I-78 weather conditions near Allentown, Pennsylvania
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Overcast 64°F 2025-09-23T02:51:00-04:00 
Overnight 2025-09-23, Mostly Cloudy. Mostly cloudy, with a low around 60. Calm wind.Tuesday 2025-09-23, Partly Sunny then Chance T-storms. A chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 80. Light south wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night 2025-09-23, Heavy Rain. Showers and thunderstorms likely. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.Wednesday 2025-09-24, Mostly Cloudy then Chance Showers. A slight chance of showers before 8am, then a chance of showers after 2pm. Mostly cloudy, with a high near 79. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
- Wednesday Night 2025-09-24, Showers Likely. A chance of showers, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 64. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday 2025-09-25, Showers. Showers and possibly a thunderstorm. High near 75. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night 2025-09-25, Showers. Showers, mainly before 2am. Low around 64. Chance of precipitation is 80%.
Friday 2025-09-26, Chance Showers. A chance of showers. Mostly cloudy, with a high near 77. Chance of precipitation is 40%.
Friday Night 2025-09-26, Chance Showers. A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
Saturday 2025-09-27, Chance Showers. A chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 30%.
Saturday Night 2025-09-27, Partly Cloudy. Partly cloudy, with a low around 59.
Sunday 2025-09-28, Mostly Sunny. Mostly sunny, with a high near 77.- Sunday Night 2025-09-28, Partly Cloudy. Partly cloudy, with a low around 55.
Monday 2025-09-29, Sunny. Sunny, with a high near 75.