Weather forecast for 10 daysSunset Key, FL

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 82°F
  • 79°F
Scattered Thunderstorms / Wind
Scattered Thunderstorms / Wind
  • Precip. probability: 43%
  • Precipitation: 0.2"
  • Wind: 21mphNE 49°
  • Humidity: 81%
  • UV index: 6
  • Sunrise: 7:26 am EDT
  • Sunset: 6:58 pm EDT
  • ▼
Tomorrow, on Sunday, October 18, expect scattered thunderstorms, and the winds will make conditions feel much colder.
The chance of rainfall is low, and light precipitation is anticipated. Slight changes in temperature are expected, reaching a high of a moderately hot 82.4°F and decreasing to a low of a temperate 78.8°F.
The maximum heat index, which measures the combined effect of heat and moisture, is evaluated at a hot 89.6°F. Take into consideration that the heat index values are calculated for shade and light wind conditions.
Sunrise will be at 7:26 am and sunset at 6:58 pm; tomorrow's daylight will last for 11h and 31min.

10-day overview

Daily temperatures

Warmest period: Monday - Tuesday 84°C.
Coldest period: Sunday - Monday 81°C.

Chance of precipitation

Highest chance: tomorrow 43%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 77°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Precip. probability: 42%
  • Precipitation: 0.04"
  • Wind: 19mphNE 37°
  • Humidity: 86%
  • UV index: 0
  • Sunrise: 7:26 am EDT
  • Sunset: 6:58 pm EDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 82°F
  • 79°F
Scattered Thunderstorms / Wind
Scattered Thunderstorms / Wind
  • Precip. probability: 43%
  • Precipitation: 0.2"
  • Wind: 21mphNE 49°
  • Humidity: 81%
  • UV index: 6
  • Sunrise: 7:26 am EDT
  • Sunset: 6:58 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 84°F
  • 77°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 22mphNE 56°
  • Humidity: 71%
  • UV index: 9
  • Sunrise: 7:27 am EDT
  • Sunset: 6:57 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 84°F
  • 77°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 21mphNE 43°
  • Humidity: 72%
  • UV index: 9
  • Sunrise: 7:27 am EDT
  • Sunset: 6:56 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 82°F
  • 77°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 16mphNE 35°
  • Humidity: 67%
  • UV index: 9
  • Sunrise: 7:28 am EDT
  • Sunset: 6:55 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 82°F
  • 77°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 15mphNNE 33°
  • Humidity: 65%
  • UV index: 8
  • Sunrise: 7:28 am EDT
  • Sunset: 6:54 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 82°F
  • 77°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 16mphNE 37°
  • Humidity: 67%
  • UV index: 8
  • Sunrise: 7:29 am EDT
  • Sunset: 6:53 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 82°F
  • 75°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.08"
  • Wind: 18mphNE 35°
  • Humidity: 70%
  • UV index: 8
  • Sunrise: 7:29 am EDT
  • Sunset: 6:53 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 81°F
  • 75°F
AM Showers / Wind
AM Showers / Wind
  • Precip. probability: 41%
  • Precipitation: 0.08"
  • Wind: 21mphNNE 33°
  • Humidity: 73%
  • UV index: 8
  • Sunrise: 7:30 am EDT
  • Sunset: 6:52 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 81°F
  • 75°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 18mphNNE 26°
  • Humidity: 72%
  • UV index: 8
  • Sunrise: 7:30 am EDT
  • Sunset: 6:51 pm EDT
  • ▼
The next ten days will bring unstable conditions, and a mix of gloomy, stormy, sun-filled and rainy weather is expected.
Rainfall is expected on Saturday, Sunday, next Saturday and Sunday.
The maximum temperature will be very similar in the upcoming period. Highs will range from 80.6°F to 84.2°F, while the nighttime low will be also mostly stable, as the lowest temperatures will remain in the range of 75.2°F to 78.8°F.
With a maximum temperature of 84.2°F, Monday and Tuesday will be the hottest days; next Sunday and Monday, with the highest temperature of 80.6°F, will be the coldest days.
Taking the humidity into consideration, the maximum feel-like temperature may increase and vary between 84.2°F and a humid 91.4°F.
Updated: Oct 18, 2026 @ 03:11:54 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, scattered thunderstorms are expected, accompanied by strong winds later in the day.

Light precipitation of 0.2" is expected. The possibility of rainfall is 43%.

Tomorrow, the maximum temperature will be 82.4°F, while the minimum temperature will be 78.8°F. The maximum heat index, which combines relative humidity and air temperature, is assessed at 89.6°F.

On Sunday, in Sunset Key, sunrise will be at 7:26 am and sunset at 6:58 pm (EDT).

In Sunset Key, the length of the day tomorrow will be 11h and 31min.