Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
76°F
24°C
| Humidity | 67% |
| Wind Speed | SW 7 mph |
| Barometer | 30.23 in (1023.8 mb) |
| Dewpoint | 64°F (18°C) |
| Visibility | 10.00 mi |
| Heat Index | 78°F (26°C) |
| Last update | 13 Jul 8:56 am EDT |
Extended Forecast for
Stony Brook NY
Heat Advisory July 14, 12:00pm until July 15, 09:00pm
Today
High: 86 °F
Sunny
Tonight
Low: 70 °F
Clear
Tuesday
High: 90 °F
Sunny
Tuesday Night
Low: 76 °F
Mostly Clear
Wednesday
High: 98 °F
Sunny
Wednesday Night
Low: 74 °F
Mostly Cloudy
Thursday
High: 93 °F
Mostly Sunny
Thursday Night
Low: 72 °F
Partly Cloudy
Friday
High: 89 °F
Sunny
Detailed Forecast
Today
Sunny, with a high near 86. South wind 5 to 11 mph.
Tonight
Clear, with a low around 70. South wind 9 to 11 mph.
Tuesday
Sunny, with a high near 90. Southwest wind 9 to 17 mph.
Tuesday Night
Mostly clear, with a low around 76. Southwest wind 14 to 16 mph.
Wednesday
Sunny, with a high near 98. West wind around 11 mph.
Wednesday Night
Mostly cloudy, with a low around 74.
Thursday
Mostly sunny, with a high near 93.
Thursday Night
Partly cloudy, with a low around 72.
Friday
Sunny, with a high near 89.
Friday Night
Partly cloudy, with a low around 71.
Saturday
A 30 percent chance of showers. Mostly sunny, with a high near 86.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 71.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 89.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Stony Brook NY
40.92°N 73.12°W (Elev. 112 ft)
40.92°N 73.12°W (Elev. 112 ft)
5:58 am EDT Jul 13, 2026
9am EDT Jul 13, 2026-6pm EDT Jul 19, 2026
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