


Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Partly Cloudy
75°F
24°C
Humidity | 84% |
Wind Speed | SW 7 mph |
Barometer | 29.97 in (1014.8 mb) |
Dewpoint | 70°F (21°C) |
Visibility | 10.00 mi |
Last update | 17 Aug 6:56 am EDT |
Extended Forecast for
Ronkonkoma NY
Today
High: 88 °F
Mostly Sunny
Tonight
Low: 67 °F
Chance
ShowersMonday
High: 75 °F
Slight Chance
ShowersMonday Night
Low: 63 °F
Mostly Cloudy
Tuesday
High: 77 °F
Mostly Sunny
Tuesday Night
Low: 65 °F
Mostly Cloudy
then Chance
ShowersWednesday
High: 79 °F
Chance
ShowersWednesday Night
Low: 66 °F
Chance
ShowersThursday
High: 81 °F
Mostly Sunny
Detailed Forecast
Today
Mostly sunny, with a high near 88. South wind 6 to 13 mph.
Tonight
A chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers. Mostly cloudy, with a low around 67. Southwest wind 6 to 14 mph becoming north after midnight. Chance of precipitation is 40%.
Monday
A 20 percent chance of showers before 2pm. Mostly cloudy, with a high near 75. Northeast wind 14 to 17 mph.
Monday Night
Mostly cloudy, with a low around 63. East wind 6 to 9 mph.
Tuesday
Mostly sunny, with a high near 77. East wind 9 to 13 mph.
Tuesday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 65.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 79.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
Partly cloudy, with a low around 65.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 67.
Saturday
Sunny, with a high near 83.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Ronkonkoma NY
40.81°N 73.11°W (Elev. 98 ft)
40.81°N 73.11°W (Elev. 98 ft)
2:49 am EDT Aug 17, 2025
7am EDT Aug 17, 2025-6pm EDT Aug 23, 2025