Weather forecast for 10 daysLocust Valley, NY

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 57°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 14mphNE 35°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:09 am EDT
  • Sunset: 6:09 pm EDT
  • ▼
Today, on Sunday, October 18, sunny skies and pleasant visibility are expected.
Temperatures are anticipated to range from a maximum of a refreshing 57.2°F to a minimum of a brisk 44.6°F.
The expected high will be slightly cooler than October's standard temperature of 63°F.
Sunrise will be at 7:09 am and sunset at 6:09 pm; the daylight will last for 11h and 1min.

10-day overview

Daily temperatures

Warmest day: Tuesday 68°C.
Minimum temperature: 57°C.

Chance of precipitation

Highest chance: Thursday 13%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 57°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 14mphNE 35°
  • Humidity: 51%
  • UV index: 4
  • Sunrise: 7:09 am EDT
  • Sunset: 6:09 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 63°F
  • 50°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 17mphNE 35°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 7:10 am EDT
  • Sunset: 6:08 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 68°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 16mphNNE 21°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:11 am EDT
  • Sunset: 6:06 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 61°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 16mphNNE 28°
  • Humidity: 58%
  • UV index: 4
  • Sunrise: 7:12 am EDT
  • Sunset: 6:05 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 63°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 13%
  • Precipitation: 0"
  • Wind: 12mphN 3°
  • Humidity: 55%
  • UV index: 4
  • Sunrise: 7:13 am EDT
  • Sunset: 6:03 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 59°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 13mphNNE 12°
  • Humidity: 49%
  • UV index: 4
  • Sunrise: 7:14 am EDT
  • Sunset: 6:02 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 57°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 10mphNNE 32°
  • Humidity: 54%
  • UV index: 4
  • Sunrise: 7:16 am EDT
  • Sunset: 6:01 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 61°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 8mphNNW 327°
  • Humidity: 55%
  • UV index: 4
  • Sunrise: 7:17 am EDT
  • Sunset: 5:59 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 66°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 8mphNW 323°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 7:18 am EDT
  • Sunset: 5:58 pm EDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 64°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 11mphN 356°
  • Humidity: 60%
  • UV index: 3
  • Sunrise: 7:19 am EDT
  • Sunset: 5:57 pm EDT
  • ▼
Weather patterns suggest that a combination of bright and cloud-filled weather is expected.
Rainfall is not predicted in Locust Valley in the upcoming period.
In the upcoming days, the highest temperature will range between 57.2°F and 68°F, while nighttime temperatures are expected to vary from 39.2°F to 50°F.
Tuesday is expected to be the warmest, reaching up to 68°F; Sunday and Saturday, with the highest temperature of 57.2°F, will be the coldest days.
Updated: Oct 18, 2026 @ 09:24:38 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, expect consistent sunshine and open skies.

Today, the maximum temperature in Locust Valley will be 57.2°F, while the minimum temperature will be 44.6°F.
The highest temperature today will be relatively lower than the average maximum temperature in October. Today, the lowest temperature will be also relatively lower than the average low temperature.

On Sunday, in Locust Valley, sunrise will be at 7:09 am and sunset at 6:09 pm (EDT).

Today, the daylight will last for 11h and 1min.