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National Weather Service Forecast for: San Juan PR
Issued by: National Weather Service San Juan, PR
Updated: 4:15 pm AST Dec 12, 2018

San Juan
 
Tonight

Tonight: Isolated showers after 7pm.  Mostly clear, with a low around 73. East wind 5 to 10 mph.  Chance of precipitation is 20%.
Isolated
Showers
Thursday

Thursday: Scattered showers after 1pm.  Mostly sunny, with a high near 84. East wind 8 to 15 mph.  Chance of precipitation is 30%.
Sunny then
Scattered
Showers
Thursday
Night
Thursday Night: Scattered showers, mainly after 1am.  Partly cloudy, with a low around 75. East wind 13 to 15 mph.  Chance of precipitation is 40%.
Scattered
Showers
Friday

Friday: Scattered showers.  Partly sunny, with a high near 84. East wind around 11 mph.  Chance of precipitation is 50%.
Scattered
Showers
Friday
Night
Friday Night: Scattered showers.  Mostly cloudy, with a low around 75. East wind 11 to 15 mph.  Chance of precipitation is 50%.
Scattered
Showers
Saturday

Saturday: Scattered showers.  Partly sunny, with a high near 83. East southeast wind 14 to 20 mph, with gusts as high as 26 mph.  Chance of precipitation is 50%.
Scattered
Showers
Saturday
Night
Saturday Night: Scattered showers.  Mostly cloudy, with a low around 73. East wind 11 to 15 mph.  Chance of precipitation is 30%.
Scattered
Showers
Sunday

Sunday: Mostly sunny, with a high near 85. East wind 11 to 13 mph.
Mostly Sunny

Sunday
Night
Sunday Night: Partly cloudy, with a low around 74. East southeast wind around 9 mph.
Partly Cloudy

Lo 73 °F Hi 84 °F Lo 75 °F Hi 84 °F Lo 75 °F Hi 83 °F Lo 73 °F Hi 85 °F Lo 74 °F

Hazardous Weather Outlook
 

Tonight
 
Isolated showers after 7pm. Mostly clear, with a low around 73. East wind 5 to 10 mph. Chance of precipitation is 20%.
Thursday
 
Scattered showers after 1pm. Mostly sunny, with a high near 84. East wind 8 to 15 mph. Chance of precipitation is 30%.
Thursday Night
 
Scattered showers, mainly after 1am. Partly cloudy, with a low around 75. East wind 13 to 15 mph. Chance of precipitation is 40%.
Friday
 
Scattered showers. Partly sunny, with a high near 84. East wind around 11 mph. Chance of precipitation is 50%.
Friday Night
 
Scattered showers. Mostly cloudy, with a low around 75. East wind 11 to 15 mph. Chance of precipitation is 50%.
Saturday
 
Scattered showers. Partly sunny, with a high near 83. East southeast wind 14 to 20 mph, with gusts as high as 26 mph. Chance of precipitation is 50%.
Saturday Night
 
Scattered showers. Mostly cloudy, with a low around 73. East wind 11 to 15 mph. Chance of precipitation is 30%.
Sunday
 
Mostly sunny, with a high near 85. East wind 11 to 13 mph.
Sunday Night
 
Partly cloudy, with a low around 74. East southeast wind around 9 mph.
Monday
 
Mostly sunny, with a high near 84.
Monday Night
 
Partly cloudy, with a low around 73.
Tuesday
 
Mostly sunny, with a high near 85.
Tuesday Night
 
Partly cloudy, with a low around 73.
Wednesday
 
Mostly sunny, with a high near 84.

 

 

 

Weather Summary

000
AWCA82 TJSJ 120818
RWSPR

Weather Summary for Puerto Rico
National Weather Service San Juan PR
402 AM AST Wed Dec 12 2018

Most clear skies were observed during the overnight period and
this morning. TJUA Radar detected a few showers across the
Atlantic and Caribbean waters with light rainfall amounts.
Overnight low temperatures were near the upper 60s to the lower
70s in lower elevations, and the lower to middle 60s in higher
elevations. Winds were out of the east to northeast at 5 to 10
mph.

A stable air mass remains in place, but a shear line to the north of
Puerto Rico will pull moisture across Puerto Rico and increase rain
chances for portions of northern, interior and western Puerto Rico.
Showers that do develop will be short-lived due to drier air that
remains in the mid to upper-levels of the atmosphere. A ridge of
high pressure will strengthen across the area early Thursday and
remain anchored overhead through Friday. The upper level ridge will
bring low-level moisture across the island periodically over the
next several days which will help induce showers. Today`s high
temperatures will be near the middle to upper 80s near coastal
areas, and the middle 70s to the upper 70s in higher elevations.

Across the local waters, seas will remain between 3 to 5 feet,
through early Thursday. Then seas will increase as a result of a
northwest swell that is forecast to move into the Atlantic and
Caribbean waters.

$$

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.

NWS SJU Office Area Forecast Discussion

 

 

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