Weather forecast for 10 daysFisher Island, FL

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 81°F
  • 79°F
Thunderstorms / Wind
Thunderstorms / Wind
  • Precip. probability: 79%
  • Precipitation: 1.1"
  • Wind: 21mphNE 37°
  • Humidity: 79%
  • UV index: 4
  • Sunrise: 7:20 am EDT
  • Sunset: 6:50 pm EDT
  • ▼
Tomorrow, in Fisher Island, stormy skies and persistent wind are also expected.
Substantial precipitation is predicted. A modest temperature shift from a warm 80.6°F at its peak to a temperate 78.8°F at its lowest point is anticipated.
The maximum heat index, which calculates the temperature value influenced by the moisture in the air, is assessed at a humid 86°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
Tomorrow's high is forecasted to coincide with the typical October maximum of 82.8°F.
Sunrise will be at 7:20 am and sunset at 6:50 pm; tomorrow's daylight will last for 11h and 29min.

10-day overview

Daily temperatures

Warmest day: Monday 84°C.
Minimum temperature: 81°C.

Chance of precipitation

Highest chance: tomorrow 79%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 75°F
Thunderstorms
Thunderstorms
  • Precip. probability: 77%
  • Precipitation: 0.16"
  • Wind: 15mphN 6°
  • Humidity: 90%
  • UV index: 0
  • Sunrise: 7:20 am EDT
  • Sunset: 6:51 pm EDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 81°F
  • 79°F
Thunderstorms / Wind
Thunderstorms / Wind
  • Precip. probability: 79%
  • Precipitation: 1.1"
  • Wind: 21mphNE 37°
  • Humidity: 79%
  • UV index: 4
  • Sunrise: 7:20 am EDT
  • Sunset: 6:50 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 84°F
  • 75°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 19mphNE 48°
  • Humidity: 63%
  • UV index: 8
  • Sunrise: 7:21 am EDT
  • Sunset: 6:49 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 82°F
  • 73°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 16mphNE 35°
  • Humidity: 65%
  • UV index: 8
  • Sunrise: 7:22 am EDT
  • Sunset: 6:48 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 82°F
  • 72°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 14mphNNE 25°
  • Humidity: 63%
  • UV index: 8
  • Sunrise: 7:22 am EDT
  • Sunset: 6:47 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 82°F
  • 72°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 12mphNNE 24°
  • Humidity: 63%
  • UV index: 8
  • Sunrise: 7:23 am EDT
  • Sunset: 6:46 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 82°F
  • 73°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 14mphNNE 29°
  • Humidity: 63%
  • UV index: 8
  • Sunrise: 7:23 am EDT
  • Sunset: 6:46 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 81°F
  • 73°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Precip. probability: 55%
  • Precipitation: 0.28"
  • Wind: 17mphNE 34°
  • Humidity: 67%
  • UV index: 8
  • Sunrise: 7:24 am EDT
  • Sunset: 6:45 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 81°F
  • 72°F
Rain
Rain
  • Precip. probability: 60%
  • Precipitation: 0.39"
  • Wind: 18mphNE 34°
  • Humidity: 72%
  • UV index: 7
  • Sunrise: 7:24 am EDT
  • Sunset: 6:44 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 81°F
  • 73°F
Few Showers
Few Showers
  • Precip. probability: 38%
  • Precipitation: 0.16"
  • Wind: 16mphNNE 28°
  • Humidity: 70%
  • UV index: 7
  • Sunrise: 7:25 am EDT
  • Sunset: 6:43 pm EDT
  • ▼
Over the course of the next ten days, expect shifting weather, and a mix of lightning-active, gloomy, sunny and wet weather is forecasted.
Rainfall is predicted for Saturday, Sunday, next Saturday through next Monday.
The temperature shift across days will be subtle in the coming days. Maximum temperatures will fall between 80.6°F and 84.2°F, while the forecast minimum temperature falls between 71.6°F and 78.8°F.
With the highest temperature of 84.2°F, Monday will be the hottest day; Sunday, next Saturday through next Monday, with the highest temperature of 80.6°F, will be the coldest days in Fisher Island, Florida.
Updated: Oct 18, 2026 @ 03:31:31 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, thunderstorms with wind gusts are anticipated.

Yes. With a probability of 79%, increased precipitation of 1.1" is forecasted in Fisher Island.

Tomorrow, the highest temperature will be 80.6°F, while the lowest temperature will be 78.8°F. The maximum heat index, which reflects the perceived temperature due to humidity levels, is evaluated at 86°F.
The highest temperature will be in line with the average maximum of 82.8°F in October. Tomorrow, the lowest temperature will be also in line with the average low temperature.

On Sunday, in Fisher Island, sunrise will be at 7:20 am and sunset at 6:50 pm (EDT).

In Fisher Island, tomorrow, there will be 11h and 29min of daylight.