National Weather Service Today's Weather Impact Levels
Graphical Hazardous Weather Outlook
FLOOD THREAT
Lightning THREAT
HEAT THREAT
WIND THREAT
WAVES THREAT
RIP CURRENT THREAT
National Weather Service Forecast for:
San Juan PR
Issued by: National Weather Service San Juan, PR Updated: 10:04 am AST May 21, 2026
San Juan
Today
High: 88 °F
Scattered Showers
Tonight
Low: 76 °F
Scattered Showers
Friday
High: 88 °F
Scattered Showers
Friday Night Low: 76 °F
Isolated Showers
Saturday
High: 88 °F
Isolated Showers
Saturday Night Low: 76 °F
Mostly Clear
Sunday
High: 86 °F
Scattered Showers
Sunday Night Low: 76 °F
Scattered Showers
Memorial Day High: 87 °F
Showers Likely
Today
Scattered showers, mainly after noon. Mostly sunny, with a high near 88. East wind 15 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Tonight
Scattered showers, mainly after midnight. Mostly cloudy, with a low around 76. East wind 8 to 11 mph. Chance of precipitation is 50%.
Friday
Scattered showers, mainly after noon. Mostly sunny, with a high near 88. East wind 9 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Friday Night
Isolated showers. Partly cloudy, with a low around 76. East wind around 10 mph. Chance of precipitation is 20%.
Saturday
Isolated showers. Mostly sunny, with a high near 88. East wind 13 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 76. East wind 8 to 10 mph.
Sunday
Scattered showers. Partly sunny, with a high near 86. East wind 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Sunday Night
Scattered showers. Mostly cloudy, with a low around 76. East wind around 11 mph. Chance of precipitation is 40%.
Memorial Day
Showers likely, mainly after noon. Mostly cloudy, with a high near 87. East wind 14 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Monday Night
Scattered showers. Mostly cloudy, with a low around 77. Chance of precipitation is 40%.
Tuesday
Showers likely. Mostly cloudy, with a high near 87. Chance of precipitation is 60%.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 76. Chance of precipitation is 50%.
Wednesday
Scattered showers. Mostly cloudy, with a high near 87. Chance of precipitation is 50%.