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: 40°F Wind Speed: 10 mph Wind Direction: E Forecast: Cloudy. High near 40, with temperatures falling to around 38 in the afternoon. East wind around 10 mph. |
Tonight |
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Temperature: 38°F Wind Speed: 9 mph Wind Direction: E Forecast: Rain after 1am. Cloudy. Low around 38, with temperatures rising to around 40 overnight. East wind around 9 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible. |
Monday |
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Temperature: 48°F Wind Speed: 8 to 13 mph Wind Direction: SE Forecast: Rain before 1pm, then a chance of rain and patchy fog. Cloudy. High near 48, with temperatures falling to around 46 in the afternoon. Southeast wind 8 to 13 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible. |
Monday Night |
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Temperature: 47°F Wind Speed: 13 to 21 mph Wind Direction: S Forecast: Rain and patchy fog. Cloudy. Low around 47, with temperatures rising to around 52 overnight. South wind 13 to 21 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible. |
Tuesday |
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Temperature: 57°F Wind Speed: 15 to 21 mph Wind Direction: SW Forecast: Rain before 1pm. Mostly sunny. High near 57, with temperatures falling to around 52 in the afternoon. Southwest wind 15 to 21 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible. |
Tuesday Night |
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Temperature: 41°F Wind Speed: 7 to 14 mph Wind Direction: W Forecast: Mostly clear, with a low around 41. |
Wednesday |
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Temperature: 51°F Wind Speed: 6 to 10 mph Wind Direction: SW Forecast: A chance of rain after 1pm. Partly sunny, with a high near 51. Chance of precipitation is 40%. |
Wednesday Night |
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Temperature: 41°F Wind Speed: 10 to 17 mph Wind Direction: SW Forecast: Rain. Mostly cloudy, with a low around 41. Chance of precipitation is 80%. |
Thursday |
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Temperature: 45°F Wind Speed: 18 mph Wind Direction: NW Forecast: Rain likely before 7am, then a chance of rain showers. Partly sunny, with a high near 45. Chance of precipitation is 70%. |
Thursday Night |
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Temperature: 30°F Wind Speed: 13 to 17 mph Wind Direction: N Forecast: A slight chance of rain showers before 7pm. Partly cloudy, with a low around 30. |
Friday |
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Temperature: 39°F Wind Speed: 10 to 14 mph Wind Direction: NE Forecast: A slight chance of rain after 1pm. Partly sunny, with a high near 39. |
Friday Night |
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Temperature: 33°F Wind Speed: 5 to 17 mph Wind Direction: NE Forecast: A chance of rain before 1am, then a chance of snow. Mostly cloudy, with a low around 33. Chance of precipitation is 40%. |
Saturday |
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Temperature: 38°F Wind Speed: 16 to 20 mph Wind Direction: NW Forecast: A chance of snow before 7am, then a chance of rain and snow. Partly sunny, with a high near 38. Chance of precipitation is 40%. |
Saturday Night |
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Temperature: 26°F Wind Speed: 22 mph Wind Direction: NW Forecast: A chance of rain before 7pm, then a slight chance of snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%. |