I-78 weather conditions near Allentown, Pennsylvania
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Current Weather Conditions
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7 day weather forecast
Current condition: Fog/Mist 72°F 2025-08-14T07:51:00-04:00
Today 2025-08-14, Chance T-storms. A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight 2025-08-14, Chance T-storms and Patchy Fog then Patchy Fog. A chance of showers and thunderstorms, mainly before 7pm. Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 67. North wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday 2025-08-15, Sunny then Chance T-storms. A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Northeast wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night 2025-08-15, Chance T-storms then Slight Chance Showers. A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 67. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday 2025-08-16, Partly Sunny then Slight Chance Showers. A slight chance of showers after 2pm. Mostly sunny, with a high near 86. Calm wind becoming southeast around 5 mph. Chance of precipitation is 20%.
Saturday Night 2025-08-16, Mostly Clear. Mostly clear, with a low around 66.
Sunday 2025-08-17, Sunny then Chance T-storms. A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Sunday Night 2025-08-17, Chance T-storms then Partly Cloudy. A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Monday 2025-08-18, Mostly Sunny then Chance T-storms. A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Monday Night 2025-08-18, Chance T-storms then Partly Cloudy. A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Tuesday 2025-08-19, Mostly Sunny then Chance Showers. A chance of showers. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
Tuesday Night 2025-08-19, Chance Showers. A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 30%.
Wednesday 2025-08-20, Partly Sunny then Chance Showers. A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 40%.
Current condition: Fog/Mist 72°F 2025-08-14T07:51:00-04:00 
Today 2025-08-14, Chance T-storms. A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 87. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.Tonight 2025-08-14, Chance T-storms and Patchy Fog then Patchy Fog. A chance of showers and thunderstorms, mainly before 7pm. Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 67. North wind around 5 mph becoming calm. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday 2025-08-15, Sunny then Chance T-storms. A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Northeast wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night 2025-08-15, Chance T-storms then Slight Chance Showers. A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 67. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday 2025-08-16, Partly Sunny then Slight Chance Showers. A slight chance of showers after 2pm. Mostly sunny, with a high near 86. Calm wind becoming southeast around 5 mph. Chance of precipitation is 20%.
Saturday Night 2025-08-16, Mostly Clear. Mostly clear, with a low around 66.Sunday Night 2025-08-17, Chance T-storms then Partly Cloudy. A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Monday 2025-08-18, Mostly Sunny then Chance T-storms. A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Tuesday 2025-08-19, Mostly Sunny then Chance Showers. A chance of showers. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
Tuesday Night 2025-08-19, Chance Showers. A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 30%.Wednesday 2025-08-20, Partly Sunny then Chance Showers. A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 40%.