Port Jefferson Harbor Entrance Weather Forecast
- 66
- 81
Mostly Sunny
- 68
- 82
Mostly Sunny
- 71
- 82
Slight Chance Thunderstorms
- 72
- 79
Slight Chance Thunderstorms
- 73
- 80
Chance Thunderstorms
- 74
- 81
Chance Rain Showers
- 75
- 83
Slight Chance Thunderstorms
Today 26 Jul Northwest Suffolk
Sunny. Highs in the mid 80s. Northwest Winds 10 to 15 Mph.
Tonight 26 Jul Northwest Suffolk
Partly cloudy this Evening, then becoming mostly clear. Lows in the mid 60s. Northwest Winds 5 to 10 Mph.
Port Jefferson Harbor Entrance Temperature Statistics
July Temperature
Islip, Long Island Mac Arthur Airport (11.8 miles)
Lowest 1 July, 2024
61.6 °FAverage July
77.2 °FHighest 16 July, 2024
93.7 °F
Climate (2019–Present)
Islip, Long Island Mac Arthur Airport (11.8 miles)
Average Low 2019–2024
47.4 °FAverage 2019–2024
55 °FAverage High 2019–2024
62.6 °F