I-78 weather conditions near Allentown, Pennsylvania
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Current Weather Conditions
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7 day weather forecast
Current condition: Overcast 69°F 2025-06-18T04:51:00-04:00
Overnight 2025-06-18, Chance Showers and Patchy Fog. Patchy drizzle and fog with a chance of showers. Cloudy, with a low around 67. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday 2025-06-18, Patchy Showers and Patchy Fog then T-storms. Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. Patchy fog before noon. High near 83. South wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night 2025-06-18, Chance T-storms and Patchy Fog then Patchy Fog. A chance of showers and thunderstorms, mainly before 8pm. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 70. Southwest wind 5 to 10 mph becoming light after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Juneteenth 2025-06-19, Slight Chance Showers then Severe Thunderstorms. A slight chance of showers, then showers and thunderstorms after 2pm. Some of the storms could be severe. High near 88. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night 2025-06-19, Severe Thunderstorms then Slight Chance Showers. Showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Some of the storms could be severe. Low around 62. West wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday 2025-06-20, Sunny. Sunny, with a high near 82.
Friday Night 2025-06-20, Partly Cloudy. Partly cloudy, with a low around 62.
Saturday 2025-06-21, Sunny. Sunny, with a high near 85.
Saturday Night 2025-06-21, Partly Cloudy. Partly cloudy, with a low around 67.
Sunday 2025-06-22, Mostly Sunny. Mostly sunny, with a high near 90.
Sunday Night 2025-06-22, Mostly Clear. Mostly clear, with a low around 72.
Monday 2025-06-23, Sunny. Sunny, with a high near 94.
Monday Night 2025-06-23, Mostly Clear. Mostly clear, with a low around 74.
Tuesday 2025-06-24, Sunny. Sunny, with a high near 95.
Current condition: Overcast 69°F 2025-06-18T04:51:00-04:00 
Overnight 2025-06-18, Chance Showers and Patchy Fog. Patchy drizzle and fog with a chance of showers. Cloudy, with a low around 67. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.Wednesday 2025-06-18, Patchy Showers and Patchy Fog then T-storms. Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. Patchy fog before noon. High near 83. South wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night 2025-06-18, Chance T-storms and Patchy Fog then Patchy Fog. A chance of showers and thunderstorms, mainly before 8pm. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 70. Southwest wind 5 to 10 mph becoming light after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Juneteenth 2025-06-19, Slight Chance Showers then Severe Thunderstorms. A slight chance of showers, then showers and thunderstorms after 2pm. Some of the storms could be severe. High near 88. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night 2025-06-19, Severe Thunderstorms then Slight Chance Showers. Showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Some of the storms could be severe. Low around 62. West wind 5 to 10 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday 2025-06-20, Sunny. Sunny, with a high near 82.
Friday Night 2025-06-20, Partly Cloudy. Partly cloudy, with a low around 62.
Sunday 2025-06-22, Mostly Sunny. Mostly sunny, with a high near 90.
Sunday Night 2025-06-22, Mostly Clear. Mostly clear, with a low around 72.