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Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
A Few Clouds
72°F
22°C
| Humidity | 73% |
| Wind Speed | W 5 mph |
| Barometer | 30.01 in (1016.0 mb) |
| Dewpoint | 63°F (17°C) |
| Visibility | 10.00 mi |
| Last update | 21 Jun 1:56 am EDT |
Extended Forecast for
Stony Brook NY
Extreme Heat Watch June 22, 12:00pm until June 24, 08:00pm
Overnight
Low: 67 °F
Partly Cloudy
Saturday
High: 84 °F
Mostly Sunny
Saturday Night
Low: 70 °F
Partly Cloudy
Sunday
High: 90 °F
Partly Sunny
Sunday Night
Low: 74 °F
Mostly Clear
Monday
High: 94 °F
Sunny
Monday Night
Low: 74 °F
Mostly Clear
Tuesday
High: 95 °F
Sunny
Tuesday Night
Low: 74 °F
Partly Cloudy
Detailed Forecast
Overnight
Partly cloudy, with a low around 67. West wind around 5 mph.
Saturday
Mostly sunny, with a high near 84. West wind 3 to 6 mph.
Saturday Night
Partly cloudy, with a low around 70. South wind around 8 mph.
Sunday
Partly sunny, with a high near 90. Heat index values as high as 95. Southwest wind around 11 mph.
Sunday Night
Mostly clear, with a low around 74. West wind 6 to 9 mph.
Monday
Sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny, with a high near 95.
Tuesday Night
Partly cloudy, with a low around 74.
Wednesday
Sunny, with a high near 88.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
Partly sunny, with a high near 82.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 66.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 82.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Stony Brook NY
40.92°N 73.15°W (Elev. 36 ft)
40.92°N 73.15°W (Elev. 36 ft)
9:01 pm EDT Jun 20, 2025
2am EDT Jun 21, 2025-6pm EDT Jun 27, 2025
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Hourly Weather Forecast
