Since 2001 providing the latest information on tropical cyclone activity in the Atlantic Basin and the weather conditions in Puerto Rico.

Local Weather Conditions

 

National Weather Service Today's Weather Impact Levels

National Weather Service Forecast for: San Juan, Puerto Rico  

Updated: 3:47 pm AST Oct 18, 2021

Hazardous Weather Outlook
This
Afternoon
This Afternoon: Scattered showers and thunderstorms.  Partly sunny, with a steady temperature around 84. East northeast wind around 5 mph.  Chance of precipitation is 40%.
Scattered
Showers
Hi 84 °F
Tonight

Tonight: Scattered showers.  Mostly cloudy, with a low around 77. Light and variable wind.  Chance of precipitation is 30%.
Scattered
Showers
Lo 77 °F
Tuesday

Tuesday: Scattered showers, mainly between noon and 3pm.  Mostly sunny, with a high near 88. North wind 3 to 8 mph.  Chance of precipitation is 30%.
Scattered
Showers
Hi 88 °F
Tuesday
Night
Tuesday Night: Scattered showers, mainly after 9pm.  Partly cloudy, with a low around 77. Southeast wind around 7 mph.  Chance of precipitation is 30%.
Scattered
Showers
Lo 77 °F
Wednesday

Wednesday: Scattered showers, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 89. East wind 8 to 11 mph.  Chance of precipitation is 60%.
Showers
Likely
Hi 89 °F
Wednesday
Night
Wednesday Night: Scattered showers and thunderstorms.  Mostly cloudy, with a low around 76. East wind around 9 mph.  Chance of precipitation is 40%.
Scattered
Showers
Lo 76 °F
Thursday

Thursday: Mostly sunny, with a high near 88. East wind 10 to 14 mph.
Mostly Sunny

Hi 88 °F
Thursday
Night
Thursday Night: Scattered showers.  Mostly cloudy, with a low around 76. East southeast wind around 10 mph.  Chance of precipitation is 40%.
Scattered
Showers
Lo 76 °F
Friday

Friday: Scattered showers, mainly before noon.  Mostly sunny, with a high near 88. East wind 10 to 15 mph.  Chance of precipitation is 30%.
Scattered
Showers then
Mostly Sunny
Hi 88 °F

National Weather Service Forecast Details

 

GRLevel3 Radar

  [10/10
GRLevel3 radar from NWS station TJUA

Day 1 rainfall

Day 2 rainfall

Day 3 rainfall

000
AWCA82 TJSJ 182051
RWSPR
PRZ001>013-190900-

Weather Summary for Puerto Rico
National Weather Service San Juan PR
451 PM AST Mon Oct 18 2021

Mostly sunny skies became partly cloudy to variably cloudy during
the afternoon, as showers and isolated thunderstorms developed
across the interior and southern slopes of Puerto Rico. This lead
to periods of locally heavy rainfall and consequently minor urban
and small stream flooding in some areas. Estimated rainfall
accumulations were between 1 to 2 inches with the heaviest rains.
Winds were generally light but from the east to northeast at 5 to
10 mph with sea breeze variations. Daytime high temperatures were
in the upper 80s to near 90 degrees along the coastal areas, and
in the upper 70s to low 80 in higher elevations and valleys.

Skies will become mostly clear to partly cloudy across the islands
with only limited passing showers expected to reach some of the
north and east coastal areas from time to time. Overnight low
temperatures will be in the mid to upper 70s along coastal areas,
and in the upper 60s at higher elevations. Winds will be calm to
light and variable. A mixture of sunshine and clouds is expected
once again on Tuesday with again the chance for locally and diurnally
induced afternoon convection mainly over the interior and west to
southwest sections of Puerto Rico.

Seas will remain tranquil across the local waters, at 3 feet or
less overnight into Tuesday. Light to gentle winds from the east
to northeast between 5 to 10 knots will prevail. There is a low
risk of rip currents across the local beaches.

$$

This product is issued around 5 AM and 5 PM each day and weather
conditions may change between issuances. Please verify the status
of any Watches...Warnings or Advisories mentioned in this product.

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