Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

69°F

21°C

Humidity	63%
Wind Speed	N 13 mph
Barometer	30.10 in (1019.2 mb)
Dewpoint	56°F (13°C)
Visibility	10.00 mi
Last update	29 Aug 1:56 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

West Sayville NY

Overnight
Low: 60 °F
Mostly Clear
Saturday
High: 78 °F
Sunny
Saturday Night
Low: 62 °F
Mostly Clear
Sunday
High: 80 °F
Mostly Sunny
Sunday Night
Low: 69 °F
Chance
Showers
Monday
High: 81 °F
Partly Sunny
Monday Night
Low: 68 °F
Mostly Cloudy
then Chance
Showers
Tuesday
High: 79 °F
Chance
Showers
Tuesday Night
Low: 70 °F
Chance
T-storms

Detailed Forecast

Overnight

Mostly clear, with a low around 60. North wind around 9 mph.

Saturday

Sunny, with a high near 78. North wind 5 to 8 mph becoming northwest in the afternoon.

Saturday Night

Mostly clear, with a low around 62. Light southwest wind.

Sunday

Mostly sunny, with a high near 80. Light west wind becoming southwest 8 to 13 mph in the morning.

Sunday Night

A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 69. Southwest wind 7 to 11 mph. Chance of precipitation is 40%.

Monday

Partly sunny, with a high near 81.

Monday Night

A 40 percent chance of showers after 2am. Mostly cloudy, with a low around 68.

Tuesday

A 30 percent chance of showers before 2pm. Mostly cloudy, with a high near 79.

Tuesday Night

A chance of thunderstorms before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.

Wednesday

A 40 percent chance of showers after 2pm. Mostly cloudy, with a high near 81.

Wednesday Night

A 50 percent chance of showers. Mostly cloudy, with a low around 70.

Thursday

A 40 percent chance of showers. Partly sunny, with a high near 82.

Thursday Night

A 30 percent chance of showers. Mostly cloudy, with a low around 68.

Friday

Mostly sunny, with a high near 79.