Sunday
Mostly sunny
High:
54°F
Mostly sunny, with a high near 54. Calm wind becoming south 5 to 8 mph in the afternoon.
Islip, NY Weather - Extended Forecast
Sunday Night
Mostly cloudy
Overnight low:
45°F
Mostly cloudy, with a low around 45.
Monday
Mostly cloudy
High:
64°F
Mostly cloudy, with a high near 64.
Monday Night
Mostly cloudy
Overnight low:
53°F
Mostly cloudy, with a low around 53.
Tuesday
Mostly sunny
High:
68°F
Tuesday Night
Mostly cloudy
Overnight low:
52°F
Wednesday
Partly sunny
High:
68°F
Wednesday Night
Chance of showers
Overnight low:
54°F
Thursday
Partly sunny
High:
70°F