Port Jefferson Weather Forecast
- 28
- 41
Decreasing Clouds
- 37
- 41
Partly Sunny
- 43
- 48
Partly Sunny
- 46
- 52
Partly Sunny
- 44
- 59
Rain
- 38
- 48
Chance Rain Showers
Today 6 Dec Northwest Suffolk
Mostly cloudy with a slight chance of rain and snow Showers in the Morning, then partly sunny in the afternoon. Highs around 40. North Winds 10 to 15 Mph. Chance of precipitation 20 percent.
Tonight 6 Dec Northwest Suffolk
Partly cloudy in the Evening, then clearing. Lows in the mid 20s. Northwest Winds 10 to 15 Mph.
Port Jefferson Temperature Statistics
December Temperature
Islip, Long Island Mac Arthur Airport (10.6 miles)
Lowest 1 December, 2023
39.9 °FAverage December
47.6 °FHighest 2 December, 2023
53.1 °F
Climate (2018–Present)
Islip, Long Island Mac Arthur Airport (10.6 miles)
Average Low 2018–2023
47.3 °FAverage 2018–2023
55 °FAverage High 2018–2023
62.5 °F