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      Elev 115 ft, 40.944 °N 73.059 °W

      Port Jefferson, NY

      Port Jefferson Station64°
      Updated: 2:13 AM EDT on October 3, 2026 (GMT -4)
      5 minutes ago
      83°
      65°
      64
      Feels Like 64
      Showers in Vicinity
      N
      12
      Gusts 22 mph
      Lower temperature is expected today
      Wundermap
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Tonight
        Fri 10/02
        Low 61°f
         75% Precip. / 0.02 in
        Occasional light rain. Low 61F. Winds N at 10 to 15 mph. Chance of rain 80%.
        Tomorrow
        Sat 10/03
        High 69°f
         3% Precip. / 0 in
        Partly cloudy skies. High 69F. Winds NE at 10 to 20 mph.
        Tomorrow night
        Sat 10/03
        Low 56°f
         6% Precip. / 0 in
        Clear skies. Low 56F. Winds E at 10 to 15 mph.
        Hourly Forecast
        Now
        65°
        3AM
        64°
        4AM
        40%
        64°
        5AM
        63°
        6AM
        63°
        6:50AM
        Sunrise
        7AM
        62°
        8AM
        62°
        9AM
        63°
        10AM
        64°
        11AM
        65°
        12PM
        66°
        1PM
        67°
        2PM
        68°
        3PM
        68°
        4PM
        68°
        5PM
        68°
        6PM
        66°
        6:30PM
        Sunset
        7PM
        64°
        8PM
        62°
        9PM
        61°
        10PM
        60°
        11PM
        59°
        12AM
        58°
        1AM
        58°
        2AM
        57°
        Precipitation
        40%
        Rain likely to end around 4:15 AM
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        31
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 30.05 in
        2. Visibility 10 miles
        3. Clouds Cloudy
        4. Dew Point54°F
        5. Humidity 67%
        6. Rainfall 0.04 in
        7. Snow Depth 0 in
         KISP Station History
        Almanac for October 3, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 69°F 69°F 83°F 2002
        4. Low 57°F 53°F 39°F 1975
        5. Rain/Snow Depth
        6. Precipitation 0 in - in -
        7. Snow 0 in - in -
        Almanac for October 4, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 64°F 68°F 84°F
        4. Low 56°F 53°F 36°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:51 AM 6:30 PM
        3. Civil Twilight 6:23 AM 6:58 PM
        4. Nautical Twilight 5:51 AM 7:29PM
        5. Astronomical Twilight 5:19 AM 8:01 PM
        1. Length of Visible Light 12h 34m
        2. Length of Day 11h 39m
        3. Tomorrow will be 2 minutes 41 seconds shorter
        1. Moon 11:47 PM 2:43 PM
        2. Last Quarter43% of the Moon is Illuminated
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Oct 26
        Full Moon
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