I-78 weather conditions near Summit, New Jersey
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Mostly Cloudy 86°F 2025-07-15T14:45:00-04:00 
This Afternoon 2025-07-15, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms. Mostly sunny, with a steady temperature around 85. Calm wind.Tonight 2025-07-15, Mostly Clear then Patchy Fog. Patchy fog before 3am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 72. Calm wind.
Wednesday 2025-07-16, Chance T-storms and Patchy Fog. A 30 percent chance of showers and thunderstorms, mainly after 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 90. Heat index values as high as 99. Calm wind becoming south around 6 mph in the afternoon.
Wednesday Night 2025-07-16, Chance T-storms. A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Southwest wind 3 to 5 mph.
Thursday 2025-07-17, Showers Likely. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 91. Southwest wind 6 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.Thursday Night 2025-07-17, Showers Likely then Partly Cloudy. Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 75. Chance of precipitation is 60%.
Friday 2025-07-18, Mostly Sunny. Mostly sunny, with a high near 88.
Friday Night 2025-07-18, Mostly Clear. Mostly clear, with a low around 66.- Saturday 2025-07-19, Mostly Sunny. Mostly sunny, with a high near 85.
Saturday Night 2025-07-19, Partly Cloudy then Chance Showers. A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 70.
Sunday 2025-07-20, Showers Likely. Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 85. Chance of precipitation is 60%.
Sunday Night 2025-07-20, Showers Likely. Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.- Monday 2025-07-21, Mostly Sunny. Mostly sunny, with a high near 84.
Monday Night 2025-07-21, Partly Cloudy. Partly cloudy, with a low around 66.- Tuesday 2025-07-22, Mostly Sunny. Mostly sunny, with a high near 83.