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: Fair 46°F 2025-10-17T00:51:00-04:00 
Overnight 2025-10-17, Clear. Clear, with a low around 36. Northwest wind around 5 mph.
Friday 2025-10-17, Sunny. Sunny, with a high near 62. North wind 5 to 10 mph.
Friday Night 2025-10-17, Mostly Clear. Mostly clear, with a low around 39. Northwest wind around 5 mph becoming calm in the evening.
Saturday 2025-10-18, Mostly Sunny. Mostly sunny, with a high near 65. Calm wind becoming southwest around 5 mph in the afternoon.- Saturday Night 2025-10-18, Partly Cloudy. Partly cloudy, with a low around 46. Calm wind becoming south around 5 mph.
Sunday 2025-10-19, Partly Sunny then Chance Showers. A chance of showers after 2pm. Partly sunny, with a high near 73. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night 2025-10-19, Showers. Showers, mainly after 8pm. Low around 49. Chance of precipitation is 80%.Monday 2025-10-20, Showers Likely then Chance Showers. Showers likely, mainly before 8am. Partly sunny, with a high near 63. Chance of precipitation is 60%.
- Monday Night 2025-10-20, Partly Cloudy. Partly cloudy, with a low around 42.
- Tuesday 2025-10-21, Mostly Sunny. Mostly sunny, with a high near 67.
Tuesday Night 2025-10-21, Chance Showers. A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.- Wednesday 2025-10-22, Mostly Sunny. Mostly sunny, with a high near 61.
- Wednesday Night 2025-10-22, Partly Cloudy. Partly cloudy, with a low around 41.
- Thursday 2025-10-23, Mostly Sunny. Mostly sunny, with a high near 59.