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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.
Overcast
65°F
18°C
Humidity | 78% |
Wind Speed | NE 6 mph |
Barometer | 30.18 in (1021.8 mb) |
Dewpoint | 58°F (14°C) |
Visibility | 10.00 mi |
Last update | 27 Jun 3:56 am EDT |
Extended Forecast for
Holtsville NY
Today
High: 70 °F
Partly Sunny
Tonight
Low: 65 °F
Chance
Showers and
Patchy FogSaturday
High: 82 °F
Chance
Showers and
Patchy Fog
then Partly
SunnySaturday Night
Low: 70 °F
Chance
T-stormsSunday
High: 87 °F
Mostly Sunny
Sunday Night
Low: 66 °F
Mostly Clear
Monday
High: 86 °F
Mostly Sunny
Monday Night
Low: 71 °F
Chance
T-stormsTuesday
High: 85 °F
Chance
Showers
Detailed Forecast
Today
Partly sunny, with a high near 70. East wind 9 to 14 mph.
Tonight
A chance of showers between 11pm and 2am, then a chance of showers and thunderstorms after 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 65. Southeast wind 8 to 10 mph. Chance of precipitation is 50%.
Saturday
A 30 percent chance of showers and thunderstorms before 11am. Patchy fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 82. South wind 7 to 9 mph.
Saturday Night
A 50 percent chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 70. South wind 7 to 9 mph.
Sunday
Mostly sunny, with a high near 87. West wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 66.
Monday
Mostly sunny, with a high near 86.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Tuesday
A 50 percent chance of showers. Partly sunny, with a high near 85.
Tuesday Night
Mostly cloudy, with a low around 71.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Partly cloudy, with a low around 69.
Thursday
Mostly sunny, with a high near 87.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Holtsville NY
40.82°N 73.05°W (Elev. 112 ft)
40.82°N 73.05°W (Elev. 112 ft)
3:15 am EDT Jun 27, 2025
4am EDT Jun 27, 2025-6pm EDT Jul 3, 2025