Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Mostly Cloudy

74°F

23°C

Humidity 91%
Wind Speed E 10 G 18 mph
Barometer 30.00 in (1015.9 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 20 Jan 3:56 am AST
Extended Forecast for

3 Miles WNW Luis Muñoz Marín International Airport PR

  • Overnight

    Overnight: Showers likely.  Mostly cloudy, with a low around 74. East wind around 13 mph.  Chance of precipitation is 60%.

    Low: 74 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Scattered showers.  Partly sunny, with a high near 86. East wind 14 to 20 mph.  Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

    High: 86 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers.  Mostly cloudy, with a low around 75. East wind around 14 mph.  Chance of precipitation is 50%.

    Low: 75 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before 9am.  Partly sunny, with a high near 86. East wind 14 to 20 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%.

    High: 86 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Scattered showers, then showers likely and possibly a thunderstorm after midnight.  Mostly cloudy, with a low around 74. East northeast wind around 16 mph.  Chance of precipitation is 60%.

    Low: 74 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a high near 85. East wind 14 to 16 mph, with gusts as high as 21 mph.  Chance of precipitation is 70%.

    High: 85 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Scattered showers.  Mostly cloudy, with a low around 75. East wind around 10 mph.  Chance of precipitation is 50%.

    Low: 75 °F

    Scattered
    Showers

  • Friday

    Friday: Scattered showers.  Mostly sunny, with a high near 85. East wind 11 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 50%.

    High: 85 °F

    Scattered
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 75. East wind around 10 mph.

    Low: 75 °F

    Partly Cloudy

Detailed Forecast

Overnight
Showers likely. Mostly cloudy, with a low around 74. East wind around 13 mph. Chance of precipitation is 60%.
Tuesday
Scattered showers. Partly sunny, with a high near 86. East wind 14 to 20 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 75. East wind around 14 mph. Chance of precipitation is 50%.
Wednesday
Showers likely, mainly before 9am. Partly sunny, with a high near 86. East wind 14 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Wednesday Night
Scattered showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 74. East northeast wind around 16 mph. Chance of precipitation is 60%.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 85. East wind 14 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 75. East wind around 10 mph. Chance of precipitation is 50%.
Friday
Scattered showers. Mostly sunny, with a high near 85. East wind 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Friday Night
Partly cloudy, with a low around 75. East wind around 10 mph.
Saturday
Sunny, with a high near 85.
Saturday Night
Clear, with a low around 75.
Sunday
Scattered showers. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Sunday Night
Clear, with a low around 75.
Monday
Sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Luis Muñoz Marín International Airport PR
 18.45°N 66.04°W (Elev. 7 ft)
4:11 am AST Jan 20, 2026
4am AST Jan 20, 2026-6pm AST Jan 26, 2026
 
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Additional Resources

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