Weather forecast for 10 daysMyrtle Island, FL

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 73°F
  • 66°F
Cloudy
Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 16mphNNE 30°
  • Humidity: 69%
  • UV index: 5
  • Sunrise: 7:29 am EDT
  • Sunset: 6:52 pm EDT
  • ▼
Today, overcast skies are expected.
The highest daytime temperature will reach a moderately hot 73.4°F, creating a slight contrast with the anticipated nighttime low of a breezy 66.2°F.
Today, the colder forecast high of 73.4°F matches November's pattern over October's.
Sunrise will be at 7:29 am and sunset at 6:52 pm; the daylight will last for 11h and 23min.

10-day overview

Daily temperatures

Warmest day: Wednesday 81°C.
Coldest period: today - tomorrow 73°C.

Chance of precipitation

Highest chance: Saturday 46%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 73°F
  • 66°F
Cloudy
Cloudy
  • Precip. probability: 21%
  • Precipitation: 0"
  • Wind: 16mphNNE 30°
  • Humidity: 69%
  • UV index: 5
  • Sunrise: 7:29 am EDT
  • Sunset: 6:52 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 73°F
  • 55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 13mphNNE 17°
  • Humidity: 70%
  • UV index: 7
  • Sunrise: 7:30 am EDT
  • Sunset: 6:51 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 77°F
  • 55°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 11mphN 1°
  • Humidity: 63%
  • UV index: 7
  • Sunrise: 7:30 am EDT
  • Sunset: 6:50 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 81°F
  • 54°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 11mphN 6°
  • Humidity: 63%
  • UV index: 7
  • Sunrise: 7:31 am EDT
  • Sunset: 6:49 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 79°F
  • 55°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 9mphN 359°
  • Humidity: 59%
  • UV index: 7
  • Sunrise: 7:32 am EDT
  • Sunset: 6:48 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 79°F
  • 64°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0.04"
  • Wind: 11mphNNE 13°
  • Humidity: 61%
  • UV index: 7
  • Sunrise: 7:32 am EDT
  • Sunset: 6:47 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 75°F
  • 64°F
Showers
Showers
  • Precip. probability: 46%
  • Precipitation: 0.2"
  • Wind: 15mphNNE 28°
  • Humidity: 75%
  • UV index: 7
  • Sunrise: 7:33 am EDT
  • Sunset: 6:46 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 75°F
  • 63°F
Showers
Showers
  • Precip. probability: 45%
  • Precipitation: 0.12"
  • Wind: 16mphNNE 21°
  • Humidity: 71%
  • UV index: 7
  • Sunrise: 7:34 am EDT
  • Sunset: 6:45 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 75°F
  • 61°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 13mphNNE 14°
  • Humidity: 68%
  • UV index: 6
  • Sunrise: 7:34 am EDT
  • Sunset: 6:44 pm EDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 77°F
  • 63°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 16%
  • Precipitation: 0"
  • Wind: 12mphN 10°
  • Humidity: 68%
  • UV index: 6
  • Sunrise: 7:35 am EDT
  • Sunset: 6:43 pm EDT
  • ▼
Looking ahead, conditions suggest a period of cloudy, dry and sunny and rain-soaked weather is expected.
Rainfall is expected on Saturday and next Sunday.
In the upcoming days, the highest temperature will vary between 73.4°F and 80.6°F, while the fluctuation in night temperatures will be significant, as the overnight lows will vary from 53.6°F to 66.2°F.
With the highest temperature of 80.6°F, Wednesday will be the warmest day; with a maximum temperature of 73.4°F, Sunday and Monday will be the coldest days.
Updated: Oct 18, 2026 @ 07:19:20 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, cloud coverage will be extensive.

Today, the highest temperature will be 73.4°F, while the lowest temperature will be 66.2°F.
Today, the highest temperature will be significantly lower than the average maximum of 82.9°F in October. The lowest temperature today will be in line with the average low temperature.

On Sunday, in Myrtle Island, sunrise will be at 7:29 am and sunset at 6:52 pm (EDT).

In Myrtle Island, today, there will be 11h and 23min of daylight.