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Hourly Forecast
Daylight Hours
05:33
Sunrise
20:20
Sunset
Moon
Waning Crescent
32% illuminated
00:44
Moonrise
15:34
Moonset
Daily Forecast
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Friday
Saturday
Sunday
Monday
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Wednesday
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UV Index
Humidity
Frequently asked questions about weather in Port Jefferson
How warm does it get in Port Jefferson?
The warmest month in Port Jefferson is July, with average high temperatures of 27°C. The average temperature during this period is around 24°C.
How cold does it get in Port Jefferson?
The coldest month in Port Jefferson is January, with average low temperatures of 0°C. The average temperature during this period is around 2°C.
What is the wettest time of year in Port Jefferson?
The wettest month in Port Jefferson is December, with an average of 139mm of precipitation.
What is the driest time of year in Port Jefferson?
The driest month in Port Jefferson is June, with an average of 82mm of precipitation.
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