Weather forecast for 10 daysMarco Island, FL
Weather forecast for the weekend
Sunday Oct 18, 2026
- 84°F
- 72°F
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
- details ▼
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.
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.
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
- Precip. probability: 20%
- Precipitation: 0"
- Wind: 19mphNE 39°
- Humidity: 75%
- UV index: 8
- Sunrise: 7:27 am EDT
- Sunset: 6:56 pm EDT
- details ▼
- Monday
- Oct 19, 2026
- 88°F
- 68°F
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
- details ▼
- Tuesday
- Oct 20, 2026
- 84°F
- 66°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 14mphNNE 33°
- Humidity: 64%
- UV index: 8
- Sunrise: 7:28 am EDT
- Sunset: 6:54 pm EDT
- details ▼
- Wednesday
- Oct 21, 2026
- 84°F
- 66°F
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
- details ▼
- Thursday
- Oct 22, 2026
- 84°F
- 66°F
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
- details ▼
- Friday
- Oct 23, 2026
- 84°F
- 68°F
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
- details ▼
- Saturday
- Oct 24, 2026
- 84°F
- 68°F
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
- details ▼
- Sunday
- Oct 25, 2026
- 82°F
- 68°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 18mphNNE 32°
- Humidity: 67%
- UV index: 8
- Sunrise: 7:31 am EDT
- Sunset: 6:50 pm EDT
- details ▼
- Monday
- Oct 26, 2026
- 82°F
- 68°F
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
- details ▼
- Tuesday
- Oct 27, 2026
- 82°F
- 68°F
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
- details ▼
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.
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
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.
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.





