Weather in Port Jefferson, New York, United States
7-Day Forecast Summary
7-Day Detailed Weather Forecast for Port Jefferson
This Afternoon |
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Temperature: 75°F Wind Speed: 13 mph Wind Direction: S Forecast: Partly sunny. High near 75, with temperatures falling to around 73 in the afternoon. South wind around 13 mph. |
Tonight |
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Temperature: 69°F Wind Speed: 14 mph Wind Direction: S Forecast: A slight chance of rain showers between 2am and 5am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 69. South wind around 14 mph. Chance of precipitation is 30%. |
Friday |
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Temperature: 76°F Wind Speed: 12 mph Wind Direction: SW Forecast: A chance of showers and thunderstorms before 11am, then a chance of showers and thunderstorms. Partly sunny. High near 76, with temperatures falling to around 73 in the afternoon. Southwest wind around 12 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible. |
Friday Night |
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Temperature: 60°F Wind Speed: 8 to 12 mph Wind Direction: NW Forecast: A slight chance of rain showers before 8pm. Partly cloudy. Low around 60, with temperatures rising to around 62 overnight. Northwest wind 8 to 12 mph. Chance of precipitation is 20%. |
Saturday |
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Temperature: 73°F Wind Speed: 6 to 10 mph Wind Direction: NW Forecast: Sunny, with a high near 73. Northwest wind 6 to 10 mph. |
Saturday Night |
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Temperature: 62°F Wind Speed: 7 mph Wind Direction: NW Forecast: Mostly clear, with a low around 62. |
Sunday |
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Temperature: 75°F Wind Speed: 3 to 7 mph Wind Direction: NW Forecast: Sunny, with a high near 75. |
Sunday Night |
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Temperature: 59°F Wind Speed: 6 mph Wind Direction: W Forecast: Mostly clear, with a low around 59. |
Labor Day |
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Temperature: 74°F Wind Speed: 7 mph Wind Direction: NE Forecast: Sunny, with a high near 74. |
Monday Night |
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Temperature: 62°F Wind Speed: 6 mph Wind Direction: E Forecast: Partly cloudy, with a low around 62. |
Tuesday |
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Temperature: 75°F Wind Speed: 7 mph Wind Direction: E Forecast: Sunny, with a high near 75. |
Tuesday Night |
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Temperature: 61°F Wind Speed: 6 to 9 mph Wind Direction: SE Forecast: Mostly clear, with a low around 61. |
Wednesday |
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Temperature: 76°F Wind Speed: 6 to 10 mph Wind Direction: E Forecast: Sunny, with a high near 76. |
Wednesday Night |
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Temperature: 65°F Wind Speed: 10 mph Wind Direction: SE Forecast: Partly cloudy, with a low around 65. |