Weather in Rio Piedras, PR
Rio Piedras, Sunday, 9 August, 05:28
Mostly clear. Feels like 80°. High 90°, low 79°.
Monthly outlook for Rio Piedras, PR: average high 90.2°, average low 76.1°. That is 0.8° above the climate normal for August. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 12 days and 2.6 inches. The warmest day looks like 22 August (92.5°), the coolest 21 August (74.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 August – 18 August | 89.9° | 88.9° | +0.6° |
| 19 August – 28 August | 90.8° | 88.8° | +1.1° |
| 29 August – 7 September | at normal | 88.9° | — |
August records over 66 years
Climate normals and records are computed from the nearest reference point — San Juan (1 mi).
0
Rio Piedras, Monday, 10 August
Overcast. High 91°, low 78°.
0.01
Rio Piedras, Tuesday, 11 August
Light rain. High 90°, low 77°.
0.01Rio Piedras, Wednesday, 12 August
Light rain. High 90°, low 77°.
0.02Rio Piedras, Thursday, 13 August
Light rain. High 89°, low 77°.
0.04Rio Piedras, Friday, 14 August
Light rain. High 88°, low 77°.
0.02Rio Piedras, Saturday, 15 August
Light rain. High 89°, low 77°.
0.02Rio Piedras, Sunday, 16 August
Light rain. High 89°, low 75°.
0.01Rio Piedras, Monday, 17 August
Light rain. High 90°, low 76°.
0.01Rio Piedras, Tuesday, 18 August
Light rain. High 92°, low 75°.
0
Rio Piedras, Wednesday, 19 August
Clear. High 92°, low 75°.
0
Rio Piedras, Thursday, 20 August
Partly cloudy. High 90°, low 74°.
0.07Rio Piedras, Friday, 21 August
Light rain. High 88°, low 74°.
0Rio Piedras, Saturday, 22 August
Partly cloudy. High 92°, low 75°.
0Rio Piedras, Sunday, 23 August
Light rain. High 91°, low 75°.
0.03Rio Piedras, Monday, 24 August
Light rain. High 91°, low 77°.
0.15Rio Piedras, Tuesday, 25 August
Climate normal for this date — 60-year average.
0.15Rio Piedras, Wednesday, 26 August
Climate normal for this date — 60-year average.
0.13Rio Piedras, Thursday, 27 August
Climate normal for this date — 60-year average.
0.19Rio Piedras, Friday, 28 August
Climate normal for this date — 60-year average.
0.14Rio Piedras, Saturday, 29 August
Climate normal for this date — 60-year average.
0.24Rio Piedras, Sunday, 30 August
Climate normal for this date — 60-year average.
0.16Rio Piedras, Monday, 31 August
Climate normal for this date — 60-year average.
0.16Rio Piedras, Tuesday, 1 September
Climate normal for this date — 60-year average.
0.17Rio Piedras, Wednesday, 2 September
Climate normal for this date — 60-year average.
0.14Rio Piedras, Thursday, 3 September
Climate normal for this date — 60-year average.
0.15Rio Piedras, Friday, 4 September
Climate normal for this date — 60-year average.
0.29Rio Piedras, Saturday, 5 September
Climate normal for this date — 60-year average.
0.22Rio Piedras, Sunday, 6 September
Climate normal for this date — 60-year average.
0.16Rio Piedras, 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 Rio Piedras, PR 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 Rio Piedras, PR 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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