Building Heat and Monsoon in the West; Comfortable Weather in the East

Monsoonal moisture will produce a marginal threat for flash flooding in the Four Corners region the next few days, while heat gradually builds in the Desert Southwest and portions of California. In much of the central and eastern states, high pressure will provide quiet, comfortable weather for Wednesday. Read More >

Hazardous Weather Conditions

En Español

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

66°F

19°C

Humidity	96%
Wind Speed	E 7 mph
Barometer	29.89 in (1012.0 mb)
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Last update	24 Jul 12:56 am EDT

More Information:

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

Extended Forecast for

West Sayville NY

Overnight

Showers
Low: 67 °F
Wednesday

Slight Chance
Showers then
Mostly Sunny
High: 78 °F
Wednesday
Night

Partly Cloudy
Low: 64 °F
Thursday

Sunny
High: 82 °F
Thursday
Night

Mostly Clear
Low: 70 °F
Friday

Sunny
High: 83 °F
Friday
Night

Mostly Clear
Low: 70 °F
Saturday

Sunny
High: 84 °F
Saturday
Night

Mostly Clear
Low: 71 °F

Detailed Forecast

Overnight

Showers, mainly before 3am. Low around 67. Northeast wind 6 to 8 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday

A 20 percent chance of showers before 9am. Partly sunny, with a high near 78. Northeast wind 9 to 11 mph.

Wednesday Night

Partly cloudy, with a low around 64. Southeast wind around 6 mph becoming calm after midnight.

Thursday

Sunny, with a high near 82. North wind around 6 mph.

Thursday Night

Mostly clear, with a low around 70. South wind around 5 mph becoming calm in the evening.

Friday

Sunny, with a high near 83.

Friday Night

Mostly clear, with a low around 70.