Locust Valley, NY Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Locust Valley, NY in one place.
Mostly sunny, with a high near 83. Northwest wind around 12 mph.
Local Weather Overview
This forecast page for Locust Valley, 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 17, 2026 9:27 AM EDT.
The active forecast window currently covers Jul 19 to Jul 23, 2026 for Locust Valley, NY.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 19 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 9:27 AM EDT
- Forecast office
- OKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Locust Valley
Wednesday looks like the warmest upcoming period in Locust Valley at 87 degrees F.
Sunday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Tuesday at about 6 to 15 mph S.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 9:27 AM EDT
- Coverage
- 5 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
Mostly clear, with a low around 66.
Sunny, with a high near 83.
Partly cloudy, with a low around 70.
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 8pm, then showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 80%.
Rain showers likely before 2pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 60%.
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 68.
Sunny, with a high near 84.
Mostly clear, with a low around 68.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Jul 19
|
Mostly Sunny
|
83°F |
12 mph
NW
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
66°F |
3 to 9 mph
NW
|
|
Monday
Jul 20
|
Sunny
|
83°F |
3 to 10 mph
E
|
|
Monday Night
Jul 20
|
Partly Cloudy
|
70°F |
6 to 10 mph
S
|
|
Tuesday
Jul 21
|
Partly Sunny then Chance Showers And Thunderstorms
|
85°F |
6 to 15 mph
S
|
|
Tuesday Night
Jul 21
|
Chance Showers And Thunderstorms then Showers And Thunderstorms
|
72°F |
12 to 15 mph
S
|
|
Wednesday
Jul 22
|
Rain Showers Likely then Slight Chance Showers And Thunderstorms
|
87°F |
13 mph
W
|
|
Wednesday Night
Jul 22
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
68°F |
7 to 10 mph
NW
|
|
Thursday
Jul 23
|
Sunny
|
84°F |
8 mph
NW
|
|
Thursday Night
Jul 23
|
Mostly Clear
|
68°F |
7 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Locust Valley.