Weather in Port Jefferson, New York, United States
7-Day Forecast Summary
7-Day Detailed Weather Forecast for Port Jefferson
Overnight |
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Temperature: 32°F Wind Speed: 5 to 8 mph Wind Direction: SW Forecast: Mostly cloudy. Low around 32, with temperatures rising to around 34 overnight. Southwest wind 5 to 8 mph. |
Christmas Day |
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Temperature: 43°F Wind Speed: 10 to 21 mph Wind Direction: W Forecast: Partly sunny. High near 43, with temperatures falling to around 41 in the afternoon. West wind 10 to 21 mph. |
Thursday Night |
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Temperature: 22°F Wind Speed: 18 to 24 mph Wind Direction: NW Forecast: Mostly clear, with a low around 22. Wind chill values as low as 9. Northwest wind 18 to 24 mph. |
Friday |
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Temperature: 29°F Wind Speed: 6 to 18 mph Wind Direction: NE Forecast: A chance of snow after 1pm. Partly sunny, with a high near 29. Wind chill values as low as 8. Northeast wind 6 to 18 mph. Chance of precipitation is 30%. |
Friday Night |
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Temperature: 26°F Wind Speed: 6 to 17 mph Wind Direction: E Forecast: Snow. Cloudy. Low around 26, with temperatures rising to around 30 overnight. East wind 6 to 17 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible. |
Saturday |
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Temperature: 33°F Wind Speed: 9 to 17 mph Wind Direction: NE Forecast: Snow. Mostly cloudy. High near 33, with temperatures falling to around 31 in the afternoon. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible. |
Saturday Night |
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Temperature: 27°F Wind Speed: 7 to 10 mph Wind Direction: N Forecast: A slight chance of snow before 7pm. Mostly cloudy, with a low around 27. New snow accumulation of less than half an inch possible. |
Sunday |
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Temperature: 38°F Wind Speed: 8 mph Wind Direction: W Forecast: A chance of rain after 1pm. Mostly cloudy, with a high near 38. Chance of precipitation is 30%. |
Sunday Night |
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Temperature: 35°F Wind Speed: 8 to 14 mph Wind Direction: SW Forecast: Rain. Cloudy, with a low around 35. Chance of precipitation is 90%. |
Monday |
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Temperature: 46°F Wind Speed: 15 to 24 mph Wind Direction: SW Forecast: Rain. Cloudy, with a high near 46. Chance of precipitation is 90%. |
Monday Night |
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Temperature: 28°F Wind Speed: 25 to 31 mph Wind Direction: W Forecast: A chance of rain before 7pm. Partly cloudy, with a low around 28. Chance of precipitation is 50%. |
Tuesday |
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Temperature: 32°F Wind Speed: 24 to 29 mph Wind Direction: W Forecast: Mostly sunny, with a high near 32. |
Tuesday Night |
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Temperature: 27°F Wind Speed: 18 to 24 mph Wind Direction: W Forecast: Partly cloudy, with a low around 27. |
Wednesday |
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Temperature: 35°F Wind Speed: 18 mph Wind Direction: W Forecast: Mostly sunny, with a high near 35. |