


Current conditions at
Islip, Long Island Mac Arthur Airport (KISP)
Lat: 40.79°NLon: 73.1°WElev: 98ft.
Thunderstorm Light Rain
78°F
26°C
Humidity | 90% |
Wind Speed | SW 7 mph |
Barometer | 30.07 in (1018.2 mb) |
Dewpoint | 75°F (24°C) |
Visibility | 9.00 mi |
Heat Index | 80°F (27°C) |
Last update | 14 Jul 8:56 pm EDT |
Extended Forecast for
Holbrook NY
Tonight
Low: 73 °F
Showers
Likely and
Patchy FogTuesday
High: 83 °F
Showers
Likely and
Patchy Fog
then Slight
Chance
T-stormsTuesday Night
Low: 73 °F
Partly Cloudy
then Patchy
FogWednesday
High: 88 °F
Slight Chance
T-storms and
Patchy FogWednesday Night
Low: 74 °F
Chance
T-stormsThursday
High: 90 °F
Chance
Showers then
Chance
T-stormsThursday Night
Low: 76 °F
Chance
T-storms then
Partly CloudyFriday
High: 91 °F
Mostly Sunny
then Chance
T-stormsFriday Night
Low: 72 °F
Chance
T-storms then
Partly Cloudy
Detailed Forecast
Tonight
Showers likely and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 73. South wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers and thunderstorms likely, mainly before 11am. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 83. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 73. Southwest wind 3 to 6 mph.
Wednesday
A slight chance of showers, with thunderstorms also possible after 2pm. Patchy fog before 11am. Otherwise, partly sunny, with a high near 88. Heat index values as high as 95. Calm wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 20%.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Southwest wind 6 to 8 mph.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 30%.
Thursday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 76. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91.
Friday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 72.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 71.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 71.
Monday
Mostly sunny, with a high near 86.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Holbrook NY
40.8°N 73.09°W (Elev. 98 ft)
40.8°N 73.09°W (Elev. 98 ft)
2:29 pm EDT Jul 14, 2025
9pm EDT Jul 14, 2025-6pm EDT Jul 21, 2025