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.

Monday
5th Jan
1

-4

1

1
Tuesday
6th Jan
5

-2

3

1
Wednesday
7th Jan
8

1

2

1
Thursday
8th Jan
8

0

3

1
Friday
9th Jan
12

4

0

0

5-day weather forecast updated at 04:01 on Monday 5th January 2026 GMT

More about Allentown

Allentown by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Pennsylvania

Travelsphere: up to £800 off worldwide holidays

Sale

Save up to £800 per couple on selected worldwide tours
Plus save up to £300 per couple on European tours
Book tours online in Travelsphere New Year sale

Go to Travelsphere deal >>

Expires at 23:59 on Saturday 28th Feb 2026 · View all Travelsphere offers

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 5th January 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 1°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 12 kph from the south.

1
°C maximum temperature
-4
°C minimum temperature
broken clouds
1
hour of sunshine
1
UV index (Low)
0
mm of rainfall expected
-2
°C wind chill
12
kph wind from S

Allentown weather for Tuesday 6th January 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 5°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the east.

5
°C maximum temperature
-2
°C minimum temperature
broken clouds
3
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
3
°C wind chill
7
kph wind from E

Allentown weather for Wednesday 7th January 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 8°C, maximum UV of 1 (Low) and 2 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 18 kph from the west.

8
°C maximum temperature
1
°C minimum temperature
broken clouds
2
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
5
°C wind chill
18
kph wind from W

Allentown weather for Thursday 8th January 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 8°C, maximum UV of 1 (Low) and 3 hours of bright sunshine. There are 0 mm of rainfall expected and little or no wind of 6 kph from the west.

8
°C maximum temperature
0
°C minimum temperature
broken clouds
3
hours of sunshine
1
UV index (Low)
0
mm of rainfall expected
7
°C wind chill
6
kph wind from W

Allentown weather for Friday 9th January 2026

Expect cloudy with some rain in Allentown, Pennsylvania with a maximum temperature of 12°C and no hours of bright sunshine. There are 10-20 mm of rainfall expected with 64% chance of some rain and a light breeze of 12 kph from the south.