Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 8°C. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Wednesday
14th Jan
8

4

0

1
Thursday
15th Jan
4

-6

3

1
Friday
16th Jan
0

-7

6

2
Saturday
17th Jan
3

-3

6

1
Sunday
18th Jan
-1

-6

4

2

5-day weather forecast updated at 04:02 on Wednesday 14th 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 Wednesday 14th January 2026

Expect mostly cloudy with rain in Allentown, Pennsylvania with a maximum temperature of 8°C, maximum UV of 1 (Low) and no hours of bright sunshine. There are 5-10 mm of rainfall expected with 73% chance of some rain and a light breeze of 10 kph from the south-west.

8
°C maximum temperature
4
°C minimum temperature
mostly cloudy with rain
0
hours of sunshine
1
UV index (Low)
73
% chance of some rain
<10
mm of rainfall expected
6
°C wind chill
10
kph wind from SW

Allentown weather for Thursday 15th January 2026

Expect cloudy with sleet or snow in Allentown, Pennsylvania with a maximum temperature of 4°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0-2 mm of sleet/snow expected with 13% chance of some sleet or snow and a moderate breeze of 23 kph from the west.

4
°C maximum temperature
-6
°C minimum temperature
cloudy with sleet or snow
3
hours of sunshine
1
UV index (Low)
13
% chance of some sleet or snow
<2
mm of sleet/snow expected
-1
°C wind chill
23
kph wind from W

Allentown weather for Friday 16th January 2026

Expect clear skies with flurries of snow in Allentown, Pennsylvania with a maximum temperature of 0°C, maximum UV of 2 (Low) and 6 hours of bright sunshine. There are 0-2 cm of snow expected with 4% chance of some snow and a gentle breeze of 19 kph from the west.

0
°C maximum temperature
-7
°C minimum temperature
clear skies with flurries of snow
6
hours of sunshine
2
UV index (Low)
4
% chance of some snow
<2
cm of snow expected
-5
°C wind chill
19
kph wind from W

Allentown weather for Saturday 17th January 2026

Expect clear skies with flurries of snow in Allentown, Pennsylvania with a maximum temperature of 3°C, maximum UV of 1 (Low) and 6 hours of bright sunshine. There are 0-2 cm of snow expected with 40% chance of some snow and a gentle breeze of 13 kph from the south-west.

3
°C maximum temperature
-3
°C minimum temperature
clear skies with flurries of snow
6
hours of sunshine
1
UV index (Low)
40
% chance of some snow
<2
cm of snow expected
0
°C wind chill
13
kph wind from SW

Allentown weather for Sunday 18th January 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of -1°C, maximum UV of 2 (Low) and 4 hours of bright sunshine. There are 0 cm of snow expected and a gentle breeze of 16 kph from the west.