Weather in San Juan, PR
San Juan, Wednesday, 28 October, 03:31
Mostly clear. Feels like 79°. High 92°, low 79°.
Monthly outlook for San Juan, PR: average high 87.3°, average low 77.2°. That is 1.2° above the climate normal for October. Precipitation is expected on 10 days (about 0.9 inches), against a normal of 13 days and 3.1 inches. The warmest day looks like 28 October (92°), the coolest 6 November (75.1°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 28 October – 6 November | 87.1° | 85.5° | +0.9° |
| 7 November – 16 November | 87.7° | 84.5° | +1.8° |
| 17 November – 26 November | at normal | 83.9° | — |
October records over 66 years
0.1
San Juan, Thursday, 29 October
Light rain. High 91°, low 80°.
0.06San Juan, Friday, 30 October
Light rain. High 87°, low 77°.
0.07San Juan, Saturday, 31 October
Light rain. High 85°, low 78°.
0.1San Juan, Sunday, 1 November
Light rain. High 86°, low 79°.
0.01San Juan, Monday, 2 November
Light rain. High 86°, low 77°.
0.04San Juan, Tuesday, 3 November
Light rain. High 88°, low 77°.
0.07San Juan, Wednesday, 4 November
Light rain. High 86°, low 76°.
0.11San Juan, Thursday, 5 November
Light rain. High 85°, low 77°.
0.12San Juan, Friday, 6 November
Light rain. High 86°, low 75°.
0.12San Juan, Saturday, 7 November
Light rain. High 88°, low 75°.
0.03San Juan, Sunday, 8 November
Light rain. High 87°, low 77°.
0San Juan, Monday, 9 November
Light rain. High 88°, low 77°.
0.01San Juan, Tuesday, 10 November
Light rain. High 88°, low 77°.
0.02San Juan, Wednesday, 11 November
Light rain. High 88°, low 77°.
0
San Juan, Thursday, 12 November
Clear. High 87°, low 77°.
0.15San Juan, Friday, 13 November
Climate normal for this date — 60-year average.
0.12San Juan, Saturday, 14 November
Climate normal for this date — 60-year average.
0.14San Juan, Sunday, 15 November
Climate normal for this date — 60-year average.
0.13San Juan, Monday, 16 November
Climate normal for this date — 60-year average.
0.15San Juan, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.16San Juan, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.15San Juan, Thursday, 19 November
Climate normal for this date — 60-year average.
0.13San Juan, Friday, 20 November
Climate normal for this date — 60-year average.
0.12San Juan, Saturday, 21 November
Climate normal for this date — 60-year average.
0.18San Juan, Sunday, 22 November
Climate normal for this date — 60-year average.
0.13San Juan, Monday, 23 November
Climate normal for this date — 60-year average.
0.12San Juan, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.11San Juan, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.11San Juan, Thursday, 26 November
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 San Juan, 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 San Juan, 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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