Hazardous Weather Conditions
Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Mostly Cloudy
76°F
24°C
| Humidity | 91% |
| Wind Speed | Calm |
| Barometer | 30.08 in (1018.5 mb) |
| Dewpoint | 73°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 76°F (24°C) |
| Last update | 15 Jul 9:56 am EDT |
Extended Forecast for
Saint James NY
Today
High: 85 °F
Chance
Showers then
Slight Chance
T-stormsTonight
Low: 72 °F
Patchy Fog
Wednesday
High: 88 °F
Patchy Fog
then Mostly
SunnyWednesday Night
Low: 74 °F
Chance
T-stormsThursday
High: 90 °F
Chance
Showers then
Chance
T-stormsThursday Night
Low: 77 °F
Chance
T-storms then
Partly CloudyFriday
High: 90 °F
Mostly Sunny
then Chance
T-stormsFriday Night
Low: 70 °F
Chance
T-storms then
Partly CloudySaturday
High: 85 °F
Sunny
Detailed Forecast
Today
A 30 percent chance of showers and thunderstorms, mainly before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 85. South wind 5 to 8 mph.
Tonight
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 72. South wind 5 to 7 mph becoming calm after midnight.
Wednesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 88. Heat index values as high as 98. Light and variable wind becoming south 5 to 9 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 90. 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 90.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 70.
Saturday
Sunny, with a high near 85.
Saturday Night
Mostly cloudy, with a low around 70.
Sunday
A 50 percent chance of showers. Partly sunny, with a high near 86.
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 85.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Saint James NY
40.88°N 73.16°W (Elev. 148 ft)
40.88°N 73.16°W (Elev. 148 ft)
6:03 am EDT Jul 15, 2025
10am EDT Jul 15, 2025-6pm EDT Jul 21, 2025
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
