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Now · 10:17 PM

Port St. Lucie Weather & Hourly Forecast

United States · Florida · 34987

76°F

Mostly cloudy night

Feels like: 85°F

💧 Humidity 99% 🌡 Pressure 30.00 inHg 💨 Wind 2 mph 👁 Visibility 13.0 mi ☁ Clouds 87% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Port St. Lucie

Today

11:00 PM

Overcast night

76° 💧 0.000 in 💨 4 mph H 97%30.03 inHg

Tomorrow

2:00 AM

Mostly cloudy night

76° 💧 None 💨 2 mph H 99%30.00 inHg

5:00 AM

Overcast night

75° 💧 None 💨 2 mph H 99%29.97 inHg

8:00 AM

Fog

75° 💧 0.003 in 💨 1 mph H 99%30.00 inHg

11:00 AM

Mostly cloudy

85° 💧 0.153 in 💨 2 mph H 77%30.03 inHg

2:00 PM

Thunderstorms

76° 💧 0.273 in 💨 6 mph H 97%30.06 inHg

5:00 PM

Light rain

81° 💧 0.010 in 💨 4 mph H 88%30.00 inHg

8:00 PM

Overcast night

78° 💧 None 💨 2 mph H 92%30.03 inHg

11:00 PM

Overcast night

77° 💧 None 💨 5 mph H 94%30.06 inHg

Sunday

2:00 AM

Clear night

75° 💧 None 💨 4 mph H 97%30.03 inHg

5:00 AM

Mostly clear night

74° 💧 None 💨 2 mph H 99%30.00 inHg

8:00 AM

Fog

76° 💧 0.001 in 💨 3 mph H 99%30.06 inHg

11:00 AM

Light rain

85° 💧 0.011 in 💨 1 mph H 76%30.09 inHg

2:00 PM

Light thunderstorms

86° 💧 0.392 in 💨 3 mph H 79%30.03 inHg

5:00 PM

Light thunderstorms

78° 💧 0.157 in 💨 7 mph H 93%30.00 inHg

8:00 PM

Mostly cloudy night

77° 💧 0.003 in 💨 3 mph H 97%30.03 inHg

Today

11:00 PM

Overcast night

76° 💧 0.000 in 💨 4 mph H 97%30.03 inHg

Tomorrow

12:00 AM

Partly cloudy night

76° 💧 None 💨 5 mph H 97%30.00 inHg

1:00 AM

Mostly cloudy night

76° 💧 None 💨 3 mph H 98%30.03 inHg

2:00 AM

Mostly cloudy night

76° 💧 None 💨 2 mph H 99%30.00 inHg

3:00 AM

Mist at night

75° 💧 None 💨 0 mph H 100%29.97 inHg

4:00 AM

Mostly cloudy night

75° 💧 None 💨 1 mph H 99%29.97 inHg

5:00 AM

Overcast night

75° 💧 None 💨 2 mph H 99%29.97 inHg

6:00 AM

Mist at night

75° 💧 None 💨 3 mph H 100%29.97 inHg

7:00 AM

Fog at night

74° 💧 None 💨 1 mph H 100%30.00 inHg

8:00 AM

Fog

75° 💧 None 💨 1 mph H 99%30.00 inHg

9:00 AM

Mostly cloudy

79° 💧 None 💨 1 mph H 97%30.03 inHg

10:00 AM

Overcast

82° 💧 0.003 in 💨 2 mph H 84%30.03 inHg

11:00 AM

Mostly cloudy

85° 💧 0.002 in 💨 2 mph H 77%30.03 inHg

12:00 PM

Overcast

87° 💧 0.001 in 💨 3 mph H 74%30.03 inHg

1:00 PM

Thunderstorms

80° 💧 0.149 in 💨 9 mph H 89%30.06 inHg

2:00 PM

Thunderstorms

76° 💧 0.175 in 💨 6 mph H 97%30.06 inHg

3:00 PM

Light rain

78° 💧 0.064 in 💨 3 mph H 95%30.03 inHg

4:00 PM

Light rain

79° 💧 0.035 in 💨 5 mph H 92%30.00 inHg

5:00 PM

Light rain

81° 💧 0.010 in 💨 4 mph H 88%30.00 inHg

6:00 PM

Overcast

81° 💧 None 💨 4 mph H 88%30.00 inHg

7:00 PM

Overcast

80° 💧 None 💨 4 mph H 89%30.00 inHg

8:00 PM

Overcast night

78° 💧 None 💨 2 mph H 92%30.03 inHg

9:00 PM

Overcast night

78° 💧 None 💨 4 mph H 93%30.03 inHg

10:00 PM

Overcast night

77° 💧 None 💨 4 mph H 94%30.03 inHg

11:00 PM

Overcast night

77° 💧 None 💨 5 mph H 94%30.06 inHg

Sunday

12:00 AM

Mostly cloudy night

76° 💧 None 💨 4 mph H 95%30.03 inHg

1:00 AM

Partly cloudy night

76° 💧 None 💨 4 mph H 95%30.03 inHg

2:00 AM

Clear night

75° 💧 None 💨 4 mph H 97%30.03 inHg

3:00 AM

Clear night

75° 💧 None 💨 3 mph H 98%30.03 inHg

4:00 AM

Clear night

74° 💧 None 💨 2 mph H 98%30.00 inHg

5:00 AM

Mostly clear night

74° 💧 None 💨 2 mph H 99%30.00 inHg

6:00 AM

Mist at night

74° 💧 None 💨 2 mph H 100%30.03 inHg

7:00 AM

Fog at night

74° 💧 None 💨 1 mph H 100%30.03 inHg

8:00 AM

Fog

76° 💧 None 💨 3 mph H 99%30.06 inHg

9:00 AM

Fog

80° 💧 None 💨 2 mph H 94%30.06 inHg

10:00 AM

Mostly sunny

83° 💧 0.001 in 💨 2 mph H 84%30.06 inHg

11:00 AM

Light rain

85° 💧 0.005 in 💨 1 mph H 76%30.09 inHg

12:00 PM

Mostly cloudy

87° 💧 0.002 in 💨 0 mph H 75%30.09 inHg

1:00 PM

Light thunderstorms

88° 💧 0.004 in 💨 1 mph H 74%30.06 inHg

2:00 PM

Light thunderstorms

86° 💧 0.025 in 💨 3 mph H 79%30.03 inHg

3:00 PM

Thunderstorms

78° 💧 0.256 in 💨 3 mph H 94%30.03 inHg

4:00 PM

Thunderstorms

78° 💧 0.111 in 💨 4 mph H 90%30.00 inHg

5:00 PM

Light thunderstorms

78° 💧 0.065 in 💨 7 mph H 93%30.00 inHg

6:00 PM

Light thunderstorms

77° 💧 0.079 in 💨 3 mph H 94%30.03 inHg

7:00 PM

Light rain

77° 💧 0.013 in 💨 2 mph H 95%30.00 inHg

8:00 PM

Mostly cloudy night

77° 💧 0.003 in 💨 3 mph H 97%30.03 inHg

9:00 PM

Mostly cloudy night

76° 💧 0.001 in 💨 4 mph H 97%30.03 inHg

10:00 PM

Mostly clear night

75° 💧 None 💨 2 mph H 97%30.06 inHg

11:00 PM

Clear night

75° 💧 None 💨 2 mph H 98%30.06 inHg

Monday

12:00 AM

Partly cloudy night

74° 💧 None 💨 1 mph H 99%30.06 inHg

1:00 AM

Partly cloudy night

74° 💧 None 💨 1 mph H 100%30.06 inHg

2:00 AM

Fog at night

74° 💧 None 💨 2 mph H 100%30.03 inHg

3:00 AM

Fog at night

74° 💧 None 💨 1 mph H 100%30.03 inHg

4:00 AM

Fog at night

74° 💧 None 💨 1 mph H 100%30.00 inHg

5:00 AM

Fog at night

74° 💧 None 💨 2 mph H 100%30.00 inHg

6:00 AM

Fog at night

74° 💧 None 💨 3 mph H 100%30.03 inHg

7:00 AM

Fog at night

74° 💧 None 💨 2 mph H 100%30.03 inHg

8:00 AM

Fog

75° 💧 None 💨 2 mph H 100%30.03 inHg

5:00 PM

Light rain

82° 💧 None 💨 3 mph H 88%29.97 inHg

8:00 PM

Light rain

77° 💧 None 💨 5 mph H 99%30.03 inHg

11:00 PM

Overcast night

75° 💧 None 💨 2 mph H 99%30.03 inHg

Tuesday

2:00 AM

Overcast night

75° 💧 None 💨 2 mph H 100%30.00 inHg

5:00 AM

Mostly cloudy night

74° 💧 None 💨 2 mph H 100%30.00 inHg

8:00 AM

Overcast

75° 💧 None 💨 4 mph H 100%30.06 inHg

11:00 AM

Partly cloudy

84° 💧 None 💨 6 mph H 83%30.09 inHg

2:00 PM

Light rain

84° 💧 None 💨 8 mph H 80%30.06 inHg

5:00 PM

Light rain

82° 💧 None 💨 6 mph H 85%30.03 inHg

8:00 PM

Mostly clear night

78° 💧 None 💨 3 mph H 92%30.03 inHg

11:00 PM

Mostly clear night

77° 💧 None 💨 4 mph H 94%30.06 inHg

Wednesday

2:00 AM

Mostly clear night

76° 💧 None 💨 3 mph H 95%30.03 inHg

5:00 AM

Mostly clear night

75° 💧 None 💨 3 mph H 96%30.03 inHg

8:00 AM

Light rain

77° 💧 None 💨 8 mph H 96%30.06 inHg

11:00 AM

Partly cloudy

82° 💧 None 💨 9 mph H 77%30.09 inHg

2:00 PM

Mostly cloudy

85° 💧 None 💨 9 mph H 76%30.06 inHg

5:00 PM

Moderate rain

77° 💧 None 💨 10 mph H 91%30.06 inHg

8:00 PM

Partly cloudy night

76° 💧 None 💨 6 mph H 94%30.03 inHg

11:00 PM

Mostly cloudy night

76° 💧 None 💨 3 mph H 93%30.06 inHg

Thursday

2:00 AM

Partly cloudy night

75° 💧 None 💨 5 mph H 96%30.03 inHg

5:00 AM

Mostly cloudy night

74° 💧 None 💨 3 mph H 97%30.00 inHg

8:00 AM

Sunny

75° 💧 None 💨 4 mph H 96%30.03 inHg

11:00 AM

Light rain

83° 💧 None 💨 4 mph H 79%30.06 inHg

2:00 PM

Light rain

79° 💧 None 💨 6 mph H 91%30.06 inHg

8:00 PM

Mostly cloudy night

86° 💧 None 💨 8 mph H 70%30.03 inHg

Friday

2:00 AM

Mostly clear night

79° 💧 None 💨 6 mph H 87%30.03 inHg

8:00 AM

Sunny

76° 💧 None 💨 1 mph H 93%30.03 inHg

2:00 PM

Sunny

76° 💧 None 💨 3 mph H 95%30.03 inHg

8:00 PM

Mostly clear night

87° 💧 None 💨 7 mph H 71%30.00 inHg

Saturday

2:00 AM

Partly cloudy night

80° 💧 None 💨 0 mph H 88%30.00 inHg

8:00 AM

Sunny

76° 💧 None 💨 3 mph H 97%30.00 inHg

2:00 PM

Sunny

76° 💧 None 💨 5 mph H 96%30.00 inHg

8:00 PM

Mostly clear night

87° 💧 None 💨 8 mph H 73%29.97 inHg

Sunday

2:00 AM

Clear night

79° 💧 None 💨 4 mph H 88%29.91 inHg

8:00 AM

Sunny

74° 💧 None 💨 3 mph H 98%29.94 inHg

2:00 PM

Mostly cloudy

73° 💧 None 💨 4 mph H 99%29.94 inHg

8:00 PM

Clear night

89° 💧 None 💨 5 mph H 59%29.91 inHg

Monday

2:00 AM

Clear night

79° 💧 None 💨 3 mph H 87%29.91 inHg

8:00 AM

Sunny

74° 💧 None 💨 2 mph H 99%29.91 inHg

2:00 PM

Overcast

74° 💧 None 💨 1 mph H 99%29.94 inHg

8:00 PM

Light rain

89° 💧 None 💨 4 mph H 59%29.91 inHg

Tuesday

2:00 AM

Clear night

80° 💧 None 💨 3 mph H 87%29.91 inHg

8:00 AM

Sunny

75° 💧 None 💨 3 mph H 95%29.94 inHg

2:00 PM

Partly cloudy

75° 💧 None 💨 3 mph H 98%29.97 inHg

8:00 PM

Clear night

88° 💧 None 💨 7 mph H 62%30.00 inHg

Wednesday

2:00 AM

Clear night

76° 💧 None 💨 6 mph H 79%30.00 inHg

8:00 AM

Sunny

71° 💧 None 💨 2 mph H 94%30.03 inHg

2:00 PM

Sunny

71° 💧 None 💨 2 mph H 95%30.03 inHg

8:00 PM

Moderate rain

82° 💧 None 💨 8 mph H 82%30.03 inHg

Thursday

2:00 AM

Clear night

77° 💧 None 💨 5 mph H 96%30.03 inHg

8:00 AM

Mostly sunny

75° 💧 None 💨 1 mph H 99%30.03 inHg

2:00 PM

Partly cloudy

75° 💧 None 💨 4 mph H 99%30.03 inHg

8:00 PM

Light rain

86° 💧 None 💨 7 mph H 71%30.00 inHg

Friday

2:00 AM

Clear night

77° 💧 None 💨 1 mph H 99%30.00 inHg

8:00 AM

Overcast

73° 💧 None 💨 3 mph H 100%29.97 inHg

2:00 PM

Mostly sunny

74° 💧 None 💨 4 mph H 97%29.97 inHg

8:00 PM

Light rain

86° 💧 None 💨 5 mph H 76%29.94 inHg

Saturday

2:00 AM

Overcast night

78° 💧 None 💨 6 mph H 92%29.94 inHg

8:00 AM

Overcast

77° 💧 None 💨 5 mph H 95%29.91 inHg

2:00 PM

Overcast

76° 💧 None 💨 6 mph H 94%29.91 inHg

In Port St. Lucie and, more broadly, across the state of Florida: Tonight will be mostly cloudy with mild to warm temperatures around 80 to 81 degrees Fahrenheit. Light northwest breezes will be present, averaging up to 5 mph, with gusts reaching 10 mph. There is a possibility of light rain, with an estimated accumulation of about 0.1 inches. The rain is expected to be brief and scattered, mainly during the evening hours. As the night progresses, conditions will gradually stabilize, though clouds will remain prevalent. Temperatures are likely to stay steady through the night, providing a relatively warm evening. No significant weather events are anticipated, but residents should be prepared for potential light showers if planning outdoor activities later tonight.

15-Day Weather Outlook for Port St. Lucie

Sunday, Sep 13Sun Sep 13

Light thunderstorms 88°/74° 💧 None 💨 7 mph

Monday, Sep 14Mon Sep 14

Light rain 82°/74° 💧 1.162 in 💨 4 mph

Tuesday, Sep 15Tue Sep 15

Light rain 84°/74° 💧 0.257 in 💨 8 mph

Wednesday, Sep 16Wed Sep 16

Moderate rain 85°/75° 💧 0.265 in 💨 10 mph

Thursday, Sep 17Thu Sep 17

Light rain 83°/74° 💧 0.382 in 💨 6 mph

Friday, Sep 18Fri Sep 18

Mostly cloudy 86°/76° 💧 0.169 in 💨 8 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 87°/76° 💧 0.097 in 💨 7 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 87°/73° 💧 0.061 in 💨 8 mph

Monday, Sep 21Mon Sep 21

Overcast 89°/74° 💧 0.001 in 💨 5 mph

Tuesday, Sep 22Tue Sep 22

Light rain 89°/75° 💧 0.040 in 💨 4 mph

Wednesday, Sep 23Wed Sep 23

Sunny 88°/71° 💧 None 💨 7 mph

Thursday, Sep 24Thu Sep 24

Moderate rain 82°/75° 💧 0.244 in 💨 8 mph

Friday, Sep 25Fri Sep 25

Light rain 86°/73° 💧 0.112 in 💨 7 mph

Saturday, Sep 26Sat Sep 26

Light rain 86°/76° 💧 0.081 in 💨 6 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Port St. Lucie

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Port St. Lucie

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 11:00 PM

PM2.5 Fine particles Good 3,0µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 3,7µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 15,8µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 9,6µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Port St. Lucie

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 8,5Very high 😊Good

Tomorrow UV 6,8High 😊Good

Sunday UV 5,6Moderate 😊Good

Monday UV 9,8Very high 🙂Fair

Tuesday UV 7,0High 🙂Fair

Wednesday UV 7,0High —Unavailable

Thursday UV 7,0High —Unavailable

Today's weather health advice Open today's recommendations.

Very high UV risk

Use SPF 50+ sunscreen, a hat and sunglasses. Seek shade and limit exposure around midday.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Best in the morning or late in the day

For walking, running or cycling, prefer the early morning or late afternoon.

WIND OUTLOOK

Hourly Wind Forecast for Port St. Lucie

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · PORT ST. LUCIE, FLORIDA

Tonight's Stargazing & Shooting Stars

Fair observing conditions. Best local viewing window: 12:00 AM–1:00 AM.

55/100Best-hour score

BEST TIME TONIGHT 12:00 AM–1:00 AM Astronomical darkness: 8:49 PM–5:47 AM

☁ Cloud cover 55% Real hourly forecast for the best viewing hour.

☾ Moonlight 0% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 26° high at the best hour.

✦ Estimated visible meteors 0–2/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min34%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Port St. Lucie were last refreshed today at 10:17 PM. The current forecast period extends through 13/09/2026 at 8:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.