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Port St. Lucie, Florida weather · now

90°

Mostly Cloudy

Feels
108°
High / Low
94° / 75°
Wind
37 mph E
Humidity
75%
No precipitation expected in the next 1.5 hours.

Precipitation · next 12 hrs

Peak 21% · 4 PM

12 PM
·
·
3 PM
·
·
6 PM
·
·
9 PM
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11 PM
GoodAir quality PollenTreeNoneGrassModerateWeedModerate
Sun 6:50 AM 8:02 PM 13h 12m
Moon Waning Crescent 3% lit

Current weather and 7-day forecast for Port St. Lucie, Florida, sourced directly from the National Weather Service. Expect mostly sunny then slight chance showers and thunderstorms today. Today's high is 94° with a low near 75°. 2 active weather alerts in effect.

What to wear today

Loose, light, and water nearby

94°F — wear breathable fabrics and stay hydrated.

Next 24 hours

70° 85° 100° 93° 75° 11 AM 2 PM 5 PM 8 PM 11 PM 2 AM 5 AM 8 AM
  1. 11 AM

    90°

    2%

  2. 1 PM

    93°

    4%

  3. 3 PM

    92°

    16%

  4. 5 PM

    91°

    19%

  5. 7 PM

    88°

    15%

  6. 9 PM

    83°

    6%

  7. 11 PM

    81°

    4%

  8. 1 AM

    79°

    5%

  9. 3 AM

    77°

    1%

  10. 5 AM

    77°

    3%

  11. 7 AM

    75°

    5%

  12. 9 AM

    82°

    2%

Live radar

View full radar →

7 days

  1. Today 8/11 Mostly Sunny then Slight Chance Showers And Thunderstorms 21% 94° · 75°
    1. 12 PM 92° Sunny 3%
    2. 1 PM 93° Sunny 4%
    3. 2 PM 93° Mostly Sunny 12%
    4. 3 PM 92° Slight Chance Showers And Thunderstorms 16%
    5. 4 PM 93° Slight Chance Showers And Thunderstorms 21%
    6. 5 PM 91° Slight Chance Showers And Thunderstorms 19%
    7. 6 PM 90° Slight Chance Showers And Thunderstorms 17%
    8. 7 PM 88° Slight Chance Showers And Thunderstorms 15%
    9. 8 PM 85° Mostly Clear 7%
    10. 9 PM 83° Mostly Clear 6%
    11. 10 PM 82° Mostly Clear 3%
    12. 11 PM 81° Mostly Clear 4%
  2. Wed 8/12 Sunny then Chance Showers And Thunderstorms 34% 95° · 75°
    1. 12 AM 79° Mostly Clear 3%
    2. 1 AM 79° Mostly Clear 5%
    3. 2 AM 78° Mostly Clear 2%
    4. 3 AM 77° Mostly Clear 1%
    5. 4 AM 77° Mostly Clear 2%
    6. 5 AM 77° Mostly Clear 3%
    7. 6 AM 77° Sunny 3%
    8. 7 AM 75° Sunny 5%
    9. 8 AM 78° Sunny 4%
    10. 9 AM 82° Sunny 2%
    11. 10 AM 87° Sunny 2%
    12. 11 AM 89° Sunny 4%
    13. 12 PM 92° Sunny 9%
    14. 1 PM 93° Mostly Sunny 12%
    15. 2 PM 93° Chance Showers And Thunderstorms 31%
    16. 3 PM 93° Chance Showers And Thunderstorms 34%
    17. 4 PM 93° Chance Showers And Thunderstorms 32%
    18. 5 PM 90° Chance Showers And Thunderstorms 30%
    19. 6 PM 89° Chance Showers And Thunderstorms 30%
    20. 7 PM 88° Chance Showers And Thunderstorms 33%
    21. 8 PM 84° Partly Cloudy 5%
    22. 9 PM 82° Partly Cloudy 5%
    23. 10 PM 81° Mostly Clear 5%
    24. 11 PM 80° Mostly Clear 5%
  3. Thu 8/13 Sunny then Chance Showers And Thunderstorms 40% 94° · 75°
    1. 12 AM 79° Mostly Clear 5%
    2. 1 AM 79° Mostly Clear 5%
    3. 2 AM 78° Mostly Clear 2%
    4. 3 AM 78° Mostly Clear 2%
    5. 4 AM 77° Mostly Clear 2%
    6. 5 AM 77° Mostly Clear 2%
    7. 6 AM 77° Sunny 2%
    8. 7 AM 78° Sunny 2%
    9. 8 AM 78° Sunny 8%
    10. 9 AM 82° Sunny 8%
    11. 10 AM 85° Sunny 8%
    12. 11 AM 89° Sunny 8%
    13. 12 PM 90° Sunny 8%
    14. 1 PM 91° Sunny 8%
    15. 2 PM 92° Chance Showers And Thunderstorms 40%
    16. 3 PM 91° Chance Showers And Thunderstorms 40%
    17. 4 PM 91° Chance Showers And Thunderstorms 40%
    18. 5 PM 90° Chance Showers And Thunderstorms 40%
    19. 6 PM 88° Chance Showers And Thunderstorms 40%
    20. 7 PM 86° Chance Showers And Thunderstorms 40%
    21. 8 PM 84° Partly Cloudy 3%
    22. 9 PM 82° Partly Cloudy 3%
    23. 10 PM 81° Mostly Clear 3%
    24. 11 PM 80° Mostly Clear 3%
  4. Fri 8/14 Sunny then Chance Showers And Thunderstorms 28% 93° · 76°
    1. 12 AM 79° Mostly Clear 3%
    2. 1 AM 78° Mostly Clear 3%
    3. 2 AM 77° Mostly Clear 1%
    4. 3 AM 77° Mostly Clear 1%
    5. 4 AM 76° Mostly Clear 1%
    6. 5 AM 76° Mostly Clear 1%
    7. 6 AM 76° Sunny 1%
    8. 7 AM 77° Sunny 1%
    9. 8 AM 78° Sunny 4%
    10. 9 AM 82° Sunny 4%
    11. 10 AM 86° Sunny 4%
    12. 11 AM 90° Sunny 4%
    13. 12 PM 92° Sunny 4%
    14. 1 PM 92° Mostly Sunny 4%
    15. 2 PM 92° Chance Showers And Thunderstorms 28%
    16. 3 PM 92° Chance Showers And Thunderstorms 28%
    17. 4 PM 91° Chance Showers And Thunderstorms 28%
    18. 5 PM 90° Chance Showers And Thunderstorms 28%
    19. 6 PM 88° Chance Showers And Thunderstorms 28%
    20. 7 PM 85° Chance Showers And Thunderstorms 28%
    21. 8 PM 85° Mostly Clear 2%
    22. 9 PM 84° Mostly Clear 2%
    23. 10 PM 82° Mostly Clear 2%
    24. 11 PM 81° Mostly Clear 2%
  5. Sat 8/15 Chance Showers And Thunderstorms 30% 93° · 75°
    1. 12 AM 80° Mostly Clear 2%
    2. 1 AM 79° Mostly Clear 2%
    3. 2 AM 78° Clear 3%
    4. 3 AM 77° Clear 3%
    5. 4 AM 77° Clear 3%
    6. 5 AM 77° Clear 3%
    7. 6 AM 77° Sunny 3%
    8. 7 AM 78° Sunny 3%
    9. 8 AM 79° Slight Chance Showers And Thunderstorms 20%
    10. 9 AM 82° Slight Chance Showers And Thunderstorms 20%
    11. 10 AM 86° Slight Chance Showers And Thunderstorms 20%
    12. 11 AM 89° Slight Chance Showers And Thunderstorms 20%
    13. 12 PM 90° Slight Chance Showers And Thunderstorms 20%
    14. 1 PM 91° Slight Chance Showers And Thunderstorms 20%
    15. 2 PM 91° Chance Showers And Thunderstorms 30%
    16. 3 PM 91° Chance Showers And Thunderstorms 30%
    17. 4 PM 92° Chance Showers And Thunderstorms 30%
    18. 5 PM 91° Chance Showers And Thunderstorms 30%
    19. 6 PM 90° Chance Showers And Thunderstorms 30%
    20. 7 PM 88° Chance Showers And Thunderstorms 30%
    21. 8 PM 86° Mostly Clear 1%
    22. 9 PM 84° Mostly Clear 1%
    23. 10 PM 82° Mostly Clear 1%
    24. 11 PM 80° Mostly Clear 1%
  6. Sun 8/16 Sunny 7% 94° · 75°
    1. 12 AM 79° Mostly Clear 1%
    2. 1 AM 78° Mostly Clear 1%
    3. 2 AM 78° Clear
    4. 3 AM 77° Clear
    5. 4 AM 77° Clear
    6. 5 AM 77° Clear
    7. 6 AM 77° Sunny
    8. 7 AM 77° Sunny
    9. 8 AM 78° Sunny 1%
    10. 9 AM 81° Sunny 1%
    11. 10 AM 85° Sunny 1%
    12. 11 AM 89° Sunny 1%
    13. 12 PM 91° Sunny 1%
    14. 1 PM 92° Sunny 1%
    15. 2 PM 93° Mostly Sunny 7%
    16. 3 PM 94° Mostly Sunny 7%
    17. 4 PM 94° Mostly Sunny 7%
    18. 5 PM 93° Mostly Sunny 7%
    19. 6 PM 91° Partly Cloudy 7%
    20. 7 PM 89° Partly Cloudy 7%
    21. 8 PM 86° Mostly Clear 2%
    22. 9 PM 84° Mostly Clear 2%
    23. 10 PM 82° Mostly Clear 2%
    24. 11 PM 80° Mostly Clear 2%
  7. Mon 8/17 Sunny then Slight Chance Showers And Thunderstorms 20% 94° · 76°
    1. 12 AM 79° Mostly Clear 2%
    2. 1 AM 78° Mostly Clear 2%
    3. 2 AM 78° Mostly Clear 2%
    4. 3 AM 77° Mostly Clear 2%
    5. 4 AM 77° Mostly Clear 2%
    6. 5 AM 77° Mostly Clear 2%
    7. 6 AM 77° Sunny 2%
    8. 7 AM 77° Sunny 2%
    9. 8 AM 78° Sunny 5%
    10. 9 AM 81° Sunny 5%
    11. 10 AM 85° Sunny 5%
    12. 11 AM 89° Sunny 5%
    13. 12 PM 91° Sunny 5%
    14. 1 PM 92° Sunny 5%
    15. 2 PM 92° Slight Chance Showers And Thunderstorms 20%
    16. 3 PM 93° Slight Chance Showers And Thunderstorms 20%
    17. 4 PM 93° Slight Chance Showers And Thunderstorms 20%
    18. 5 PM 93° Slight Chance Showers And Thunderstorms 20%
    19. 6 PM 91° Slight Chance Showers And Thunderstorms 20%
    20. 7 PM 89° Slight Chance Showers And Thunderstorms 20%
    21. 8 PM 86° Partly Cloudy 6%
    22. 9 PM 84° Partly Cloudy 6%
    23. 10 PM 82° Partly Cloudy 6%
Extended outlook days 8–16
  1. Tue 8/18 Drizzle 22% 91° · 76°
  2. Wed 8/19 Rain Showers 28% 95° · 73°
  3. Thu 8/20 Thunderstorms 40% 92° · 75°
  4. Fri 8/21 Drizzle 36% 92° · 76°
  5. Sat 8/22 Cloudy 43% 91° · 79°
  6. Sun 8/23 Drizzle 47% 92° · 77°
  7. Mon 8/24 Cloudy 55% 93° · 76°
  8. Tue 8/25 Thunderstorms 58% 92° · 75°
  9. Wed 8/26 Rain Showers 56% 91° · 77°

Days 8+ from the Open-Meteo multi-model ensemble — treat as a guide; accuracy drops past day 7.

Best day this week

Mild temps, low rain chance, clearer skies.

Sunday, 8/16

Sunny, 94° / 75°

  1. Tomorrow95°75°
  2. Thu94°75°
  3. Fri93°76°
  4. Sat93°75°
  5. Sun94°75°
  6. Mon94°76°

Best time to head outside

Picks the upcoming daytime hour with the most favorable conditions for each activity. Factors in temperature, wind, precipitation timing, and pollen.

Climate normals

What weather to expect in Port St. Lucie

Port St. Lucie in August typically averages 90° highs and 76° lows, with about 29 days of rain. The hottest stretch is July (average high 92°); the coldest is January (average low 54°).

MonthAvg highAvg lowRainy days
Jan72°54°11
Feb77°57°10
Mar80°62°16
Apr82°68°13
May89°73°25
Jun90°75°27
Jul92°75°25
Aug90°76°29
Sep87°74°29
Oct82°72°23
Nov80°63°11
Dec77°61°12

Normals derived from the past two years of observations via Open-Meteo's historical archive.

Detailed forecast (NWS)

Today
A slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 94. Heat index values as high as 107. East southeast wind 0 to 5 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms after 2pm. Sunny. High near 95, with temperatures falling to around 90 in the afternoon. Heat index values as high as 106. West wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Thursday
A chance of showers and thunderstorms after 2pm. Sunny, with a high near 94. Southeast wind 0 to 5 mph. Chance of precipitation is 40%.
Friday
A chance of showers and thunderstorms after 2pm. Sunny, with a high near 93. South southeast wind 0 to 10 mph. Chance of precipitation is 30%.

Forecast details

NWS gridpoint
MLB 71,18
Radar station
KMLB
Time zone
America/New_York
Coordinates
27.294, -80.350