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Port Jefferson, NY
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7-Day Forecast
Today
Mostly Sunny then Chance Showers
High: 78°
A 30% chance of showers after 4pm.
Mostly sunny with a high near 78.
West wind 14 to 18 mph
with gusts as high as 29 mph.
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Tonight
Slight Chance Showers then Mostly Cloudy
Low: 38°
A slight chance of showers
between 10pm and midnight.
Increasing clouds with a low around 38.
East wind 10 to 15 mph.
Chance of precipitation is 20%.
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Sunday
Patchy Fog then Cloudy
High: 49°
Patchy fog before 10am.
Otherwise, mostly cloudy with a high near 49.
East wind around 9 mph.
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Sunday Night
Showers Likely and Areas Fog
Low: 44°
Showers likely, mainly
between midnight and 2am.
Areas of fog before midnight.
Otherwise, cloudy with a low around 44.
East wind 5 to 7 mph becoming
south after midnight.
Chance of precipitation is 60%.
New precipitation amounts of less than a tenth of an inch possible.
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Monday
Showers Likely
High: 61°
A chance of showers,
then showers likely and possibly a thunderstorm after 2pm.
Cloudy with a high near 61.
South wind 10 to 14 mph.
Chance of precipitation is 60%.
New rainfall amounts
between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
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Monday Night
Showers and Areas Fog
Low: 45°
Showers.
Areas of fog before 2am.
Low around 45.
Chance of precipitation is 90%.
New precipitation amounts
between a half and three quarters of an inch possible.
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Tuesday
Mostly Sunny
High: 49°
Mostly sunny with a high near 49.
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Tuesday Night
Mostly Clear
Low: 34°
Mostly clear with a low around 34.
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Wednesday
Mostly Sunny
High: 45°
Mostly sunny with a high near 45.
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Wednesday Night
Mostly Cloudy then Chance Showers
Low: 40°
A 40% chance of showers after 2am.
Mostly cloudy with a low around 40.
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Thursday
Chance Showers
High: 56°
A 50% chance of showers.
Mostly cloudy with a high near 56.
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Thursday Night
Chance Showers
Low: 52°
A 40% chance of showers.
Mostly cloudy with a low around 52.
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Friday
Chance Showers
High: 60°
A 40% chance of showers.
Mostly cloudy with a high near 60.
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Source: National Weather Service
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