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Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
40°F
4°C
| Humidity | 86% |
| Wind Speed | Calm |
| Barometer | 30.52 in (1033.4 mb) |
| Dewpoint | 36°F (2°C) |
| Visibility | 10.00 mi |
| Last update | 19 Oct 12:56 am EDT |
Extended Forecast for
Lake Ronkonkoma NY
Overnight
Low: 42 °F
Clear
Monday
High: 61 °F
Sunny
Monday Night
Low: 47 °F
Mostly Cloudy
Tuesday
High: 64 °F
Mostly Cloudy
Tuesday Night
Low: 45 °F
Partly Cloudy
Wednesday
High: 59 °F
Mostly Sunny
Wednesday Night
Low: 43 °F
Partly Cloudy
Thursday
High: 64 °F
Sunny
Thursday Night
Low: 44 °F
Clear
Detailed Forecast
Overnight
Clear, with a low around 42. Calm wind.
Monday
Sunny, with a high near 61. Northeast wind 7 to 10 mph.
Monday Night
Mostly cloudy, with a low around 47. North wind 6 to 10 mph, with gusts as high as 21 mph.
Tuesday
Mostly cloudy, with a high near 64. North wind around 15 mph, with gusts as high as 26 mph.
Tuesday Night
Partly cloudy, with a low around 45. Northeast wind 10 to 15 mph, with gusts as high as 28 mph.
Wednesday
Mostly sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Sunny, with a high near 64.
Thursday Night
Clear, with a low around 44.
Friday
Sunny, with a high near 58.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 58.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Sunny, with a high near 62.
Additional Forecasts and Information
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Forecast AreaABOUT 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)
2:20 am EDT Oct 19, 2026
2am EDT Oct 19, 2026-6pm EDT Oct 25, 2026
Additional Resources
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