Widespread Summer Heat; Enhanced Severe Weather

A large ridge of high pressure continues to deliver summer heat w/ humidity in several sections of the country. Excessive heat warnings and heat advisories are in effect across the Desert Southwest, south-central Plains, Mid to Lower Mississippi Valley and a small part of the Mid-Atlantic. Meanwhile, an enhanced risk of organized severe thunderstorms is possible from Iowa to Illinois and Indiana. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

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

Mostly Cloudy

87°F

31°C

Humidity 42%
Wind Speed Calm
Barometer 30.08 in (1018.5 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 20 Aug 1:56 pm EDT
Detailed forecast for

Southwest Suffolk

This Afternoon
Mostly sunny. Near steady temperature in the lower 80s. South winds 5 to 10 mph.
Tonight
Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Patchy fog after midnight. Humid with lows in the lower 70s. South winds 5 to 10 mph. Chance of rain 30 percent.
Wednesday
Mostly cloudy with a chance of showers and thunderstorms. Humid with highs in the lower 80s. South winds 10 to 15 mph. Chance of rain 50 percent.
Wednesday Night
Mostly cloudy with a chance of showers and thunderstorms. Humid with lows in the lower 70s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.
Thursday
Partly sunny with a chance of showers and thunderstorms. Humid with highs in the mid 80s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent.
Thursday Night
Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 50 percent.
Friday
Partly sunny with a chance of showers and thunderstorms. Highs in the upper 70s. Chance of rain 30 percent.
Friday Night
Partly cloudy. Lows in the lower 60s.
Saturday
Sunny. Highs in the upper 70s.
Saturday Night
Mostly clear. Lows in the lower 60s.
Sunday
Sunny. Highs in the mid 70s.
Sunday Night
Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s.
Monday
Mostly sunny. Highs in the mid 70s.



Click Map For Forecast
1205 PM EDT Tue Aug 20 2019
 
 

Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database