Weather forecast for todayPort Jefferson, NY

Weather forecast for today

Current condition 4:07 pm EDT

  • 50°F
  • Feels like:
    45°F
Fair
Fair
  • Precipitation: 0"
  • Wind: 17mphNNW 340°
  • Humidity: 47%
  • Dewpoint: 30°F
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
In Port Jefferson, at the moment, warm breezes complement the overall fair weather outlook.
The temperature is a crisp 50°F, and the felt air temperature is appraised at a chilly 44.6°F.

Saturday Oct 17, 2026

  • min.
  • 41°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 19mphN 1°
  • Humidity: 55%
  • UV index: 0
  • Sunrise: 7:06 am EDT
  • Sunset: 6:09 pm EDT
  • ▼
In Port Jefferson, through the afternoon and beyond, a stunningly clear sky is on the horizon.
The lowest expected temperature is an icy 41°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: 5 pm - 6 pm 50°C.
Coldest hour: 12 am 45°C.

Chance of precipitation

Highest chance: 6 pm 2%.

Hourly weather forecast

  • 5 pm
  • 50°F
  • Feels like:
    45°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 17mphNNW 348°
  • Humidity: 46%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 pm
  • 50°F
  • Feels like:
    43°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 17mphN 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: 17mphN 352°
  • Humidity: 49%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 48°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphN 354°
  • Humidity: 51%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 48°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 19mphN 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: 17mphN 0°
  • 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: 16mphN 358°
  • Humidity: 53%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 12 am
  • 45°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 17mphN 4°
  • Humidity: 56%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 1 am
  • 45°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 16mphN 4°
  • Humidity: 58%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 43°F
  • Feels like:
    36°F
Clear
Clear
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 14mphN 11°
  • Humidity: 59%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
During the late afternoon and into the evening, primarily bright and sunny weather is anticipated.
The temperature will vary between the highest temperature of 50°F and the lowest temperature of 46.4°F. The feels-like temperature will vary between a maximum of 44.6°F and a minimum of 39.2°F.
Updated: Oct 17, 2026 @ 20:07:35 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The current temperature (4:07 pm EDT) is 50°F. Feels-like temperature is 44.6°F.

Today, bright and cloud-free conditions will make for a beautiful day.

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

Today, the daylight will last for 11h and 3min.