Weather forecast for todayPort Jefferson, NY

Weather forecast for today

Current condition 1:56 pm EDT

  • 52°F
  • Feels like:
    46°F
Partly Cloudy
Partly Cloudy
  • Precipitation: 0"
  • Wind: 18mphNNW 340°
  • Humidity: 53%
  • Dewpoint: 34°F
  • Pressure: 30.16"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
In Port Jefferson, currently, the sky features a blend of clouds and blue patches.
The temperature is a fresh 51.8°F, the real-feel reading is assessed at a brisk 46.4°F. The current temperature is at its highest of the day.

Saturday Oct 17, 2026

  • 52°F
  • 41°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 21mphNNW 348°
  • Humidity: 48%
  • UV index: 4
  • Sunrise: 7:06 am EDT
  • Sunset: 6:09 pm EDT
  • ▼
Today, in Port Jefferson, cool winds will move through a partly cloudy sky.
Temperatures are forecasted to range from a maximum of a cool 51.8°F to a minimum of an icy 41°F.
Today, it will be colder with a forecast high that reflects November's climate of 51.8°F.
Sunrise was at 7:06 am and sunset will be at 6:09 pm; the daylight will last for 11h and 3min.

Hourly overview

Hourly temperatures

Warmest period: 2 pm - 5 pm 52°C.
Coldest period: 9 pm - 11 pm 46°C.

Chance of precipitation

Highest chance: 2 pm - 11 pm 0%.

Hourly weather forecast

  • 2 pm
  • 52°F
  • Feels like:
    45°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 22mphNNW 347°
  • Humidity: 51%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 3 pm
  • 52°F
  • Feels like:
    45°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 21mphNNW 348°
  • Humidity: 48%
  • Pressure: 30.15"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 4 pm
  • 52°F
  • Feels like:
    45°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 21mphNNW 347°
  • Humidity: 46%
  • Pressure: 30.18"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 5 pm
  • 52°F
  • Feels like:
    45°F
Cloudy
Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 19mphNNW 349°
  • Humidity: 44%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 pm
  • 50°F
  • Feels like:
    45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 19mphN 349°
  • Humidity: 47%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:09 pm
  • 7 pm
  • 48°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 19mphN 353°
  • Humidity: 49%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 48°F
  • Feels like:
    41°F
Clear / Wind
Clear / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 20mphN 354°
  • Humidity: 51%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 46°F
  • Feels like:
    39°F
Clear / Wind
Clear / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 21mphN 357°
  • Humidity: 51%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 46°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 18mphN 359°
  • Humidity: 52%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 46°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphN 359°
  • Humidity: 54%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
For the rest of the day, cloudy skies are expected.
The temperature will vary between the lowest temperature of 46.4°F and the highest temperature of 51.8°F. The feels-like temperature will vary between the lowest temperature of 39.2°F and the highest temperature of 44.6°F. The warmest part of the day will be from 2 pm to 5 pm.
The maximum temperature today will be more consistent with November's average high of 51.8°F than October's usual of 62.6°F. Today, the overnight low is also more close to November's usual minimum of 44.1°F than October's 55.4°F.
Updated: Oct 17, 2026 @ 17:56:51 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (1:56 pm EDT) it is 51.8°F in Port Jefferson. Feels-like temperature is 46.4°F.

On Saturday, expect blustery conditions under a sky filled with passing clouds.

Today, the maximum temperature will be 51.8°F, while the minimum temperature will be 41°F.
The maximum temperature will be notably lower than the average highest temperature of 62.6°F in October. Today, the lowest temperature will be also notably lower than the average low of 55.4°F.

On Saturday, in Port Jefferson, sunrise was at 7:06 am and sunset will be at 6:09 pm (EDT).

In Port Jefferson, the length of the day today will be 11h and 3min.