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      Small Craft Advisory
      until 6:00 AM EDT
      Elev 12 ft, 40.954 °N 73.101 °W

      Setauket, NY

      Setauket-East Setauket Station
      Updated: 11:18 PM EDT on August 20, 2026 (GMT -4)
      11 minutes ago
      85°
      63°
      67
      Feels Like 67
      Rain
      N
      14
      Gusts 23 mph
      Lower temperature is expected tomorrow
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
      Tonight
      Thu 08/20
      Low 63°f
      100% Precip. / 0.2 in
      A steady rain this evening. Showers continuing overnight. Low 63F. Winds NE at 10 to 20 mph. Chance of rain 100%. Rainfall around a quarter of an inch. Localized flooding is possible.
      Tomorrow
      Fri 08/21
      High 75°f
      24% Precip. / 0 in
      Mostly cloudy. High around 75F. Winds NNE at 10 to 20 mph.
      Tomorrow night
      Fri 08/21
      Low 65°f
      23% Precip. / 0 in
      Partly cloudy skies during the evening will give way to cloudy skies overnight. Low around 65F. Winds NE at 10 to 15 mph.
      Hourly Forecast
      Now
      65°
      12AM
      97%
      66°
      1AM
      57%
      66°
      2AM
      34%
      65°
      3AM
      40%
      67°
      4AM
      31%
      67°
      5AM
      67°
      6AM
      67°
      6:08AM
      Sunrise
      7AM
      66°
      8AM
      68°
      9AM
      69°
      10AM
      71°
      11AM
      72°
      12PM
      73°
      1PM
      74°
      2PM
      74°
      3PM
      74°
      4PM
      75°
      5PM
      75°
      6PM
      75°
      7PM
      74°
      7:42PM
      Sunset
      8PM
      73°
      9PM
      72°
      10PM
      71°
      11PM
      70°
      Precipitation
      97%
      Rain continuing through 4 AM
      Pollen
      Grass Pollen
      Low
      Air Quality
      56
      Moderate
      UV Index
      0
      Low
      Additional Conditions
      1. Pressure 29.95 in
      2. Visibility 3 miles
      3. Clouds Cloudy
      4. Dew Point64°F
      5. Humidity 98%
      6. Rainfall 1.84 in
      7. Snow Depth 0 in
       KISP Station History
      Almanac for August 21, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 85°F 82°F 95°F 1995
      4. Low 63°F 65°F 50°F 1995
      5. Rain/Snow Depth
      6. Precipitation 0.2 in - in -
      7. Snow 0 in - in -
      Almanac for August 22, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 75°F 82°F 94°F
      4. Low 63°F 65°F 52°F
      Astronomy
      1. Sun Rise Set
      2. Actual Time 6:08 AM 7:41 PM
      3. Civil Twilight 5:39 AM 8:10 PM
      4. Nautical Twilight 5:04 AM 8:45PM
      5. Astronomical Twilight 4:27 AM 9:22 PM
      1. Length of Visible Light 14h 31m
      2. Length of Day 13h 33m
      3. Tomorrow will be 2 minutes 29 seconds shorter
      1. Moon 3:45 PM -
      2. Waxing Gibbous66% of the Moon is Illuminated
      Aug 28
      Full Moon
      Sep 4
      Waning Half Last Qtr
      Sep 10
      New Moon
      Sep 18
      Waxing Half First Qtr
      Precipitation
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