Severe Thunderstorms, Excessive Rainfall and Critical Fire Weather Concerns

Showers and thunderstorms, some severe containing large hail, damaging wind gusts and perhaps a tornado will be possible across areas of the Plains, northern Rockies and Intermountain West through midweek; Rainfall could be locally heavy as well with the concern of flash flooding. Rainfall could also be heavy for the mid-Atlantic and Southeast this week. Critical fire weather for the Southwest. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79° N Lon: 73.1° W Elev: 98 ft.

Partly Cloudy

64°F

18°C

Humidity	54%
Wind Speed	SE 10 mph
Barometer	30.19 in (1022.4 mb)
Dewpoint	47°F (8°C)
Visibility	10.00 mi
Last update	30 May 3:56 pm EDT

More Information:

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

Detailed forecast for

Northwest Suffolk

Tonight

Mostly clear this evening, then becoming mostly cloudy. Hazy this evening, then patchy fog after midnight. Lows in the upper 40s. East winds 5 to 10 mph.

Wednesday

Mostly sunny. Patchy fog in the morning. Hazy with patchy smoke. Highs in the mid 70s. East winds 5 to 10 mph.

Wednesday Night

Mostly clear in the evening, then becoming partly cloudy. Hazy with patchy smoke in the evening. Patchy fog after midnight. Lows in the mid 50s. South winds 5 to 10 mph, becoming southwest after midnight.

Thursday

Patchy fog in the morning. Sunny. Highs in the lower 80s. West winds around 5 mph, becoming south in the afternoon.

Thursday Night

Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. Southwest winds 5 to 10 mph.

Friday

Sunny. Highs in the mid 80s.

Friday Night

Partly cloudy in the evening, then mostly cloudy with a chance of showers after midnight. Lows around 60. Chance of rain 30 percent.

Saturday

Partly sunny. A chance of showers in the morning. Highs in the mid 70s. Chance of rain 30 percent.

Saturday Night

Partly cloudy. Lows in the lower 50s.