for Friday 2nd January 2026

Expect clear skies with flurries of snow in Allentown, Pennsylvania with a maximum temperature of -1°C, maximum UV of 1 (Low) and 4 hours of bright sunshine. There are 0-2 cm of snow expected with 6% chance of some snow and a gentle breeze of 15 kph from the west.

-1
°C maximum temperature
-9
°C minimum temperature
clear skies with flurries of snow
4
hours of sunshine
1
UV index (Low)
6
% chance of some snow
<2
cm of snow expected
-6
°C wind chill
15
kph wind from W

Allentown weather for Saturday 3rd January 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 0°C, maximum UV of 1 (Low) and 5 hours of bright sunshine. There are 0 cm of snow expected and a light breeze of 10 kph from the north-west.

0
°C maximum temperature
-6
°C minimum temperature
broken clouds
5
hours of sunshine
1
UV index (Low)
0
cm of snow expected
-3
°C wind chill
10
kph wind from NW

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 cm of snow expected and a light breeze of 8 kph from the north-west.