Weather in Port Jefferson, New York, United States
7-Day Forecast Summary
7-Day Detailed Weather Forecast for Port Jefferson
Tonight |
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Temperature: 62°F Wind Speed: 3 to 12 mph Wind Direction: S Forecast: Partly cloudy, with a low around 62. South wind 3 to 12 mph. |
Wednesday |
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Temperature: 76°F Wind Speed: 3 to 10 mph Wind Direction: SE Forecast: Mostly sunny, with a high near 76. Southeast wind 3 to 10 mph. |
Wednesday Night |
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Temperature: 63°F Wind Speed: 7 to 10 mph Wind Direction: S Forecast: A slight chance of rain showers after 2am. Mostly cloudy, with a low around 63. South wind 7 to 10 mph. Chance of precipitation is 20%. |
Thursday |
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Temperature: 81°F Wind Speed: 10 to 20 mph Wind Direction: S Forecast: A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 81. South wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible. |
Thursday Night |
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Temperature: 68°F Wind Speed: 14 to 18 mph Wind Direction: SW Forecast: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68. Southwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible. |
Juneteenth |
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Temperature: 83°F Wind Speed: 15 mph Wind Direction: W Forecast: Mostly sunny. High near 83, with temperatures falling to around 81 in the afternoon. |
Friday Night |
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Temperature: 65°F Wind Speed: 10 to 15 mph Wind Direction: W Forecast: Partly cloudy, with a low around 65. |
Saturday |
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Temperature: 80°F Wind Speed: 17 mph Wind Direction: W Forecast: Sunny, with a high near 80. |
Saturday Night |
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Temperature: 65°F Wind Speed: 12 to 15 mph Wind Direction: NW Forecast: Mostly clear, with a low around 65. |
Sunday |
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Temperature: 80°F Wind Speed: 13 mph Wind Direction: W Forecast: Sunny, with a high near 80. |
Sunday Night |
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Temperature: 65°F Wind Speed: 3 to 10 mph Wind Direction: NW Forecast: A slight chance of rain showers after 2am. Partly cloudy, with a low around 65. |
Monday |
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Temperature: 75°F Wind Speed: 5 to 8 mph Wind Direction: NE Forecast: A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 75. Chance of precipitation is 50%. |
Monday Night |
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Temperature: 65°F Wind Speed: 9 mph Wind Direction: NE Forecast: A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 50%. |
Tuesday |
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Temperature: 77°F Wind Speed: 8 mph Wind Direction: NW Forecast: A chance of rain showers. Mostly sunny, with a high near 77. |