Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. 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 70%
Wind Speed E 21 mph
Barometer 30.08 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 21 Jan 10:56 am AST
Extended Forecast for

2 Miles NNE Catano PR

  • Today

    Today: Scattered showers, mainly after noon.  Mostly sunny, with a high near 83. East wind 20 to 22 mph, with gusts as high as 30 mph.  Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

    High: 83 °F

    Scattered
    Showers

  • Tonight

    Tonight: Showers likely, mainly after 3am.  Mostly cloudy, with a low around 75. East northeast wind around 16 mph, with gusts as high as 23 mph.  Chance of precipitation is 60%.

    Low: 75 °F

    Showers
    Likely

  • Thursday

    Thursday: Scattered showers before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then scattered showers after 3pm.  Partly sunny, with a high near 84. East wind 16 to 18 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 84 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Scattered showers.  Mostly cloudy, with a low around 75. East wind 9 to 11 mph.  Chance of precipitation is 50%.

    Low: 75 °F

    Scattered
    Showers

  • Friday

    Friday: Scattered showers.  Partly sunny, with a high near 84. East wind 11 to 16 mph, with gusts as high as 22 mph.  Chance of precipitation is 40%.

    High: 84 °F

    Scattered
    Showers

  • Friday Night

    Friday Night: Scattered showers, mainly after midnight.  Partly cloudy, with a low around 75. East wind 8 to 11 mph.  Chance of precipitation is 30%.

    Low: 75 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers.  Mostly sunny, with a high near 83. East wind 9 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 30%.

    High: 83 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 75. East wind around 11 mph.

    Low: 75 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 84. East wind 11 to 15 mph, with gusts as high as 21 mph.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Today
Scattered showers, mainly after noon. Mostly sunny, with a high near 83. East wind 20 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Showers likely, mainly after 3am. Mostly cloudy, with a low around 75. East northeast wind around 16 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Thursday
Scattered showers before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then scattered showers after 3pm. Partly sunny, with a high near 84. East wind 16 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 75. East wind 9 to 11 mph. Chance of precipitation is 50%.
Friday
Scattered showers. Partly sunny, with a high near 84. East wind 11 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Friday Night
Scattered showers, mainly after midnight. Partly cloudy, with a low around 75. East wind 8 to 11 mph. Chance of precipitation is 30%.
Saturday
Scattered showers. Mostly sunny, with a high near 83. East wind 9 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 75. East wind around 11 mph.
Sunday
Mostly sunny, with a high near 84. East wind 11 to 15 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 75.
Monday
Mostly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 76.
Tuesday
Sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Catano PR
 18.47°N 66.1°W (Elev. 0 ft)
9:23 am AST Jan 21, 2026
11am AST Jan 21, 2026-6pm AST Jan 27, 2026
 
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