Port Jefferson Harbor Entrance Weather Forecast
- 69
- 78
Chance Rain Showers
- 68
- 83
Chance Rain Showers
- 66
- 80
Mostly Sunny
- 69
- 80
Mostly Cloudy
- 72
- 82
Partly Sunny
- 73
- 84
Slight Chance Thunderstorms
Today 2 Jul Northwest Suffolk
Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms in the Morning, then a slight chance of Showers and Thunderstorms in the afternoon. Some Thunderstorms may produce gusty Winds and heavy rainfall. Humid with Highs in the lower 80s. Southwest Winds around 5 Mph. Chance of rain 50 percent.
Tonight 2 Jul Northwest Suffolk
Mostly cloudy with a 50 percent chance of Showers. Near steady temperature in the lower 70s. Southwest Winds around 5 Mph.
Port Jefferson Harbor Entrance Temperature Statistics
July Temperature
Islip, Long Island Mac Arthur Airport (11.8 miles)
Lowest
–Average July
–Highest
–
Climate (2020–Present)
Islip, Long Island Mac Arthur Airport (11.8 miles)
Average Low 2020–2025
47.5 °FAverage 2020–2025
55.2 °FAverage High 2020–2025
63 °F