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 66°F 2025-08-12T01:51:00-04:00 
Overnight 2025-08-12, Patchy Fog. Patchy fog after 5am. Otherwise, mostly clear, with a low around 65. Calm wind.Tuesday 2025-08-12, Areas Fog then Sunny. Areas of fog before 8am. Otherwise, mostly sunny, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon.
- Tuesday Night 2025-08-12, Partly Cloudy. Partly cloudy, with a low around 71. Calm wind.
Wednesday 2025-08-13, Chance Showers then Showers Likely. A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 90. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night 2025-08-13, Showers Likely then Chance Showers. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday 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 90. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.Thursday Night 2025-08-14, Chance T-storms then Mostly Clear. A chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 66. Chance of precipitation is 30%.
Friday 2025-08-15, Sunny. Sunny, with a high near 89.
Friday Night 2025-08-15, Mostly Clear. Mostly clear, with a low around 66.- Saturday 2025-08-16, Sunny. Sunny, with a high near 92.
- Saturday Night 2025-08-16, Mostly Clear. Mostly clear, with a low around 69.
- Sunday 2025-08-17, Sunny. Sunny, with a high near 94.
- Sunday Night 2025-08-17, Partly Cloudy. Partly cloudy, with a low around 70.
Monday 2025-08-18, Mostly Sunny then Chance Showers. A chance of showers. Mostly sunny, with a high near 89. Chance of precipitation is 30%.