Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
57°F
14°C
| Humidity | 39% |
| Wind Speed | NW 16 G 24 mph |
| Barometer | 30.11 in (1019.5 mb) |
| Dewpoint | 32°F (0°C) |
| Visibility | 10.00 mi |
| Last update | 6 Oct 12:56 pm EDT |
Extended Forecast for
Lake Ronkonkoma NY
This Afternoon
High: 63 °F
Sunny
Tonight
Low: 41 °F
Mostly Clear
Wednesday
High: 66 °F
Sunny
Wednesday Night
Low: 57 °F
Mostly Clear
Thursday
High: 72 °F
Sunny
Thursday Night
Low: 56 °F
Mostly Clear
Friday
High: 68 °F
Sunny
Friday Night
Low: 53 °F
Mostly Clear
Saturday
High: 67 °F
Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 63. Northwest wind around 14 mph.
Tonight
Mostly clear, with a low around 41. Northwest wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 66. Light south wind becoming southwest 6 to 11 mph in the morning.
Wednesday Night
Mostly clear, with a low around 57. Southwest wind 8 to 10 mph.
Thursday
Sunny, with a high near 72. Southwest wind 8 to 10 mph.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 68.
Friday Night
Mostly clear, with a low around 53.
Saturday
Sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 67.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 57.
Columbus Day
A 40 percent chance of showers. Mostly cloudy, with a high near 68.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Lake Ronkonkoma NY
40.83°N 73.11°W (Elev. 98 ft)
40.83°N 73.11°W (Elev. 98 ft)
3:07 am EDT Oct 6, 2026
1pm EDT Oct 6, 2026-6pm EDT Oct 12, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
