Weather forecast for 10 daysSebastian, FL

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 84°F
  • 73°F
Thundershowers
Thundershowers
  • Precip. probability: 80%
  • Precipitation: 0.24"
  • Wind: 19mphN 0°
  • Humidity: 83%
  • UV index: 2
  • Sunrise: 7:23 am EDT
  • Sunset: 6:50 pm EDT
  • ▼
Today, on Saturday, October 17, occasional thunder-related rain is expected.
The chance of rainfall is high. However, precipitation will be light. Temperature span will be from a high of a temperate 84.2°F to a low of a moderately hot 73.4°F.
The maximum heat index, which represents the influence of relative humidity on air temperature, is computed to be a fiery hot 95°F. Take into consideration that the heat index values are calculated for shade and light wind conditions. Bear in mind that direct sunshine exposure increases weather impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees.
Today's high is forecasted to coincide with the typical October maximum of 81.3°F.
Sunrise was at 7:23 am and sunset will be at 6:50 pm; the daylight will last for 11h and 28min.

Sunday Oct 18, 2026

  • 81°F
  • 73°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 24%
  • Precipitation: 0.04"
  • Wind: 22mphNE 35°
  • Humidity: 67%
  • UV index: 8
  • Sunrise: 7:23 am EDT
  • Sunset: 6:49 pm EDT
  • ▼
Tomorrow, on Sunday, October 18, partly cloudy skies will be paired with frequent wind gusts.
Minimal precipitation is expected. Minor temperature shifts from a high of a warm 80.6°F to a low of a moderately hot 73.4°F are forecasted.
The maximum heat index, which indicates how humid air affects the felt temperature, is appraised at 84.2°F.
The highest temperature is expected to reflect October's average of 81.3°F.
Sunrise will be at 7:23 am and sunset at 6:49 pm; tomorrow's daylight will last for 11h and 26min.

10-day overview

Daily temperatures

Warmest day: today 84°C.
Minimum temperature: 81°C.

Chance of precipitation

Highest chance: today 80%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 84°F
  • 73°F
Thundershowers
Thundershowers
  • Precip. probability: 80%
  • Precipitation: 0.24"
  • Wind: 19mphN 0°
  • Humidity: 83%
  • UV index: 2
  • Sunrise: 7:23 am EDT
  • Sunset: 6:50 pm EDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 81°F
  • 73°F
Partly Cloudy / Wind
Partly Cloudy / Wind
  • Precip. probability: 24%
  • Precipitation: 0.04"
  • Wind: 22mphNE 35°
  • Humidity: 67%
  • UV index: 8
  • Sunrise: 7:23 am EDT
  • Sunset: 6:49 pm EDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 81°F
  • 70°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 19mphNE 38°
  • Humidity: 68%
  • UV index: 7
  • Sunrise: 7:24 am EDT
  • Sunset: 6:49 pm EDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 81°F
  • 68°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 16mphNNE 18°
  • Humidity: 63%
  • UV index: 8
  • Sunrise: 7:25 am EDT
  • Sunset: 6:48 pm EDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 82°F
  • 66°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 14mphN 10°
  • Humidity: 64%
  • UV index: 7
  • Sunrise: 7:25 am EDT
  • Sunset: 6:47 pm EDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 81°F
  • 64°F
Sunny
Sunny
  • Precip. probability: 10%
  • Precipitation: 0"
  • Wind: 14mphN 3°
  • Humidity: 61%
  • UV index: 7
  • Sunrise: 7:26 am EDT
  • Sunset: 6:46 pm EDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 82°F
  • 66°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 9%
  • Precipitation: 0.04"
  • Wind: 13mphNNE 15°
  • Humidity: 59%
  • UV index: 7
  • Sunrise: 7:27 am EDT
  • Sunset: 6:45 pm EDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 81°F
  • 68°F
Showers
Showers
  • Precip. probability: 38%
  • Precipitation: 0.2"
  • Wind: 17mphNNE 27°
  • Humidity: 70%
  • UV index: 7
  • Sunrise: 7:27 am EDT
  • Sunset: 6:44 pm EDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 81°F
  • 68°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 18mphNNE 22°
  • Humidity: 67%
  • UV index: 7
  • Sunrise: 7:28 am EDT
  • Sunset: 6:43 pm EDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 81°F
  • 68°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 16mphNNE 15°
  • Humidity: 64%
  • UV index: 7
  • Sunrise: 7:28 am EDT
  • Sunset: 6:42 pm EDT
  • ▼
And a mix of overcast, sun-filled, thunderstorm-prone and wet weather is predicted.
Rainfall is predicted for Saturday, Sunday and next Saturday.
The variation in maximum temperature will be negligible throughout the coming week. Expected highs will hover between 80.6°F and 84.2°F, while nighttime temperatures are expected to vary from 64.4°F to 73.4°F.
Today is the hottest day, with a maximum temperature of 84.2°F; on nearly all remaining days, the highest temperature is expected to stay at 80.6°F.
Including the humidity's impact, the maximum feel-like temperature may increase considerably and range between 82.4°F and a fiery hot 95°F.
Updated: Oct 17, 2026 @ 17:56:53 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, in Sebastian, expect a chance of wet weather with thunder.

With a probability of 80%, light precipitation of 0.24" is predicted in Sebastian.

Today, the maximum temperature will be 84.2°F, while the minimum temperature will be 73.4°F. The maximum heat index, which calculates the temperature value influenced by the moisture in the air, is calculated to be 95°F.
The highest temperature will be in line with the average maximum of 81.3°F in October. The lowest temperature today will be also in line with the average low temperature.

On Saturday, in Sebastian, sunrise was at 7:23 am and sunset will be at 6:50 pm (EDT).

In Sebastian, the length of the day today will be 11h and 28min.

Tomorrow, in Sebastian, occasional gusty winds will sweep through a partly cloudy sky.

Tomorrow, there is a low chance of minimal precipitation in Sebastian.

Tomorrow, the highest temperature will be 80.6°F, while the lowest temperature will be 73.4°F. The maximum heat index, which modifies the air temperature to account for humidity, is estimated at 84.2°F.
The maximum temperature will be in line with the average highest temperature of 81.3°F in October. Tomorrow, the lowest temperature will be also in line with the average low temperature.

On Sunday, in Sebastian, sunrise will be at 7:23 am and sunset at 6:49 pm (EDT).

In Sebastian, tomorrow, there will be 11h and 26min of daylight.