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National Weather Service Forecast for: San Juan, Puerto Rico  

Updated: 12:55 pm AST Oct 18, 2017 

Flash Flood Watch
Hazardous Weather Outlook
 

This
Afternoon
This Afternoon: Scattered showers and thunderstorms.  Partly sunny, with a steady temperature around 85. East southeast wind around 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 50%.Scattered
Showers

Tonight

Tonight: Scattered showers and thunderstorms.  Partly cloudy, with a low around 80. East southeast wind around 14 mph.  Chance of precipitation is 30%.Scattered
Showers

Thursday

Thursday: Isolated showers and thunderstorms.  Mostly sunny, with a high near 91. East southeast wind around 16 mph, with gusts as high as 21 mph.  Chance of precipitation is 20%.Isolated
T-storms

Thursday
Night
Thursday Night: Isolated showers.  Partly cloudy, with a low around 80. East southeast wind around 14 mph.  Chance of precipitation is 10%.Isolated
Showers

Friday

Friday: Isolated showers, with thunderstorms also possible after 1pm.  Mostly sunny, with a high near 89. East southeast wind 13 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 20%.Isolated
Showers then
Isolated
T-storms
Friday
Night
Friday Night: Isolated showers.  Partly cloudy, with a low around 80. East wind 10 to 13 mph.  Chance of precipitation is 10%.Isolated
Showers

Saturday

Saturday: Scattered showers, mainly after 1pm.  Mostly sunny, with a high near 86. East wind 10 to 14 mph.  Chance of precipitation is 30%.Mostly Sunny
then
Scattered
Showers
Saturday
Night
Saturday Night: Partly cloudy, with a low around 79. East wind 11 to 13 mph. Partly Cloudy

Sunday

Sunday: Scattered showers, mainly after 1pm.  Mostly sunny, with a high near 84. East wind 14 to 16 mph, with gusts as high as 21 mph.  Chance of precipitation is 30%.Mostly Sunny
then
Scattered
Showers
Hi 85 °FLo 80 °FHi 91 °FLo 80 °FHi 89 °FLo 80 °FHi 86 °FLo 79 °FHi 84 °F

National Weather Service Forecast Details

 

 

 

San Juan, PR WFO Imagery

 

Caribbean Sea

 

 

Weather Summary for Puerto Rico

000
AWCA82 TJSJ 180946
RWSPR

Weather Summary for Puerto Rico
National Weather Service San Juan PR
430 AM AST Wed Oct 18 2017

A Flash Flood Watch remains in effect through this evening.

Generally quiet conditions prevailed overnight, with only an
isolated thunderstorm or two and partly cloudy skies over the
island. A tropical wave passed to the south of the region
overnight.

Scattered to numerous shower and thunderstorm development is
expected across portions of the islands again today, which may
result in additional urban and small stream flooding, mudslides,
and river flooding. Ponding of water along roadways, reduced
visibilities, lightning and brief gusty winds can be expected in
and around the showers and thunderstorms.

Across the local waters...mariners can expect seas up to 7 feet
and winds up to 20 knots over the offshore waters and Anegada
Passage. Seas up to 5 feet and winds of 15-20 knots can be
expected elsewhere. Small Craft Advisories are in effect.

$$

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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