Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Fair
48°F
9°C
| Humidity | 71% |
| Wind Speed | W 7 mph |
| Barometer | 29.91 in (1012.6 mb) |
| Dewpoint | 39°F (4°C) |
| Visibility | 10.00 mi |
| Wind Chill | 45°F (7°C) |
| Last update | 11 Nov 12:56 am EST |
Extended Forecast for
Great River NY
Overnight
Low: 47 °F
Mostly Clear
Veterans Day
High: 61 °F
Mostly Sunny
Wednesday Night
Low: 49 °F
Increasing
CloudsThursday
High: 60 °F
Rain Likely
Thursday Night
Low: 43 °F
Rain
Friday
High: 50 °F
Rain
Friday Night
Low: 37 °F
Chance Rain
Saturday
High: 48 °F
Partly Sunny
Saturday Night
Low: 37 °F
Partly Cloudy
Detailed Forecast
Overnight
Mostly clear, with a low around 47. West wind around 8 mph.
Veterans Day
Mostly sunny, with a high near 61. Southwest wind around 7 mph.
Wednesday Night
Increasing clouds, with a low around 49. Light and variable wind becoming east 5 to 8 mph in the evening.
Thursday
A chance of rain and thunderstorms before 1pm, then rain likely and possibly a thunderstorm between 1pm and 4pm, then rain likely after 4pm. Mostly cloudy, with a high near 60. East wind 11 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.
Thursday Night
Rain. Low around 43. North wind 10 to 14 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 50. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 37.
Saturday
Partly sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Sunny, with a high near 51.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Great River NY
40.72°N 73.16°W (Elev. 13 ft)
40.72°N 73.16°W (Elev. 13 ft)
1:20 am EST Nov 11, 2026
1am EST Nov 11, 2026-6pm EST Nov 17, 2026
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