Smithtown, NY Weather Forecast
Suffolk County, New York
Live radar, warnings and storm tracking for Smithtown, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Smithtown
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Smithtown, NY at a glance
Smithtown is home to about 115,460 people in Suffolk County, across 54 square miles. It ranks 13th by population of 593 places in New York with a forecast here. The nearest neighbour with its own forecast is Lake Grove, 5 miles away.
- County
- Suffolk County
- Population
- 115,460 2023 est.
- Land area
- 54 sq mi
- People per sq mi
- 2,148
- Forecast point
- 40.9188°N, 73.1773°W
How well can the network see Smithtown?
The nearest Doppler radar is KOKX (New York City, NY), to the ESE. Its lowest scan passes about 910 ft above Smithtown. That is about as close as US radar coverage gets: low-level rotation and gust fronts over Smithtown show up clearly. Smithtown is closer to its radar than 89% of US cities.
The closest weather station is KISP (Islip/Macarthur Arpt). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Smithtown
- Lake Grove, NY5 mi
- Port Jefferson, NY7 mi
- Islandia, NY8 mi
- Northport, NY9 mi
- Huntington, NY11 mi
- Brookhaven, NY12 mi
- Patchogue, NY14 mi
- Lloyd Harbor, NY14 mi
Elsewhere in New York
New YorkBrookhavenIslipOyster BayBuffaloNorth HempsteadAll New York forecasts →