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City of Allentown, PAAllentown, PA 7-Day Weather Forecast
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Allentown Weather Forecast
Allentown, PA Weather Forecast Date: 449 PM EDT Tue Sep 01 2026
Weather forecast for Allentown, PA
Tonight Lo: 69°F Lo: 21°C |
Tonight... Mostly cloudy. Numerous showers and thunderstorms this evening. Some thunderstorms May be severe with damaging winds and heavy rainfall. Lows in the upper 60s. Northwest winds around 5 mph, becoming northeast after midnight. Chance of rain 60%. |
Wed Hi: 75°FHi: 24°C Lo: 69°F Lo: 21°C |
Wednesday... Mostly cloudy with a chance of showers. A slight chance of thunderstorms in the afternoon. Not as warm. Humid with highs in the mid 70s. East winds around 5 mph. Chance of rain 40%. |
Thu Hi: 85°FHi: 29°C Lo: 69°F Lo: 21°C |
Thursday... Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. Warmer with highs in the mid 80s. Southwest winds 5 to 10 mph. Chance of rain 50%. |
Fri Hi: 81°FHi: 27°C Lo: 60°F Lo: 16°C |
Friday... Mostly sunny. A chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 30%. |
Sat Hi: 79°FHi: 26°C Lo: 59°F Lo: 15°C |
Saturday... Sunny. Highs in the upper 70s. |
| Sun Hi: 75°FHi: 24°C Lo: 59°F Lo: 15°C |
Sunday... Sunny. Highs in the mid 70s. |
| Labor Day Hi: 79°FHi: 26°C Lo: 59°F Lo: 15°C |
Labor Day... Mostly sunny. Highs in the upper 70s. |
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