Allentown weather live forecast

Today's maximum temperature in Allentown is expected to be 77°F. Select a day from the live weather forecast for Allentown, Pennsylvania, USA for more weather parameters.

Wednesday
30th Sep
77

59

7

3
Thursday
1st Oct
77

64

1

5
Friday
2nd Oct
84

64

4

5
Saturday
3rd Oct
70

54

1

5
Sunday
4th Oct
64

50

0

5

5-day weather forecast updated at 04:01 on Wednesday 30th September 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 30th September 2026

Expect scattered clouds in Allentown, Pennsylvania with a maximum temperature of 77°F, maximum UV of 3 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 5 mph from the south-west.

77
°F maximum temperature
59
°F minimum temperature
scattered clouds
7
hours of sunshine
3
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
5
mph wind from SW

Allentown weather for Thursday 1st October 2026

Expect broken clouds in Allentown, Pennsylvania with a maximum temperature of 77°F, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the south-west.

77
°F maximum temperature
64
°F minimum temperature
broken clouds
1
hour of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
6
mph wind from SW

Allentown weather for Friday 2nd October 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 84°F, moderate levels of heat & humidity, maximum UV of 5 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 55% chance of some rain and a gentle breeze of 9 mph from the south-west.

84
°F maximum temperature
64
°F minimum temperature
mostly cloudy with light rain
4
hours of sunshine
5
UV index (Moderate)
55
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
9
mph wind from SW

Allentown weather for Saturday 3rd October 2026

Expect mostly cloudy with light rain in Allentown, Pennsylvania with a maximum temperature of 70°F, maximum UV of 5 (Moderate) and 1 hour of bright sunshine. There are 0-2 mm of rainfall expected with 10% chance of some rain and a light breeze of 7 mph from the north.

70
°F maximum temperature
54
°F minimum temperature
mostly cloudy with light rain
1
hour of sunshine
5
UV index (Moderate)
10
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
7
mph wind from N

Allentown weather for Sunday 4th October 2026

Expect overcast skies in Allentown, Pennsylvania with a maximum temperature of 64°F, maximum UV of 5 (Moderate) and no hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 6 mph from the south-east.