Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. 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 83%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 9 Dec 7:56 am AST
Extended Forecast for

San Juan PR

  • Today

    Today: Scattered showers, mainly after 3pm.  Mostly sunny, with a high near 87. East southeast wind 5 to 13 mph.  Chance of precipitation is 30%.

    High: 87 °F

    Scattered
    Showers

  • Tonight

    Tonight: Isolated showers before 9pm, then isolated showers after 3am.  Mostly clear, with a low around 72. South southeast wind 5 to 8 mph.  Chance of precipitation is 10%.

    Low: 72 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Scattered showers, mainly after noon.  Mostly sunny, with a high near 87. Light southeast wind becoming east 11 to 16 mph in the morning. Winds could gust as high as 21 mph.  Chance of precipitation is 40%.

    High: 87 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers, mainly before midnight.  Partly cloudy, with a low around 74. East wind 7 to 9 mph.  Chance of precipitation is 30%.

    Low: 74 °F

    Scattered
    Showers

  • Thursday

    Thursday: Isolated showers before noon.  Sunny, with a high near 88. East southeast wind 9 to 14 mph.  Chance of precipitation is 10%.

    High: 88 °F

    Isolated
    Showers then
    Sunny

  • Thursday Night

    Thursday Night: Isolated showers.  Partly cloudy, with a low around 74. East wind 7 to 9 mph.  Chance of precipitation is 10%.

    Low: 74 °F

    Isolated
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 88. East wind 9 to 15 mph.

    High: 88 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Scattered showers.  Partly cloudy, with a low around 74. East wind around 9 mph.  Chance of precipitation is 30%.

    Low: 74 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers, mainly after noon.  Mostly sunny, with a high near 87. East wind 9 to 18 mph, with gusts as high as 24 mph.  Chance of precipitation is 30%.

    High: 87 °F

    Mostly Sunny
    then
    Scattered
    Showers

Detailed Forecast

Today
Scattered showers, mainly after 3pm. Mostly sunny, with a high near 87. East southeast wind 5 to 13 mph. Chance of precipitation is 30%.
Tonight
Isolated showers before 9pm, then isolated showers after 3am. Mostly clear, with a low around 72. South southeast wind 5 to 8 mph. Chance of precipitation is 10%.
Wednesday
Scattered showers, mainly after noon. Mostly sunny, with a high near 87. Light southeast wind becoming east 11 to 16 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 40%.
Wednesday Night
Scattered showers, mainly before midnight. Partly cloudy, with a low around 74. East wind 7 to 9 mph. Chance of precipitation is 30%.
Thursday
Isolated showers before noon. Sunny, with a high near 88. East southeast wind 9 to 14 mph. Chance of precipitation is 10%.
Thursday Night
Isolated showers. Partly cloudy, with a low around 74. East wind 7 to 9 mph. Chance of precipitation is 10%.
Friday
Mostly sunny, with a high near 88. East wind 9 to 15 mph.
Friday Night
Scattered showers. Partly cloudy, with a low around 74. East wind around 9 mph. Chance of precipitation is 30%.
Saturday
Scattered showers, mainly after noon. Mostly sunny, with a high near 87. East wind 9 to 18 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Saturday Night
Scattered showers. Mostly cloudy, with a low around 74. Chance of precipitation is 50%.
Sunday
Scattered showers. Partly sunny, with a high near 87. Chance of precipitation is 50%.
Sunday Night
Scattered showers. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Monday
Showers likely. Mostly cloudy, with a high near 87. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
San Juan PR
 18.41°N 66.07°W (Elev. 56 ft)
3:38 am AST Dec 9, 2025
8am AST Dec 9, 2025-6pm AST Dec 15, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database