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National Weather Service Forecast for: San Juan, Puerto Rico  

Updated: 9:32 pm AST Jul 21, 2017 

Hazardous Weather Outlook
 

Overnight

Overnight: Scattered showers.  Partly cloudy, with a low around 78. East wind around 11 mph.  Chance of precipitation is 40%.Scattered
Showers

Saturday

Saturday: Scattered showers, then showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 88. Heat index values as high as 102. East wind 10 to 16 mph, with gusts as high as 22 mph.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible. Scattered
Showers then
Showers
Likely
Saturday
Night
Saturday Night: Showers likely and possibly a thunderstorm before 9pm, then scattered showers and thunderstorms after 9pm.  Mostly cloudy, with a low around 78. East wind 8 to 10 mph.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible. Showers
Likely

Sunday

Sunday: Scattered showers and thunderstorms.  Partly sunny, with a high near 91. Heat index values as high as 103. East wind 8 to 15 mph, with gusts as high as 21 mph.  Chance of precipitation is 40%.Scattered
Showers

Sunday
Night
Sunday Night: Isolated showers.  Partly cloudy, with a low around 80. East wind 10 to 13 mph.  Chance of precipitation is 10%.Isolated
Showers

Monday

Monday: Isolated showers.  Mostly sunny, with a high near 86. East wind 13 to 15 mph, with gusts as high as 21 mph.  Chance of precipitation is 20%.Isolated
Showers

Monday
Night
Monday Night: Partly cloudy, with a low around 79. East wind 11 to 14 mph. Partly Cloudy

Tuesday

Tuesday: Mostly sunny, with a high near 91. East wind 11 to 14 mph, with gusts as high as 20 mph. Mostly Sunny

Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 79. East wind 7 to 11 mph. Partly Cloudy

Lo 78 °FHi 88 °FLo 78 °FHi 91 °FLo 80 °FHi 86 °FLo 79 °FHi 91 °FLo 79 °F

National Weather Service Forecast Details

 

 

Caribbean Sea


GRLevel3 Radar

  [10/10
GRLevel3 radar from NWS station TJUA

 

Local Radar

 

Weather Summary for Puerto Rico

000
AWCA82 TJSJ 212106
RWSPR

Weather Summary for Puerto Rico
National Weather Service San Juan PR
506 PM AST Fri Jul 21 2017

Scattered showers affected much of northeastern and western Puerto
Rico today. The doppler radar estimated between 1 to 3 inches of
rain with this shower activity. An isolated thunderstorm was
detected over western Puerto Rico. Temperatures were in the mid
80s to low 90s across the lower elevations and winds prevailed
from the east to northeast between 15 to 20 mph.

Tropical wave that affected the local area since last night has
exit the region and shower activity associated to this feature
remains mainly across the Caribbean waters and Mona Passage. For
tonight, fair weather conditions are expected to prevail. This
will be followed by an increase in showers and thunderstorms
during the weekend due to the passage of another tropical wave.

Across the regional waters...Small craft operators should continue
to exercise caution across the Atlantic waters as winds will be
up to 20 knots and seas of 6 feet are expected to continue
overnight. A moderate risk of rip currents continues across much
of the north, east and southern beaches of the islands.

$$

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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