Fire Weather Conditions in the Northwest U.S.; Heavy Rain in the West and South-central U.S.

Extreme heat is waning over the Pacific Northwest. Dry, gusty winds, and isolated dry thunderstorms will bring critical fire weather to the Pacific Northwest and Intermountain West. Heavy rain and thunderstorms continue across portions of the Great Basin, Rockies, and central/southern Plains into the Ozarks. An atmospheric river will bring heavy rain and strong winds to southwest Alaska. 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

63°F

17°C

Humidity 70%
Wind Speed NW 6 mph
Barometer 30.00 in (1015.8 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 27 Aug 2:56 am EDT
Detailed forecast for

Northwest Suffolk

Today
Sunny. Highs in the upper 70s. Northwest winds 5 to 10 mph.
Tonight
Mostly clear. Lows in the upper 50s. Northwest winds 5 to 10 mph.
Thursday
Mostly sunny. Highs in the upper 70s. Southwest winds 5 to 10 mph.
Thursday Night
Partly cloudy in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows in the lower 60s. South winds around 10 mph. Gusts up to 20 mph in the evening. Chance of rain 20 percent.
Friday
Partly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the upper 70s. Southwest winds 5 to 10 mph. Chance of rain 50 percent.
Friday Night
Mostly cloudy with a chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 50s. Chance of rain 50 percent.
Saturday
Sunny. Highs in the mid 70s.
Saturday Night
Mostly clear. Lows in the upper 50s.
Sunday
Sunny. Highs in the upper 70s.
Sunday Night
Partly cloudy. Lows around 60.
Labor Day
Mostly sunny. Highs in the upper 70s.
Monday Night
Partly cloudy in the evening, then becoming mostly cloudy. Lows around 60.
Tuesday
Mostly sunny. Highs in the mid 70s.



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140 AM EDT Wed Aug 27 2025
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database