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City of Allentown, PAAllentown, PA 14 Day Weather - 18017 WeatherWorld.com
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Allentown, PA Weather Forecast
Allentown, PA Weather Forecast Dated: 252 PM Mon Aug 31 2026 (Allentown Time)
Expect a mild stretch with a mix of sun and clouds and frequent chances of rain over the next two weeks. generally humid conditions and no major pressure swings will dominate.
Monday, August 31, 2026
Mid-Morning
69°F 21°C
Light Drizzle
Mid-Afternoon
77°F 25°C
Overcast
Early-Evening
72°F 22°C
Scattered Showers
Warm with overcast skies, steady humidity and steady pressure.
Tuesday, September 1, 2026
Mid-Morning
71°F 22°C
Cloudy
Mid-Afternoon
86°F 30°C
Overcast
Early-Evening
80°F 27°C
Light Showers
Very warm with overcast skies, steady humidity and steady pressure. Winds shifting from W to SSE at 3 mph 4 km/h.
Wednesday, September 2, 2026
Mid-Morning
71°F 21°C
Light Fog
Mid-Afternoon
90°F 32°C
Sunny
Early-Evening
79°F 27°C
Nearby Thunderstorms
Hot with a mix of sun and clouds, lower humidity and steady pressure. Winds shifting from N to ENE at 8 mph 13 km/h.
Thursday, September 3, 2026
Mid-Morning
72°F 22°C
Overcast
Mid-Afternoon
87°F 30°C
Nearby Thunderstorms
Early-Evening
77°F 25°C
Nearby Thunderstorms
Very warm with cloudy skies, lower humidity and steady pressure. A few isolated thunderstorms. Winds shifting from SSW to N at 7 mph 11 km/h.
Friday, September 4, 2026
Mid-Morning
69°F 21°C
Sunny
Mid-Afternoon
84°F 29°C
Overcast
Early-Evening
75°F 24°C
Sunny
Very warm with overcast skies, lower humidity and steady pressure. Winds shifting from NW to NNE at 8 mph 13 km/h.
Saturday, September 5, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
73°F 23°C
Sunny
Early-Evening
66°F 19°C
Sunny
Warm with mostly sunny skies in the morning, then mostly sunny for the afternoon and evening, steady humidity and steady pressure. Winds NNW at 10 mph 17 km/h.
Sunday, September 6, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
75°F 24°C
Cloudy
Early-Evening
70°F 21°C
Overcast
Warm with mostly cloudy skies, lower humidity and steady pressure.
Monday, September 7, 2026
Mid-Morning
62°F 17°C
Scattered Showers
Mid-Afternoon
70°F 21°C
Scattered Showers
Early-Evening
67°F 20°C
Cloudy
Warm with a mix of sun and clouds, steady humidity and steady pressure. A few spotty showers; otherwise dry.
Tuesday, September 8, 2026
Mid-Morning
64°F 18°C
Sunny
Mid-Afternoon
75°F 24°C
Sunny
Early-Evening
68°F 20°C
Overcast
Warm with partly sunny skies in the morning, mostly sunny in the afternoon, and partly sunny in the evening, steady humidity and steady pressure.
Wednesday, September 9, 2026
Mid-Morning
62°F 17°C
Scattered Showers
Mid-Afternoon
76°F 24°C
Overcast
Early-Evening
71°F 22°C
Partly Cloudy
Warm with overcast skies, lower humidity and barometric pressure falling.
Thursday, September 10, 2026
Mid-Morning
70°F 21°C
Scattered Showers
Mid-Afternoon
77°F 25°C
Scattered Showers
Early-Evening
74°F 24°C
Sunny
Warm with a mix of sun and clouds, steady humidity and steady pressure. Isolated showers.
Friday, September 11, 2026
Mid-Morning
71°F 22°C
Scattered Showers
Mid-Afternoon
80°F 27°C
Rain Showers
Early-Evening
77°F 25°C
Scattered Showers
Very warm with a mix of sun and clouds, steady humidity and steady pressure. Winds shifting from SSW to SW at 5 mph 8 km/h.
Saturday, September 12, 2026
Mid-Morning
74°F 23°C
Cloudy
Mid-Afternoon
75°F 24°C
Cloudy
Early-Evening
69°F 21°C
Overcast
Warm with mostly cloudy skies, lower humidity and barometric pressure rising. Winds shifting from WSW to E at 10 mph 15 km/h.
Sunday, September 13, 2026
Mid-Morning
61°F 16°C
Sunny
Mid-Afternoon
72°F 22°C
Partly Cloudy
Early-Evening
65°F 18°C
Partly Cloudy
Warm with partly sunny skies in the morning, mostly cloudy in the afternoon, and mostly sunny in the evening, steady humidity and steady pressure. Winds shifting from ENE to ESE at 8 mph 12 km/h.
Allentown, PA Weather Radar Map
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