Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
59°F
15°C
| Humidity | 81% |
| Wind Speed | Calm |
| Barometer | 29.95 in (1014.2 mb) |
| Dewpoint | 53°F (12°C) |
| Visibility | 10.00 mi |
| Last update | 17 May 4:56 am EDT |
Extended Forecast for
Nissequogue NY
Today
High: 87 °F
Sunny
Tonight
Low: 63 °F
Partly Cloudy
Monday
High: 81 °F
Mostly Sunny
Monday Night
Low: 64 °F
Mostly Clear
Tuesday
High: 85 °F
Sunny
Tuesday Night
Low: 68 °F
Partly Cloudy
Wednesday
High: 87 °F
Sunny then
Showers
LikelyWednesday Night
Low: 56 °F
Showers
LikelyThursday
High: 74 °F
Partly Sunny
Detailed Forecast
Today
Sunny, with a high near 87. West wind 6 to 11 mph.
Tonight
Partly cloudy, with a low around 63. Southwest wind 5 to 8 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 81. East wind 6 to 9 mph.
Monday Night
Mostly clear, with a low around 64. South wind around 6 mph.
Tuesday
Sunny, with a high near 85. Southwest wind 7 to 14 mph.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Showers likely after 2pm. Sunny, then becoming mostly cloudy during the afternoon, with a high near 87. Chance of precipitation is 70%.
Wednesday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Thursday
Partly sunny, with a high near 74.
Thursday Night
Mostly cloudy, with a low around 55.
Friday
Partly sunny, with a high near 69.
Friday Night
Mostly cloudy, with a low around 53.
Saturday
A 40 percent chance of showers. Mostly cloudy, with a high near 70.
Additional Forecasts and Information
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Point Forecast:
Nissequogue NY
40.9°N 73.18°W (Elev. 7 ft)
40.9°N 73.18°W (Elev. 7 ft)
5:34 am EDT May 17, 2026
5am EDT May 17, 2026-6pm EDT May 23, 2026
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