


Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
85°F
29°C
Humidity | 75% |
Wind Speed | SW 15 G 24 mph |
Barometer | 29.86 in (1010.9 mb) |
Dewpoint | 76°F (24°C) |
Visibility | 10.00 mi |
Heat Index | 95°F (35°C) |
Last update | 17 Jul 11:56 am EDT |
Extended Forecast for
Hauppauge NY
Heat Advisory July 17, 12:23pm until July 17, 10:00pm
NOW until 10:00pm Thu
Heat Advisory
This Afternoon
High: 90 °F
Slight Chance
T-stormsTonight
Low: 73 °F
Mostly Clear
Friday
High: 84 °F
Mostly Sunny
Friday Night
Low: 68 °F
Mostly Clear
Saturday
High: 84 °F
Mostly Sunny
then Slight
Chance
ShowersSaturday Night
Low: 72 °F
Showers
LikelySunday
High: 85 °F
Showers
Likely then
Chance
T-stormsSunday Night
Low: 68 °F
Partly Cloudy
Detailed Forecast
This Afternoon
A 20 percent chance of showers and thunderstorms before 2pm. Mostly sunny, with a high near 90. Heat index values as high as 101. Southwest wind around 15 mph.
Tonight
Mostly clear, with a low around 73. Northwest wind 10 to 13 mph.
Friday
Mostly sunny, with a high near 84. Northwest wind 8 to 10 mph.
Friday Night
Mostly clear, with a low around 68. North wind 3 to 5 mph.
Saturday
A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 84. Light and variable wind becoming south 5 to 8 mph in the morning.
Saturday Night
Showers likely and possibly a thunderstorm, mainly after 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely and possibly a thunderstorm before 8am, then a chance of showers and thunderstorms after 8am. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
Mostly sunny, with a high near 84.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Hauppauge NY
40.82°N 73.2°W (Elev. 197 ft)
40.82°N 73.2°W (Elev. 197 ft)
6:08 am EDT Jul 17, 2025
12pm EDT Jul 17, 2025-6pm EDT Jul 23, 2025