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Today Hourly 7 days 30 days September
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September 2025 Weather | Allentown, Pennsylvania
Mon 9/1
Rainy WeatherRainy weather, precipitation in the form of water droplets falling from the sky.
Day 77°
Night 64°
64
Tue 9/2
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 77°
Night 63°
20
Wed 9/3
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 82°
Night 61°
20
Thu 9/4
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 77°
Night 63°
25
Fri 9/5
Rainy WeatherRainy weather, precipitation in the form of water droplets falling from the sky.
Day 77°
Night 63°
60
Sat 9/6
Stormy WeatherStormy weather, thunderstorms.
Day 79°
Night 63°
70
Sun 9/7
Stormy WeatherStormy weather, thunderstorms.
Day 75°
Night 63°
70
Mon 9/8
Stormy WeatherStormy weather, thunderstorms.
Day 75°
Night 63°
63
Tue 9/9
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 77°
Night 63°
25
Wed 9/10
Rainy WeatherRainy weather, precipitation in the form of water droplets falling from the sky.
Day 81°
Night 61°
56
Thu 9/11
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 81°
Night 63°
20
Fri 9/12
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 82°
Night 54°
25
Sat 9/13
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 82°
Night 59°
0
Sun 9/14
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 77°
Night 57°
25
Mon 9/15
Stormy WeatherStormy weather, thunderstorms.
Day 75°
Night 48°
70
Tue 9/16
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 72°
Night 48°
0
Wed 9/17
Sunny WeatherSunny weather, clear skies and sunny weather.
Day 72°
Night 50°
0
Thu 9/18
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 72°
Night 55°
2
Fri 9/19
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 73°
Night 54°
4
Sat 9/20
Stormy WeatherStormy weather, thunderstorms.
Day 73°
Night 57°
65
Sun 9/21
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 77°
Night 54°
Mon 9/22
Sunny with a Chance of ThunderstormsSunny weather with a possibility of isolated thunderstorms developing later in the day.
Day 79°
Night 48°
Tue 9/23
Sunny WeatherSunny weather, clear skies and sunny weather.
Day 72°
Night 55°
Wed 9/24
Sunny WeatherSunny weather, clear skies and sunny weather.
Day 79°
Night 57°
Thu 9/25
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 81°
Night 57°
Fri 9/26
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 81°
Night 46°
Sat 9/27
Sunny with a Chance of ThunderstormsSunny weather with a possibility of isolated thunderstorms developing later in the day.
Day 79°
Night 45°
Sun 9/28
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 66°
Night 45°
Mon 9/29
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 66°
Night 46°
Tue 9/30
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 66°
Night 46°