Weather forecast for 10 daysMarco Island, FL

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 84°F
  • 72°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 19mphNE 39°
  • Humidity: 75%
  • UV index: 8
  • Sunrise: 7:27 am EDT
  • Sunset: 6:56 pm EDT
  • ▼
Today, on Sunday, October 18, expect a cloudy start to the day, but conditions will clear, allowing for a bright and sunny afternoon.
Temperature span will be from a high of a warm 84.2°F to a low of an agreeable 71.6°F.
The maximum heat index, which calculates the temperature value influenced by the moisture in the air, is assessed at a humid 93.2°F. Note that heat index values are valued for light wind and location in the shade.
The forecasted maximum temperature will closely reflect October's average high of 86°F.
Sunrise will be at 7:27 am and sunset at 6:56 pm; the daylight will last for 11h and 29min.

10-day overview

Daily temperatures

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

Chance of precipitation

Highest chance: Tuesday 27.10. 21%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 84°F
  • 72°F
AM Clouds / PM Sun
AM Clouds / PM Sun
  • Precip. probability: 20%
  • Precipitation: 0"
  • Wind: 19mphNE 39°
  • Humidity: 75%
  • UV index: 8
  • Sunrise: 7:27 am EDT
  • Sunset: 6:56 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 88°F
  • 68°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 17mphNE 47°
  • Humidity: 66%
  • UV index: 8
  • Sunrise: 7:27 am EDT
  • Sunset: 6:55 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 84°F
  • 66°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 14mphNNE 33°
  • Humidity: 64%
  • UV index: 8
  • Sunrise: 7:28 am EDT
  • Sunset: 6:54 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 84°F
  • 66°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 11mphNNE 20°
  • Humidity: 63%
  • UV index: 8
  • Sunrise: 7:29 am EDT
  • Sunset: 6:53 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 84°F
  • 66°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 11mphNNE 24°
  • Humidity: 63%
  • UV index: 8
  • Sunrise: 7:29 am EDT
  • Sunset: 6:52 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 84°F
  • 68°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 12mphNNE 31°
  • Humidity: 61%
  • UV index: 8
  • Sunrise: 7:30 am EDT
  • Sunset: 6:52 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 84°F
  • 68°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 12%
  • Precipitation: 0"
  • Wind: 16mphNNE 33°
  • Humidity: 65%
  • UV index: 8
  • Sunrise: 7:30 am EDT
  • Sunset: 6:51 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 82°F
  • 68°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 18mphNNE 32°
  • Humidity: 67%
  • UV index: 8
  • Sunrise: 7:31 am EDT
  • Sunset: 6:50 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 82°F
  • 68°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 9%
  • Precipitation: 0"
  • Wind: 16mphNNE 23°
  • Humidity: 66%
  • UV index: 8
  • Sunrise: 7:31 am EDT
  • Sunset: 6:49 pm EDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 82°F
  • 68°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 13mphNNE 18°
  • Humidity: 65%
  • UV index: 8
  • Sunrise: 7:32 am EDT
  • Sunset: 6:48 pm EDT
  • ▼
It is expected that primarily clear and occasionally cloudy weather is anticipated.
Rainfall is not forecasted in Marco Island in the upcoming days.
Highs will stay within a very narrow margin during the next few days. Highs will range from 82.4°F to 87.8°F, while the lowest nighttime temperatures will be also relatively consistent, as night temperatures will lie between 66.2°F and 71.6°F.
Monday is expected to be the hottest, reaching up to 87.8°F; the coldest days will be next Sunday through next Tuesday, with a maximum of 82.4°F.
Combining with the humidity, the maximum feel-like temperature may increase and range between a blazing 86°F and a fiery hot 96.8°F.
Updated: Oct 18, 2026 @ 07:19:29 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, in Marco Island, a cloudy start will lead to a warm, sunny afternoon.

Today, the highest temperature will be 84.2°F, while the lowest temperature will be 71.6°F. The maximum heat index, which measures the combined effect of heat and moisture, is estimated at 93.2°F.
The maximum temperature will be in line with the average highest temperature of 86°F in October. The lowest temperature today will be also in line with the average low temperature.

On Sunday, in Marco Island, sunrise will be at 7:27 am and sunset at 6:56 pm (EDT).

In Marco Island, today, there will be 11h and 29min of daylight.