National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Significant Severe Weather in the Upper Midwest; Blizzard Conditions in the Cascades; Heavy Rain and Thunderstorms in Hawaii

Significant severe thunderstorms, including the risk for strong to intense tornadoes, are expected across the Upper Midwest this afternoon and evening. An atmospheric river will bring blizzard conditions to the northern Cascades. A powerful Kona storm is expected to impact Hawaii today into Saturday, bringing heavy rainfall and strong winds. Read More >

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Partly Cloudy and Breezy

81°F

27°C

Humidity 66%
Wind Speed E 21 mph
Barometer 30.04 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 10 Mar 3:56 pm AST
Extended Forecast for

San Juan PR

  • This Afternoon

    This Afternoon: Scattered showers. Mostly cloudy, with a high near 86. East wind around 14 mph. Chance of precipitation is 50%.

    High: 86 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers. Mostly cloudy, with a low around 73. East wind 9 to 11 mph. Chance of precipitation is 50%.

    Low: 73 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before 9am. Partly sunny, with a high near 84. East wind 9 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 84 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Scattered showers, mainly before 9pm. Partly cloudy, with a low around 73. East wind 7 to 10 mph. Chance of precipitation is 50%.

    Low: 73 °F

    Scattered
    Showers then
    Isolated
    Showers

  • Thursday

    Thursday: Scattered showers. Partly sunny, with a high near 85. East wind 7 to 15 mph. Chance of precipitation is 40%.

    High: 85 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Scattered showers. Mostly cloudy, with a low around 72. East wind 6 to 8 mph. Chance of precipitation is 50%.

    Low: 72 °F

    Scattered
    Showers

  • Friday

    Friday: Scattered showers, mainly before noon. Mostly sunny, with a high near 86. East wind 8 to 15 mph. Chance of precipitation is 30%.

    High: 86 °F

    Scattered
    Showers then
    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 72. East wind around 9 mph.

    Low: 72 °F

    Clear

  • Saturday

    Saturday: Scattered showers, mainly after noon. Mostly sunny, with a high near 86. East wind 10 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

    High: 86 °F

    Sunny then
    Scattered
    Showers

Detailed Forecast

This Afternoon
Scattered showers. Mostly cloudy, with a high near 86. East wind around 14 mph. Chance of precipitation is 50%.
Tonight
Scattered showers. Mostly cloudy, with a low around 73. East wind 9 to 11 mph. Chance of precipitation is 50%.
Wednesday
Showers likely, mainly before 9am. Partly sunny, with a high near 84. East wind 9 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Scattered showers, mainly before 9pm. Partly cloudy, with a low around 73. East wind 7 to 10 mph. Chance of precipitation is 50%.
Thursday
Scattered showers. Partly sunny, with a high near 85. East wind 7 to 15 mph. Chance of precipitation is 40%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 72. East wind 6 to 8 mph. Chance of precipitation is 50%.
Friday
Scattered showers, mainly before noon. Mostly sunny, with a high near 86. East wind 8 to 15 mph. Chance of precipitation is 30%.
Friday Night
Clear, with a low around 72. East wind around 9 mph.
Saturday
Scattered showers, mainly after noon. Mostly sunny, with a high near 86. East wind 10 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 73.
Sunday
Scattered showers. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Sunday Night
Clear, with a low around 73.
Monday
Scattered showers. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Monday Night
Scattered showers. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Tuesday
Scattered showers. Mostly sunny, with a high near 86.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
San Juan PR
 18.41°N 66.07°W (Elev. 56 ft)
Last Update:
3:52 pm AST Mar 10, 2026
Forecast Valid:
4pm AST Mar 10, 2026-6pm AST Mar 17, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation