Weather forecast for 10 daysPort Saint Lucie, FL
Weather forecast for the weekend
Sunday Oct 18, 2026
- 82°F
- 73°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 19mphNE 41°
- Humidity: 67%
- UV index: 7
- Sunrise: 7:23 am EDT
- Sunset: 6:49 pm EDT
- details ▼
On Sunday, October 18, clouds and sunshine will create a dynamic sky throughout the day.
Day and night temperatures will present a subtle difference, from a maximum of a temperate 82.4°F to a minimum of a warm 73.4°F.
The maximum heat index, which adjusts the air temperature based on humidity, is calculated to be a blazing 86°F. Note that heat index values are valued for light wind and location in the shade.
Today's peak is predicted to reflect the usual October high temperature of 82.2°F.
Sunrise was at 7:23 am and sunset will be at 6:49 pm; the daylight will last for 11h and 27min.
Day and night temperatures will present a subtle difference, from a maximum of a temperate 82.4°F to a minimum of a warm 73.4°F.
The maximum heat index, which adjusts the air temperature based on humidity, is calculated to be a blazing 86°F. Note that heat index values are valued for light wind and location in the shade.
Today's peak is predicted to reflect the usual October high temperature of 82.2°F.
Sunrise was at 7:23 am and sunset will be at 6:49 pm; the daylight will last for 11h and 27min.
10-day overview
Daily temperatures
Warmest period: today - Friday 82°C.
Coldest period: Saturday - Tuesday 81°C.
Coldest period: Saturday - Tuesday 81°C.
Chance of precipitation
Highest chance: Saturday 51%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 82°F
- 73°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 19mphNE 41°
- Humidity: 67%
- UV index: 7
- Sunrise: 7:23 am EDT
- Sunset: 6:49 pm EDT
- details ▼
- Monday
- Oct 19, 2026
- 82°F
- 68°F
AM Showers
- Precip. probability: 36%
- Precipitation: 0.12"
- Wind: 18mphNE 43°
- Humidity: 70%
- UV index: 8
- Sunrise: 7:23 am EDT
- Sunset: 6:49 pm EDT
- details ▼
- Tuesday
- Oct 20, 2026
- 82°F
- 66°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 13mphNNE 19°
- Humidity: 66%
- UV index: 8
- Sunrise: 7:24 am EDT
- Sunset: 6:48 pm EDT
- details ▼
- Wednesday
- Oct 21, 2026
- 82°F
- 66°F
Partly Cloudy
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 12mphNNE 12°
- Humidity: 66%
- UV index: 8
- Sunrise: 7:24 am EDT
- Sunset: 6:47 pm EDT
- details ▼
- Thursday
- Oct 22, 2026
- 82°F
- 64°F
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 12mphNNE 13°
- Humidity: 64%
- UV index: 8
- Sunrise: 7:25 am EDT
- Sunset: 6:46 pm EDT
- details ▼
- Friday
- Oct 23, 2026
- 82°F
- 70°F
Mostly Sunny
- Precip. probability: 16%
- Precipitation: 0"
- Wind: 14mphNNE 23°
- Humidity: 64%
- UV index: 7
- Sunrise: 7:26 am EDT
- Sunset: 6:45 pm EDT
- details ▼
- Saturday
- Oct 24, 2026
- 81°F
- 70°F
Showers
- Precip. probability: 51%
- Precipitation: 0.28"
- Wind: 18mphNE 39°
- Humidity: 72%
- UV index: 7
- Sunrise: 7:26 am EDT
- Sunset: 6:44 pm EDT
- details ▼
- Sunday
- Oct 25, 2026
- 81°F
- 70°F
Showers / Wind
- Precip. probability: 50%
- Precipitation: 0.2"
- Wind: 21mphNE 37°
- Humidity: 71%
- UV index: 7
- Sunrise: 7:27 am EDT
- Sunset: 6:43 pm EDT
- details ▼
- Monday
- Oct 26, 2026
- 81°F
- 68°F
AM Showers
- Precip. probability: 42%
- Precipitation: 0.08"
- Wind: 19mphNNE 31°
- Humidity: 70%
- UV index: 7
- Sunrise: 7:27 am EDT
- Sunset: 6:42 pm EDT
- details ▼
- Tuesday
- Oct 27, 2026
- 81°F
- 70°F
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0"
- Wind: 16mphNNE 25°
- Humidity: 69%
- UV index: 7
- Sunrise: 7:28 am EDT
- Sunset: 6:41 pm EDT
- details ▼
cloud-filled, showery and mostly clear weather is forecasted.
Rain is anticipated on Monday, Saturday through next Monday.
The high temperatures are expected to remain largely stable throughout the coming week. The maximum temperature will vary between 80.6°F and 82.4°F, while the forecast minimum temperature falls between 64.4°F and 73.4°F.
Sunday through Friday, with the highest temperature of 82.4°F, will be the warmest days; the coldest days will be Saturday through next Tuesday, with a maximum of 80.6°F.
Rain is anticipated on Monday, Saturday through next Monday.
The high temperatures are expected to remain largely stable throughout the coming week. The maximum temperature will vary between 80.6°F and 82.4°F, while the forecast minimum temperature falls between 64.4°F and 73.4°F.
Sunday through Friday, with the highest temperature of 82.4°F, will be the warmest days; the coldest days will be Saturday through next Tuesday, with a maximum of 80.6°F.
Updated: Oct 18, 2026 @ 13:35:12 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
Today, patchy clouds will move across the sky, allowing for sunshine at times.
Today, the maximum temperature will be 82.4°F, while the minimum temperature will be 73.4°F. The maximum heat index, which adjusts the air temperature based on humidity, is assessed at 86°F.
The maximum temperature today will be in line with the average highest temperature in October. The lowest temperature will be also in line with the average low of 73.6°F.
The maximum temperature today will be in line with the average highest temperature in October. The lowest temperature will be also in line with the average low of 73.6°F.
On Sunday, in Port Saint Lucie, sunrise was at 7:23 am and sunset will be at 6:49 pm (EDT).
In Port Saint Lucie, the length of the day today will be 11h and 27min.





