Weather forecast for 10 daysSmithtown, NY

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 52°F
  • 41°F
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 19mphN 349°
  • Humidity: 48%
  • UV index: 4
  • Sunrise: 7:06 am EDT
  • Sunset: 6:09 pm EDT
  • ▼
On Saturday, in Smithtown, low-hanging clouds will persist throughout the day.
The maximum forecasted temperature is a cool 51.8°F, while the minimum temperature will be an icy 41°F.
Today, the forecast high deviates from October's norm and tracks November's average temperature of 51.4°F.
Sunrise was at 7:06 am and sunset will be at 6:09 pm; the daylight will last for 11h and 3min.

Sunday Oct 18, 2026

  • 57°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 14mphNNE 32°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:07 am EDT
  • Sunset: 6:08 pm EDT
  • ▼
On Sunday, in Smithtown, sunshine and minimal clouds are also in the outlook.
Anticipated temperature values will span from a moderate 57.2°F down to a brisk 42.8°F.
Tomorrow, the expected high temperature will be moderately lower than the average October peak of 62.2°F.
Sunrise will be at 7:07 am and sunset at 6:08 pm; tomorrow's daylight will last for 11h and 1min.

10-day overview

Daily temperatures

Warmest day: Tuesday 68°C.
Coldest day: today 52°C.

Chance of precipitation

Highest chance: 24%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 52°F
  • 41°F
Cloudy
Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 19mphN 349°
  • Humidity: 48%
  • UV index: 4
  • Sunrise: 7:06 am EDT
  • Sunset: 6:09 pm EDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 57°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 14mphNNE 32°
  • Humidity: 47%
  • UV index: 4
  • Sunrise: 7:07 am EDT
  • Sunset: 6:08 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 63°F
  • 50°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 17mphNNE 33°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 7:08 am EDT
  • Sunset: 6:06 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 68°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 17mphNNE 25°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:09 am EDT
  • Sunset: 6:05 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 61°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0.04"
  • Wind: 18mphNE 35°
  • Humidity: 60%
  • UV index: 4
  • Sunrise: 7:10 am EDT
  • Sunset: 6:03 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 63°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 16mphNNE 17°
  • Humidity: 59%
  • UV index: 4
  • Sunrise: 7:12 am EDT
  • Sunset: 6:02 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 61°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 14mphNNE 21°
  • Humidity: 54%
  • UV index: 4
  • Sunrise: 7:13 am EDT
  • Sunset: 6:00 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 59°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 15mphNNE 29°
  • Humidity: 59%
  • UV index: 4
  • Sunrise: 7:14 am EDT
  • Sunset: 5:59 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 63°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 23%
  • Precipitation: 0"
  • Wind: 12mphNNE 32°
  • Humidity: 63%
  • UV index: 4
  • Sunrise: 7:15 am EDT
  • Sunset: 5:58 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 66°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 11mphN 359°
  • Humidity: 63%
  • UV index: 4
  • Sunrise: 7:16 am EDT
  • Sunset: 5:56 pm EDT
  • ▼
Forecasts for the ten-day outlook show that a combination of cloudy and sun-filled weather is predicted.
Rainfall is not anticipated in Smithtown in the upcoming period.
Expect a substantial fluctuation in daytime highs over the next several days. Highs will range from 51.8°F to 68°F, while the forecast minimum temperature falls between 41°F and 50°F.
Tuesday is expected to be the warmest, reaching up to 68°F; today is the coldest day, with a maximum temperature of 51.8°F.
Updated: Oct 17, 2026 @ 16:56:02 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, cloud coverage will be extensive.

Today, the maximum temperature will be 51.8°F, while the minimum temperature will be 41°F.
Today, the maximum temperature will be notably lower than the average highest temperature of 62.2°F in October. The lowest temperature will be also significantly lower than the average low of 54.7°F.

On Saturday, in Smithtown, sunrise was at 7:06 am and sunset will be at 6:09 pm (EDT).

In Smithtown, the length of the day today will be 11h and 3min.

Tomorrow, a sun-drenched sky is anticipated.

Tomorrow, the highest temperature will be 57.2°F, while the lowest temperature will be 42.8°F.
The highest temperature will be a few degrees lower than the average maximum of 62.2°F in October. The lowest temperature tomorrow will be uncommonly lower than the average low of 54.7°F.

On Sunday, in Smithtown, sunrise will be at 7:07 am and sunset at 6:08 pm (EDT).

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