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

Early Heat Wave in the West; Fire Concerns in the Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Hazardous Weather Conditions

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

A Few Clouds

84°F

29°C

Humidity 55%
Wind Speed E 17 G 25 mph
Barometer 30.10 in (1019.1 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 17 Mar 10:56 am AST
Extended Forecast for

Emajagua PR

  • Today

    Today: Scattered showers, mainly before 3pm. Partly sunny, with a high near 82. East wind 15 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 82 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers. Mostly cloudy, with a low around 73. East wind around 15 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 73 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers. Partly sunny, with a high near 82. East wind 13 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

    High: 82 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Isolated showers before 9pm. Mostly clear, with a low around 72. East wind 10 to 13 mph. Chance of precipitation is 20%.

    Low: 72 °F

    Isolated
    Showers then
    Clear

  • Thursday

    Thursday: Showers likely, mainly before noon. Mostly cloudy, with a high near 82. East southeast wind 10 to 13 mph. Chance of precipitation is 60%.

    High: 82 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Scattered showers. Mostly cloudy, with a low around 73. East wind around 9 mph. Chance of precipitation is 40%.

    Low: 73 °F

    Scattered
    Showers

  • Friday

    Friday: Showers likely, mainly before noon. Partly sunny, with a high near 81. South southeast wind 8 to 10 mph. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely then
    Mostly Sunny

  • Friday Night

    Friday Night: Scattered showers. Mostly cloudy, with a low around 72. Light south southeast wind. Chance of precipitation is 50%.

    Low: 72 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers, mainly before noon. Mostly sunny, with a high near 81. South wind 3 to 7 mph. Chance of precipitation is 40%.

    High: 81 °F

    Scattered
    Showers then
    Mostly Sunny

Detailed Forecast

Today
Scattered showers, mainly before 3pm. Partly sunny, with a high near 82. East wind 15 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Tonight
Scattered showers. Mostly cloudy, with a low around 73. East wind around 15 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Scattered showers. Partly sunny, with a high near 82. East wind 13 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Wednesday Night
Isolated showers before 9pm. Mostly clear, with a low around 72. East wind 10 to 13 mph. Chance of precipitation is 20%.
Thursday
Showers likely, mainly before noon. Mostly cloudy, with a high near 82. East southeast wind 10 to 13 mph. Chance of precipitation is 60%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 73. East wind around 9 mph. Chance of precipitation is 40%.
Friday
Showers likely, mainly before noon. Partly sunny, with a high near 81. South southeast wind 8 to 10 mph. Chance of precipitation is 60%.
Friday Night
Scattered showers. Mostly cloudy, with a low around 72. Light south southeast wind. Chance of precipitation is 50%.
Saturday
Scattered showers, mainly before noon. Mostly sunny, with a high near 81. South wind 3 to 7 mph. Chance of precipitation is 40%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Sunday
Scattered showers. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Sunday Night
Scattered showers. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Monday
Scattered showers. Mostly sunny, with a high near 82. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Emajagua PR
 18°N 65.87°W (Elev. 0 ft)
Last Update:
2:56 am AST Mar 17, 2026
Forecast Valid:
11am AST Mar 17, 2026-6pm AST Mar 23, 2026
 
Forecast Discussion
 
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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