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      Elev 121 ft, 40.814 °N 73.111 °W

      Lake Ronkonkoma, NY

      Updated: 1:44 AM EDT on September 12, 2026 (GMT -4)
      2 minutes ago
      78°
      61°
      61
      Feels Like 61
      Clear
      N
      1
      Same temperature is expected today
      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 09/11
        Low 59°f
        2% Precip. / 0 in
        Clear skies. Low 59F. Winds light and variable.
        Tomorrow
        Sat 09/12
        High 77°f
        2% Precip. / 0 in
        Partly cloudy. High 77F. Winds SE at 10 to 15 mph.
        Tomorrow night
        Sat 09/12
        Low 68°f
        76% Precip. / 0.19 in
        Partly cloudy in the evening then becoming cloudy with periods of rain after midnight. Low 68F. Winds SSE at 5 to 10 mph. Chance of rain 80%. Locally heavy rainfall possible.
        Hourly Forecast
        Now
        61°
        2AM
        62°
        3AM
        61°
        4AM
        61°
        5AM
        61°
        6AM
        60°
        6:29AM
        Sunrise
        7AM
        61°
        8AM
        66°
        9AM
        69°
        10AM
        72°
        11AM
        74°
        12PM
        75°
        1PM
        75°
        2PM
        75°
        3PM
        75°
        4PM
        75°
        5PM
        74°
        6PM
        73°
        7PM
        71°
        7:06PM
        Sunset
        8PM
        70°
        9PM
        69°
        10PM
        69°
        11PM
        69°
        12AM
        69°
        1AM
        70°
        Additional Conditions
        1. Pressure 30.06 in
        2. Visibility 10 miles
        3. Clouds Clear
        4. Dew Point59°F
        5. Humidity 93%
        6. Rainfall 0 in
        7. Snow Depth 0 in
        KISP Station History
        Almanac for September 12, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 78°F 76°F 90°F 2005
        4. Low 61°F 60°F 45°F 1993
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.3 in -
        7. Snow 0 in 0 in -
        Almanac for September 13, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 76°F 76°F 89°F
        4. Low 61°F 60°F 48°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:30 AM 7:06 PM
        3. Civil Twilight 6:02 AM 7:33 PM
        4. Nautical Twilight 5:29 AM 8:06PM
        5. Astronomical Twilight 4:56 AM 8:40 PM
        1. Length of Visible Light 13h 31m
        2. Length of Day 12h 36m
        3. Tomorrow will be 2 minutes 40 seconds shorter
        1. Moon 8:06 AM 7:36 PM
        2. Waxing Crescent2% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
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