Weather in Port St. Lucie, FL
Port St. Lucie, Sunday, 9 August, 12:55
Partly cloudy. Feels like 102°. High 90°, low 78°.
Monthly outlook for Port St. Lucie, FL: average high 90.9°, average low 78°. That is 1.8° above the climate normal for August. Precipitation is expected on 7 days (about 1.0 inches), against a normal of 13 days and 3.0 inches. The warmest day looks like 13 August (93.3°), the coolest 21 August (76.5°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 90.5° | 87.8° | +1.5° |
| 19 August – 28 August | 91.5° | 87.1° | +2.4° |
| 29 August – 7 September | at normal | 86.5° | — |
August records over 66 years
0
Port St. Lucie, Monday, 10 August
Overcast. High 90°, low 78°.
0
Port St. Lucie, Tuesday, 11 August
Clear. High 91°, low 78°.
0Port St. Lucie, Wednesday, 12 August
Clear. High 92°, low 77°.
0.08
Port St. Lucie, Thursday, 13 August
Light rain. High 93°, low 79°.
0.02Port St. Lucie, Friday, 14 August
Light rain. High 91°, low 78°.
0.17Port St. Lucie, Saturday, 15 August
Rain. High 90°, low 79°.
0.03Port St. Lucie, Sunday, 16 August
Light rain. High 90°, low 77°.
0.19Port St. Lucie, Monday, 17 August
Light rain. High 87°, low 78°.
0Port St. Lucie, Tuesday, 18 August
Overcast. High 91°, low 77°.
0.08Port St. Lucie, Wednesday, 19 August
Light rain. High 93°, low 79°.
0.19Port St. Lucie, Thursday, 20 August
Light rain. High 93°, low 77°.
0Port St. Lucie, Friday, 21 August
Overcast. High 92°, low 77°.
0.01Port St. Lucie, Saturday, 22 August
Light rain. High 92°, low 78°.
0.05Port St. Lucie, Sunday, 23 August
Light rain. High 89°, low 79°.
0
Port St. Lucie, Monday, 24 August
Mostly clear. High 90°, low 79°.
0.2Port St. Lucie, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.2Port St. Lucie, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.16Port St. Lucie, Thursday, 27 August
Climate normal for this date — 60-year average.
0.17Port St. Lucie, Friday, 28 August
Climate normal for this date — 60-year average.
0.15Port St. Lucie, Saturday, 29 August
Climate normal for this date — 60-year average.
0.19Port St. Lucie, Sunday, 30 August
Climate normal for this date — 60-year average.
0.16Port St. Lucie, Monday, 31 August
Climate normal for this date — 60-year average.
0.18Port St. Lucie, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.16Port St. Lucie, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.24Port St. Lucie, Thursday, 3 September
Climate normal for this date — 60-year average.
0.23Port St. Lucie, Friday, 4 September
Climate normal for this date — 60-year average.
0.28Port St. Lucie, Saturday, 5 September
Climate normal for this date — 60-year average.
0.22Port St. Lucie, Sunday, 6 September
Climate normal for this date — 60-year average.
0.2Port St. Lucie, Monday, 7 September
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Port St. Lucie, FL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Port St. Lucie, FL since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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