Smithtown, NY Weather Forecast
Local 7-day forecast
Patchy Fog then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Smithtown, NY in one place.
Patchy fog before 8am, then a slight chance of showers and thunderstorms between 2pm and 5pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. West wind 6 to 9 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Smithtown, NY is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 10, 2026 8:46 AM EDT.
The active forecast window currently covers Jul 10 to Jul 16, 2026 for Smithtown, NY.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 10 to Jul 16, 2026
- Latest sync
- Jul 10, 2026 8:46 AM EDT
- Forecast office
- OKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Smithtown
Wednesday looks like the warmest upcoming period in Smithtown at 82 degrees F.
Saturday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Tuesday at about 9 to 15 mph SW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 10, 2026 8:46 AM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- OKX
- Radar station
- KOKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms between 11pm and 2am, then patchy fog and a slight chance of rain showers. Mostly cloudy, with a low around 70. Northwest wind 3 to 7 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
Patchy fog and a slight chance of rain showers before 2pm. Partly sunny. High near 77, with temperatures falling to around 73 in the afternoon. Northeast wind around 8 mph. Chance of precipitation is 20%.
Mostly clear, with a low around 67. Northeast wind 2 to 6 mph.
Sunny. High near 77, with temperatures falling to around 74 in the afternoon. East wind around 7 mph.
Mostly clear, with a low around 68.
Sunny, with a high near 77.
Mostly clear, with a low around 69.
Sunny, with a high near 80.
Mostly clear, with a low around 73.
Sunny, with a high near 82.
Sunny, with a high near 82.
A slight chance of rain showers between 8pm and 2am. Partly cloudy, with a low around 72.
A slight chance of rain showers between 8pm and 2am. Partly cloudy, with a low around 72.
Mostly sunny, with a high near 81.
Mostly sunny, with a high near 81.
Partly cloudy, with a low around 73.
Partly cloudy, with a low around 73.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 10
|
Patchy Fog then Slight Chance Showers And Thunderstorms
|
81°F |
6 to 9 mph
W
|
|
Tonight
Jul 10
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
70°F |
3 to 7 mph
NW
|
|
Saturday
Jul 11
|
Patchy Fog
|
77°F |
8 mph
NE
|
|
Saturday Night
Jul 11
|
Mostly Clear
|
67°F |
2 to 6 mph
NE
|
|
Sunday
Jul 12
|
Sunny
|
77°F |
7 mph
E
|
|
Sunday Night
Jul 12
|
Mostly Clear
|
68°F |
2 to 6 mph
S
|
|
Monday
Jul 13
|
Sunny
|
77°F |
2 to 13 mph
SW
|
|
Monday Night
Jul 13
|
Mostly Clear
|
69°F |
13 mph
SW
|
|
Tuesday
Jul 14
|
Sunny
|
80°F |
9 to 15 mph
SW
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
73°F |
15 mph
SW
|
|
Wednesday
Jul 15
|
Sunny
|
82°F |
12 to 15 mph
SW
|
|
Wednesday
Jul 15
|
Sunny
|
82°F |
12 to 15 mph
SW
|
|
Wednesday Night
Jul 15
|
Slight Chance Rain Showers
|
72°F |
7 to 15 mph
W
|
|
Wednesday Night
Jul 15
|
Slight Chance Rain Showers
|
72°F |
7 to 15 mph
W
|
|
Thursday
Jul 16
|
Mostly Sunny
|
81°F |
6 to 10 mph
W
|
|
Thursday
Jul 16
|
Mostly Sunny
|
81°F |
6 to 10 mph
W
|
|
Thursday Night
Jul 16
|
Partly Cloudy
|
73°F |
6 to 9 mph
W
|
|
Thursday Night
Jul 16
|
Partly Cloudy
|
73°F |
6 to 9 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Smithtown.
