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Shaded-relief atlas plate of Smithtown, New York: rivers, roads, the city limits and where the water drains.
NEW YORK · SUFFOLK COUNTY

Smithtown

25,629 people, 80 ft above sea level in Suffolk County.

80 ftElevation, city center
25,629People, 2024 estimate
12 sq miLand area
Mostly cloudy 69°
Mostly cloudy now Dew point 60° · SW 8 mph · high 67°
City of Smithtown River Interstate 2 miles
Explore the plate Order a print

The Smithtown plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.

MILE1
TODAY

Today in Smithtown

NWS forecast and National Blend of Models · updated 4:00 PM EDT
RIGHT NOW Long Island Mac Arthur Airport (KISP) · 3:56 PM
Mostly cloudy
69° Mostly cloudy Feels like 69° · high of 67° near 4 PM
WindSW 8 mphno gusts
Humidity73%rising to 100% by morning
Pressure29.97 in →steady
Visibility10 mihaze-free
CloudsBrokenbases near 4,400 ft
UV index—no forecast
Dew point 60° · Stickyabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Rain
Friday40% chance · showers
LIKELY AMOUNT—amounts come within 3 days
LAST RAINSept. 271.92 in · 2 dry days
ALERTS & OUTLOOKS
No watches or warnings for Suffolk County
NWS Upton and the Storm Prediction Center · checked 4:54 PM
SUN & MOON
↑ 6:47 AM6:39 PM ↓
11 h 52 m of daylight, 3 minutes less than yesterday
Waning gibbous, 89% lit. The Harvest Moon was full Saturday.
AIR & POLLEN
21
GOODAir quality index · ozone
Tomorrow: 50, good. No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
TUESDAY, SEPT. 29
WEDNESDAY, SEPT. 30
THURSDAY, OCT. 1
FRIDAY, OCT. 2
4p
7p
10p
1a
4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
1p
4p
7p
10p
1a
4a
7a
10a
1p
partly cloudy day
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy day
mostly sunny
partly cloudy day
partly cloudy day
partly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy day
partly cloudy day
partly cloudy day
partly cloudy day
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy day
partly cloudy day
partly cloudy day
TEMPERATURE °F
67°
57°
71°
63°
72°
66°
CHANCE OF RAIN
50%
WIND, MPH
6
3
0
0
3
5
3
6
7
7
6
7
6
7
10
12
12
10
9
9
10
9
12
13
HOW IT FEELS · DEW POINT
Sticky: dew points 56 to 65°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 70° / 54°
TUE Sept. 29 Partly cloudy Partly cloudy
67° 57°
0% rain — W 6 A
WED Sept. 30 Partly cloudy Partly cloudy
72° 61°
0% rain — WSW 5 A
THU Oct. 1 Partly cloudy Partly cloudy
74° 64°
0% rain — SW 10 B
FRI Oct. 2 Chance of showers Chance of showers
77° 61°
40% rain up to 0.09″ WSW 12 A
SAT Oct. 3 Partly cloudy; cooler Partly cloudy; cooler
69° 54°
10% rain — E 7 B
SUN Oct. 4 Chance of showers Chance of showers
65° 53°
40% rain up to 0.8″ E 8 B
MON Oct. 5 Mostly sunny Mostly sunny
65° 48°
20% rain — NW 13 B
How sure are we? AModels agree: highs within 4° BSome spread: within 8° CWide spread: check back
Range from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL

Where today’s air came from

The air arriving over Smithtown about 5,000 feet above the ground was over the North Atlantic three days ago, and over Ontario a day ago, about 1,400 miles back along its path. It rose from near the ground on the way. Near the ground the air came from Canada; at 10,000 feet, from the Atlantic off the Carolinas. Traced back 72 hours through NOAA’s hourly RAP analyses and the GFS beyond them, nine paths at each of three heights.

MILE7
ON THE NETWORK

Around Smithtown on the Forecast Network

Neighboring plates

Brookhaven NY · 13 MI 13 miles east Hempstead NY · 26 MI 26 miles southwest New York NY · 40 MI 40 miles west Jersey City NJ · 46 MI 46 miles west Newark NJ · 51 MI 51 miles west Philadelphia PA · 117 MI 117 miles southwest
FORECASTCITY
Atlas plate of Smithtown, New York. Explore the plate
NEW YORK · SUFFOLK

Smithtown

25,629 people, 80 ft above sea level in Suffolk County.

80 ftElevation
25,629People
12 sq miLand
Mostly cloudy 69°
Mostly cloudyDew point 60°
1

Today in Smithtown

NEXT 15 HOURS
Now partly cloudy day 67° 0%
7p partly cloudy night 64° 1%
10p partly cloudy night 61° 1%
1a partly cloudy night 60° 1%
4a partly cloudy night 58° 0%
7a partly cloudy day 57° 0%
Rain
NEXT RAINFriday · 40%
→
Tue0%
Partly cloudy Partly cloudy
57
67
A
Wed0%
Partly cloudy Partly cloudy
61
72
A
Thu0%
Partly cloudy Partly cloudy
64
74
B
Fri40%
Chance of showers Chance of showers
61
77
A
Sat10%
Partly cloudy; cooler Partly cloudy; cooler
54
69
B
Sun40%
Chance of showers Chance of showers
53
65
B
Mon20%
Mostly sunny Mostly sunny
48
65
B
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
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