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.

Partly Cloudy

77°F

25°C

Humidity 74%
Wind Speed E 8 mph
Barometer 30.04 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 17 Mar 7:56 pm AST
Extended Forecast for

Emajagua PR

  • Tonight

    Tonight: Scattered showers. Mostly cloudy, with a low around 73. East wind 14 to 16 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 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 82 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Isolated showers before 9pm, then isolated showers after 3am. Partly cloudy, with a low around 72. East wind 11 to 13 mph. Chance of precipitation is 20%.

    Low: 72 °F

    Isolated
    Showers

  • Thursday

    Thursday: Showers likely, mainly before noon. Mostly cloudy, with a high near 82. East southeast wind 11 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 8 to 10 mph. Chance of precipitation is 40%.

    Low: 73 °F

    Scattered
    Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm before noon, then isolated showers. 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
    Isolated
    Showers

  • Friday Night

    Friday Night: Scattered showers. Mostly cloudy, with a low around 72. Calm 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. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 40%.

    High: 81 °F

    Scattered
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers likely. Mostly cloudy, with a low around 71. Calm wind becoming north around 6 mph after midnight. Chance of precipitation is 60%.

    Low: 71 °F

    Showers
    Likely

Detailed Forecast

Tonight
Scattered showers. Mostly cloudy, with a low around 73. East wind 14 to 16 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 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Wednesday Night
Isolated showers before 9pm, then isolated showers after 3am. Partly cloudy, with a low around 72. East wind 11 to 13 mph. Chance of precipitation is 20%.
Thursday
Showers likely, mainly before noon. Mostly cloudy, with a high near 82. East southeast wind 11 to 13 mph. Chance of precipitation is 60%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 73. East wind 8 to 10 mph. Chance of precipitation is 40%.
Friday
Showers likely and possibly a thunderstorm before noon, then isolated showers. 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. Calm wind. Chance of precipitation is 50%.
Saturday
Scattered showers, mainly before noon. Mostly sunny, with a high near 81. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 40%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 71. Calm wind becoming north around 6 mph after midnight. 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%.
Monday Night
Scattered showers. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Tuesday
Scattered showers. Partly sunny, with a high near 81. Chance of precipitation is 40%.
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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:
4:43 pm AST Mar 17, 2026
Forecast Valid:
8pm AST Mar 17, 2026-6pm AST Mar 24, 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