Weather forecast for 10 daysCudjoe Key, FL

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 84°F
  • 77°F
Thunderstorms
Thunderstorms
  • Precip. probability: 67%
  • Precipitation: 0.47"
  • Wind: 19mphNE 47°
  • Humidity: 79%
  • UV index: 6
  • Sunrise: 7:25 am EDT
  • Sunset: 6:56 pm EDT
  • ▼
Today, in Cudjoe Key, rumbles of thunder are likely.
The chance of rainfall is high, and precipitation will be moderate. The temperature will peak at a warm 84.2°F during the day, slightly dropping to a low of a temperate 77°F at night.
The maximum heat index, which adjusts the air temperature based on humidity, is calculated to be a sizzling 95°F. Note that heat index values are valued for light wind and location in the shade. Bear in mind that direct sunshine exposure increases weather impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
The expected high temperature will align with October's average of 82°F.
Sunrise will be at 7:25 am and sunset at 6:56 pm; the daylight will last for 11h and 31min.

10-day overview

Daily temperatures

Warmest day: tomorrow 88°C.
Coldest period: Wednesday - Tuesday 82°C.

Chance of precipitation

Highest chance: today 67%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 84°F
  • 77°F
Thunderstorms
Thunderstorms
  • Precip. probability: 67%
  • Precipitation: 0.47"
  • Wind: 19mphNE 47°
  • Humidity: 79%
  • UV index: 6
  • Sunrise: 7:25 am EDT
  • Sunset: 6:56 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 88°F
  • 77°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 21mphENE 57°
  • Humidity: 66%
  • UV index: 8
  • Sunrise: 7:25 am EDT
  • Sunset: 6:55 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 86°F
  • 75°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 19mphNE 43°
  • Humidity: 66%
  • UV index: 9
  • Sunrise: 7:26 am EDT
  • Sunset: 6:54 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 82°F
  • 77°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 16mphNNE 31°
  • Humidity: 64%
  • UV index: 8
  • Sunrise: 7:27 am EDT
  • Sunset: 6:54 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 82°F
  • 75°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 11%
  • Precipitation: 0"
  • Wind: 14mphNE 37°
  • Humidity: 65%
  • UV index: 8
  • Sunrise: 7:27 am EDT
  • Sunset: 6:53 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 82°F
  • 75°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 15mphNE 44°
  • Humidity: 67%
  • UV index: 8
  • Sunrise: 7:28 am EDT
  • Sunset: 6:52 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 82°F
  • 75°F
PM Showers
PM Showers
  • Precip. probability: 38%
  • Precipitation: 0.2"
  • Wind: 18mphNE 34°
  • Humidity: 67%
  • UV index: 8
  • Sunrise: 7:28 am EDT
  • Sunset: 6:51 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 82°F
  • 75°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 21mphNNE 32°
  • Humidity: 71%
  • UV index: 8
  • Sunrise: 7:29 am EDT
  • Sunset: 6:50 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 82°F
  • 75°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 21mphNNE 24°
  • Humidity: 68%
  • UV index: 8
  • Sunrise: 7:29 am EDT
  • Sunset: 6:50 pm EDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 82°F
  • 77°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 18mphNNE 22°
  • Humidity: 69%
  • UV index: 8
  • Sunrise: 7:30 am EDT
  • Sunset: 6:49 pm EDT
  • ▼
During the ten-day period, primarily gloomy and occasionally turbulent and rain-filled weather is expected.
Rainfall is forecasted for Sunday and Saturday.
Temperature variation will be minimal in the upcoming days. Expected highs will hover between 82.4°F and 87.8°F, while the nighttime low will be also mostly stable, as the lowest temperatures will remain in the range of 75.2°F to 77°F.
With the highest temperature of 87.8°F, Monday will be the hottest day; on most other days, the temperature will stabilize at 82.4°F.
Including the humidity's impact, the maximum feel-like temperature may increase and vary between a tropical 86°F and a very hot 96.8°F.
Updated: Oct 18, 2026 @ 09:40:34 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, unstable skies bring the chance of thunderstorms.

Moderate precipitation of 0.47" is expected. The chance of rainfall is 67%.

Today, the maximum temperature will be 84.2°F, while the minimum temperature will be 77°F. The maximum heat index, which adjusts the air temperature based on humidity, is evaluated at 95°F.
The highest temperature today will be in line with the average maximum temperature in October. The lowest temperature today will be also in line with the average low temperature.

On Sunday, in Cudjoe Key, sunrise will be at 7:25 am and sunset at 6:56 pm (EDT).

Today in Cudjoe Key, the daylight will last for 11h and 31min.