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: 69°F Wind Speed: 3 mph Wind Direction: N Forecast: Patchy fog after 4am. Mostly clear, with a low around 69. North wind around 3 mph. |
Monday |
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Temperature: 81°F Wind Speed: 2 to 6 mph Wind Direction: E Forecast: Patchy fog before 7am. Mostly sunny, with a high near 81. East wind 2 to 6 mph. |
Monday Night |
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Temperature: 71°F Wind Speed: 8 mph Wind Direction: S Forecast: A slight chance of showers and thunderstorms between 8pm and 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 71. South wind around 8 mph. Chance of precipitation is 30%. |
Tuesday |
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Temperature: 83°F Wind Speed: 8 to 17 mph Wind Direction: S Forecast: Showers and thunderstorms. Partly sunny, with a high near 83. South wind 8 to 17 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible. |
Tuesday Night |
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Temperature: 71°F Wind Speed: 8 to 16 mph Wind Direction: SW Forecast: Showers and thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 5am. Mostly cloudy, with a low around 71. Southwest wind 8 to 16 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible. |
Wednesday |
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Temperature: 81°F Wind Speed: 8 mph Wind Direction: W Forecast: Mostly sunny, with a high near 81. |
Wednesday Night |
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Temperature: 69°F Wind Speed: 3 to 8 mph Wind Direction: W Forecast: Mostly clear, with a low around 69. |
Thursday |
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Temperature: 83°F Wind Speed: 3 to 8 mph Wind Direction: W Forecast: Sunny, with a high near 83. |
Thursday Night |
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Temperature: 67°F Wind Speed: 8 mph Wind Direction: W Forecast: Partly cloudy, with a low around 67. |
Independence Day |
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Temperature: 79°F Wind Speed: 8 mph Wind Direction: NW Forecast: Sunny, with a high near 79. |
Friday Night |
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Temperature: 67°F Wind Speed: 5 to 8 mph Wind Direction: NW Forecast: Mostly clear, with a low around 67. |
Saturday |
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Temperature: 80°F Wind Speed: 5 to 8 mph Wind Direction: W Forecast: Mostly sunny, with a high near 80. |
Saturday Night |
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Temperature: 70°F Wind Speed: 10 mph Wind Direction: SW Forecast: Mostly cloudy, with a low around 70. |
Sunday |
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Temperature: 83°F Wind Speed: 8 to 12 mph Wind Direction: SW Forecast: A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. |