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National Weather Service Forecast for: San Juan PR
Issued by: National Weather Service San Juan, PR
Updated: 8:43 am AST Jun 27, 2024

San Juan
 
Today

Today: Scattered showers before noon, then scattered showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 91. Heat index values as high as 106. East wind 9 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
High: 91 °F		 Tonight

Tonight: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 79. East wind around 9 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Low: 79 °F		 Friday

Friday: Isolated showers. Mostly sunny, with a high near 90. Heat index values as high as 102. East wind 9 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
High: 90 °F		 Friday
Night
Friday Night: Scattered showers, mainly between 9pm and midnight. Partly cloudy, with a low around 79. East wind around 9 mph. Chance of precipitation is 40%.
Low: 79 °F		 Saturday

Saturday: Scattered showers. Mostly sunny, with a high near 90. East wind 8 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
High: 90 °F		 Saturday
Night
Saturday Night: Scattered showers. Partly cloudy, with a low around 80. East wind around 10 mph. Chance of precipitation is 30%.
Low: 80 °F		 Sunday

Sunday: Scattered showers, mainly after noon. Mostly sunny, with a high near 91. East wind 11 to 17 mph. Chance of precipitation is 30%.
High: 91 °F		 Sunday
Night
Sunday Night: Scattered showers. Mostly cloudy, with a low around 80. East wind 7 to 10 mph. Chance of precipitation is 40%.
Low: 80 °F		 Monday

Monday: Scattered showers, mainly before noon. Mostly sunny, with a high near 91. East northeast wind 14 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
High: 91 °F
Showers
Likely

 Showers
Likely

 Isolated
Showers

 Scattered
Showers

 Scattered
Showers

 Scattered
Showers

 Mostly Sunny
then
Scattered
Showers
 Scattered
Showers

 Scattered
Showers then
Mostly Sunny

Hazardous Weather Outlook
Heat Advisory
 

Today
 
 Scattered showers before noon, then scattered showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 91. Heat index values as high as 106. East wind 9 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 79. East wind around 9 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Friday
 
 Isolated showers. Mostly sunny, with a high near 90. Heat index values as high as 102. East wind 9 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday Night
 
 Scattered showers, mainly between 9pm and midnight. Partly cloudy, with a low around 79. East wind around 9 mph. Chance of precipitation is 40%.
Saturday
 
 Scattered showers. Mostly sunny, with a high near 90. East wind 8 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Saturday Night
 
 Scattered showers. Partly cloudy, with a low around 80. East wind around 10 mph. Chance of precipitation is 30%.
Sunday
 
 Scattered showers, mainly after noon. Mostly sunny, with a high near 91. East wind 11 to 17 mph. Chance of precipitation is 30%.
Sunday Night
 
 Scattered showers. Mostly cloudy, with a low around 80. East wind 7 to 10 mph. Chance of precipitation is 40%.
Monday
 
 Scattered showers, mainly before noon. Mostly sunny, with a high near 91. East northeast wind 14 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Monday Night
 
 Partly cloudy, with a low around 83.
Tuesday
 
 Scattered showers. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Tuesday Night
 
 Scattered showers. Partly cloudy, with a low around 83. Chance of precipitation is 40%.
Wednesday
 
 Mostly sunny, with a high near 91.