


Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
68°F
20°C
Humidity | 76% |
Wind Speed | E 9 mph |
Barometer | 30.09 in (1018.7 mb) |
Dewpoint | 60°F (16°C) |
Visibility | 10.00 mi |
Last update | 20 Aug 7:56 am EDT |
Extended Forecast for
Lake Ronkonkoma NY
Today
High: 74 °F
Chance
Showers then
Showers
LikelyTonight
Low: 63 °F
Showers
Thursday
High: 73 °F
Chance
Showers and
BreezyThursday Night
Low: 60 °F
Mostly Cloudy
and BreezyFriday
High: 81 °F
Sunny
Friday Night
Low: 63 °F
Mostly Clear
Saturday
High: 81 °F
Sunny
Saturday Night
Low: 66 °F
Mostly Clear
Sunday
High: 80 °F
Mostly Sunny
then Chance
Showers
Detailed Forecast
Today
Showers likely, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 74. East wind 9 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 63. East wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A 30 percent chance of showers, mainly before 8am. Mostly cloudy, with a high near 73. Breezy, with a northeast wind 17 to 21 mph, with gusts as high as 33 mph.
Thursday Night
Mostly cloudy, with a low around 60. Breezy, with a north wind 18 to 21 mph, with gusts as high as 32 mph.
Friday
Sunny, with a high near 81. North wind 11 to 18 mph, with gusts as high as 29 mph.
Friday Night
Mostly clear, with a low around 63.
Saturday
Sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 66.
Sunday
A 30 percent chance of showers after 2pm. Mostly sunny, with a high near 80.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Monday
Showers likely. Partly sunny, with a high near 82. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Sunny, with a high near 80.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Lake Ronkonkoma NY
40.83°N 73.14°W (Elev. 98 ft)
40.83°N 73.14°W (Elev. 98 ft)
2:48 am EDT Aug 20, 2025
8am EDT Aug 20, 2025-6pm EDT Aug 26, 2025