Skip to main content
One weather site to rule them all
checkweather.io
CheckWeather USPort Saint Lucie
Forecast confidence: Medium · models disagree by 6°F

Port Saint Lucie (Port St. Lucie) weather

Loading live data…

Showers,rain likely tomorrow

NWS, the American and the European model put Port Saint Lucie's high today between 81° and 87°, a 6° split. Tomorrow looks showers around 85°, with a 69% chance of rain.

84°76°
85°74°
85°74°
86°74°
87°74°
85°75°
Todaysplit ±6°Tomorrowmodels agreeSundaysplit ±6°Mondaysplit ±6°Tuesdaysplit ±6°Wednesdaysplit ±5°
NWSNational Blend (NBM)
84°
Showers
Today 84°·Low 75°·Rain 48%
AmericanNOAA GFS
87°
Cloudy
Today 87°·Low 76°·Rain 48%
EuropeanECMWF
81°
Thunderstorm
Today 81°·Low 76°·Rain 94%
CheckWeather.io on iPhoneFree. No ads, no account.

Port Saint Lucie weather alerts and warnings

active National Weather Service watches, warnings and advisories

Checking the National Weather Service for active alerts covering Port Saint Lucie…

Port Saint Lucie weather in numbers

from 30 years of measured normals

Port Saint Lucie swings 31°F across the year, from 90°F highs in July to 59°F lows in January, and September is usually the wettest month in a year that brings about 60 in of precipitation.

Warmest month
July
90°F average high
Coldest month
January
59°F average low
Wettest month
September
60 in a year
Below freezing
Never
overnight lows stay above 32°F
Comfortable
3 months
January, February and December
Residents
165,000
share this forecast

The weather map: all three models at once

NWS, American, European side by side around Port Saint Lucie and nearby towns.Live rain radar →
Loading the three model maps…

Port Saint Lucie hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

Loading the three models…

Port Saint Lucie 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Showers
84° 76°
±6°
Tomorrow
Showers
85° 74°
models agree
Sun
Drizzle
85° 74°
±6°
Mon
Showers
86° 74°
±6°
Tue
Thunderstorm
87° 74°
±6°
Wed
Showers
85° 75°
±5°
Thu
Light drizzle
84° 76°
±6°
Fri
Light drizzle
85° 76°
models agree
Sat
Heavy drizzle
86° 75°
models agree
Sun
Showers
85° 74°
±5°
Mon
Showers
84° 74°
models agree
Tue
Thunderstorm
85° 74°
±7°
Wed
Showers
81° 75°
±6°
Thu
Thunderstorm
80° 76°
models agree

Port Saint Lucie, Florida (FL) (often shortened to Port St. Lucie) is at its warmest in Jul (average highs near 90°F) and coldest in Jan (lows around 59°F), with roughly 60 in of precipitation across the year. Below, compare what NWS, American, European forecast for Port Saint Lucie right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Port Saint Lucie climate by month

average daytime high and overnight low across a typical year
Jan
74°
59°
Feb
78°
60°
Mar
82°
65°
Apr
83°
66°
May
88°
71°
Jun
88°
74°
Jul
90°
75°
Aug
90°
76°
Sep
88°
74°
Oct
83°
72°
Nov
80°
66°
Dec
74°
61°

Which forecast is most accurate in Port Saint Lucie?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
88
/100rank #1
78±2.2°F95±1.6 mph9597% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
56
/100rank #2
79±2.1°F90±3.1 mph548% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
Loading ratings…
AmericanNOAA GFS
Loading ratings…
EuropeanECMWF
Loading ratings…

One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±6°81° to 87°±46%48% to 94% chance
Tomorrow±1°84° to 86°±30%39% to 69% chance
Sun±6°83° to 89°±22%75% to 97% chance
Mon±6°83° to 89°±9%89% to 98% chance
Tue±6°84° to 90°±7%83% to 90% chance

The models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Port Saint Lucie

today, local time
Sunrise
07:08
Sunset
19:22
Daylight
12h 14m

Common questions

What's the weather in Port Saint Lucie today?
On this page we show what NWS, American, European each forecast for Port Saint Lucie today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Port Saint Lucie today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Port Saint Lucie and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Port Saint Lucie?
Over the last 30 days, the European model has been the most accurate for Port Saint Lucie (CheckWeather Score 88/100), ahead of the American at 56. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Port Saint Lucie?
July is typically the warmest month in Port Saint Lucie, with average highs around 90°F.
How cold does Port Saint Lucie get?
The coldest month in Port Saint Lucie is January, when overnight lows average about 59°F.
How much rain does Port Saint Lucie get?
Port Saint Lucie sees roughly 60 in of precipitation a year, with September usually the wettest month.

Nearby

More US weather