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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.
Fog
70°F
21°C
| Humidity | 97% |
| Wind Speed | SW 5 mph |
| Barometer | 29.85 in (1010.9 mb) |
| Dewpoint | 69°F (21°C) |
| Visibility | 0.06 mi |
| Last update | 19 Jun 6:56 am EDT |
Extended Forecast for
Mount Sinai NY
Juneteenth
High: 87 °F
Mostly Sunny
then Chance
T-stormsTonight
Low: 69 °F
Chance
T-storms then
Chance
ShowersFriday
High: 82 °F
Sunny
Friday Night
Low: 66 °F
Mostly Clear
Saturday
High: 84 °F
Mostly Sunny
Saturday Night
Low: 68 °F
Mostly Cloudy
Sunday
High: 84 °F
Partly Sunny
Sunday Night
Low: 69 °F
Partly Cloudy
Monday
High: 87 °F
Sunny
Detailed Forecast
Juneteenth
A chance of thunderstorms after 5pm. Mostly sunny, with a high near 87. Southwest wind 5 to 13 mph. Chance of precipitation is 30%.
Tonight
A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 69. Southwest wind 11 to 17 mph.
Friday
Sunny, with a high near 82. West wind 10 to 13 mph.
Friday Night
Mostly clear, with a low around 66. West wind around 7 mph.
Saturday
Mostly sunny, with a high near 84. West wind 5 to 7 mph.
Saturday Night
Mostly cloudy, with a low around 68.
Sunday
Partly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 69.
Monday
Sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 72.
Tuesday
Sunny, with a high near 91.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Sunny, with a high near 88.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Mount Sinai NY
40.95°N 73.02°W (Elev. 56 ft)
40.95°N 73.02°W (Elev. 56 ft)
7:33 pm EDT Jun 18, 2025
7am EDT Jun 19, 2025-6pm EDT Jun 25, 2025
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Hourly Weather Forecast
