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National Weather Service Forecast for: San Juan, Puerto Rico  

Updated: 10:05 am AST Sep 1, 2015 

Hazardous Weather Outlook
Short Term Forecast
 

Today

Today: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm.  Partly sunny, with a high near 90. Heat index values as high as 105. East wind around 15 mph, with gusts as high as 21 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Showers
Likely
Tonight

Tonight: Scattered showers and thunderstorms.  Mostly cloudy, with a low around 78. East wind 5 to 9 mph.  Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Scattered
Showers
Wednesday

Wednesday: Scattered showers, with thunderstorms also possible after noon.  Mostly sunny, with a high near 91. Heat index values as high as 106. Southeast wind 7 to 13 mph, with gusts as high as 18 mph.  Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. Scattered
Showers
Wednesday
Night
Wednesday Night: Isolated showers.  Partly cloudy, with a low around 78. South southeast wind 3 to 8 mph.  Chance of precipitation is 20%.Isolated
Showers
Thursday

Thursday: Isolated showers.  Mostly sunny, with a high near 93. East southeast wind 7 to 11 mph.  Chance of precipitation is 20%.Isolated
Showers
Thursday
Night
Thursday Night: Isolated showers.  Mostly clear, with a low around 78. South southeast wind 5 to 8 mph.  Chance of precipitation is 10%.Isolated
Showers
Friday

Friday: Isolated showers.  Sunny, with a high near 91. East wind 6 to 10 mph.  Chance of precipitation is 10%.Isolated
Showers
Friday
Night
Friday Night: Scattered showers.  Partly cloudy, with a low around 79. East southeast wind 6 to 9 mph.  Chance of precipitation is 30%.Scattered
Showers
Saturday

Saturday: Scattered showers, mainly before noon.  Mostly sunny, with a high near 90. East wind 7 to 10 mph.  Chance of precipitation is 30%.Scattered
Showers
Hi 90 °FLo 78 °FHi 91 °FLo 78 °FHi 93 °FLo 78 °FHi 91 °FLo 79 °FHi 90 °F

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Tropical Weather Outlook

000
ABNT20 KNHC 011137
TWOAT

TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
800 AM EDT TUE SEP 1 2015

For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

The National Hurricane Center is issuing advisories on Tropical
Storm Fred, located northwest of the northwestern Cape Verde
Islands.

A tropical wave is forecast to move off of the west coast of Africa
on Thursday several hundred miles southeast of the Cape Verde
Islands.  Environmental conditions are expected to be somewhat
conducive for gradual development of this system through the weekend
while it moves westward at 15 to 20 mph.
* Formation chance through 48 hours...low...near 0 percent
* Formation chance through 5 days...low...20 percent

$$
Forecaster Brown
 

 

 

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