Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
75°F
24°C
| Humidity | 90% |
| Wind Speed | N 5 mph |
| Barometer | 30.07 in (1018.1 mb) |
| Dewpoint | 72°F (22°C) |
| Visibility | 10.00 mi |
| Last update | 15 Jul 5:56 am EDT |
Extended Forecast for
Islip NY
Today
High: 83 °F
Chance
Showers and
Patchy Fog
then Slight
Chance
T-stormsTonight
Low: 73 °F
Patchy Fog
Wednesday
High: 85 °F
Patchy Fog
then Mostly
SunnyWednesday Night
Low: 74 °F
Chance
T-stormsThursday
High: 88 °F
Chance
Showers then
Chance
T-stormsThursday Night
Low: 77 °F
Chance
T-storms then
Partly CloudyFriday
High: 89 °F
Mostly Sunny
then Chance
T-stormsFriday Night
Low: 71 °F
Chance
T-storms then
Partly CloudySaturday
High: 83 °F
Mostly Sunny
Detailed Forecast
Today
A 50 percent chance of showers and thunderstorms, mainly before 11am. Patchy fog before 9am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 83. Calm wind becoming south 5 to 9 mph in the morning.
Tonight
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 73. South wind 5 to 7 mph becoming calm in the evening.
Wednesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 85. Heat index values as high as 96. Light west wind becoming south 6 to 11 mph in the morning.
Wednesday Night
A 50 percent chance of showers and thunderstorms, mainly after 8pm. Mostly cloudy, with a low around 74. Southwest wind 6 to 8 mph.
Thursday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 88. Southwest wind 7 to 13 mph.
Thursday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 77. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 71.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Mostly cloudy, with a low around 71.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 84.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 71.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 84.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Islip NY
40.73°N 73.22°W (Elev. 7 ft)
40.73°N 73.22°W (Elev. 7 ft)
6:03 am EDT Jul 15, 2025
6am EDT Jul 15, 2025-6pm EDT Jul 21, 2025
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