Port St. Lucie 7-day weather forecast

Written by:
March 23, 2026
ESOlex // Shutterstock

Port St. Lucie 7-day weather forecast

Stacker created the forecast for Port St. Lucie, Florida using data from OpenWeather. This week's high is 86 °F on Sunday, while the low is 75 °F on Thursday. There are expected to be 3 sunny days and rain on 6 days this week.

There are currently no weather alerts.

Monday, May 18

- High of 84 °F, low of 78 °F (68% humidity)
- Partly cloudy with a 100% chance of rain (4 mm of rain)
- Very high risk of harm from sun exposure (10 UV index)
- Moderate breeze (15 mph wind)
- Sunrise at 6:31 AM, sunset at 8:04 PM
You may also like: Highest-paying jobs in Port St. Lucie that require a graduate degree
1 / 6
supergenijalac // Shutterstock

Tuesday, May 19

- High of 83 °F, low of 77 °F (68% humidity)
- Fair with a 100% chance of rain (6 mm of rain)
- Very high risk of harm from sun exposure (11 UV index)
- Moderate breeze (16 mph wind)
- Sunrise at 6:31 AM, sunset at 8:04 PM
2 / 6
AnnaElizabeth photography // Shutterstock

Wednesday, May 20

- High of 85 °F, low of 76 °F (57% humidity)
- Partly cloudy with a 56% chance of rain (0 mm of rain)
- Very high risk of harm from sun exposure (10 UV index)
- Moderate breeze (13 mph wind)
- Sunrise at 6:30 AM, sunset at 8:05 PM
3 / 6
ESOlex // Shutterstock

Thursday, May 21

- High of 84 °F, low of 75 °F (62% humidity)
- Partly cloudy with a 90% chance of rain (1 mm of rain)
- Very high risk of harm from sun exposure (10 UV index)
- Moderate breeze (14 mph wind)
- Sunrise at 6:30 AM, sunset at 8:06 PM
4 / 6
John Cartwright // Shutterstock

Friday, May 22

- High of 83 °F, low of 76 °F (58% humidity)
- Mostly cloudy with a 0% chance of rain
- Gentle breeze (12 mph wind)
- Sunrise at 6:29 AM, sunset at 8:06 PM
5 / 6
Witaya Proadtayakogool // Shutterstock

Saturday, May 23

- High of 84 °F, low of 75 °F (64% humidity)
- Mostly sunny with a 100% chance of rain (3 mm of rain)
- Gentle breeze (11 mph wind)
- Sunrise at 6:29 AM, sunset at 8:07 PM
- First quarter moon
You may also like: Highest-paying jobs in Port St. Lucie for high school graduates
6 / 6
cooperr // Shutterstock

Sunday, May 24

- High of 86 °F, low of 75 °F (61% humidity)
- Fair with a 100% chance of rain (5 mm of rain)
- Moderate breeze (14 mph wind)
- Sunrise at 6:29 AM, sunset at 8:07 PM

Trending Now