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

Another Arctic Blast in the East; Eastern U.S. Winter Storm

A powerful Arctic blast will bring dangerously cold, record low temperatures to the upper Ohio Valley, Mid-Atlantic, Gulf Coast and Southeast U.S. this weekend. A rapidly deepening storm will produce widespread heavy snow and wind from the southern Appalachians across the Carolinas and southern Virginia into Sunday. Storm-force winds and coastal flooding will be possible along the East Coast. Read More >

Hazardous Weather Conditions

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Mostly Cloudy

81°F

27°C

Humidity 79%
Wind Speed S 6 mph
Barometer 29.99 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 1 Feb 8:56 am AST
Extended Forecast for

Loiza PR

  • Today

    Today: Scattered showers before noon, then scattered showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 86. South southeast wind 9 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 86 °F

    Scattered
    Showers then
    Showers
    Likely

  • Tonight

    Tonight: Showers and possibly a thunderstorm, mainly before 3am, then scattered showers and thunderstorms after 3am. Low around 74. South wind 5 to 8 mph becoming west after midnight. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

    Low: 74 °F

    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 81. West wind 7 to 12 mph becoming north 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

    High: 81 °F

    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 72. North wind around 20 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.

    Low: 72 °F

    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 79. North northeast wind 18 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    High: 79 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 72. Northeast wind around 17 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    Low: 72 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely. Cloudy, with a high near 80. East wind around 16 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely. Cloudy, with a low around 73. East southeast wind 8 to 11 mph. Chance of precipitation is 70%.

    Low: 73 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, mainly after noon. Mostly cloudy, with a high near 84. East southeast wind 7 to 10 mph. Chance of precipitation is 60%.

    High: 84 °F

    Showers
    Likely

Detailed Forecast

Today
Scattered showers before noon, then scattered showers and thunderstorms between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 86. South southeast wind 9 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and possibly a thunderstorm, mainly before 3am, then scattered showers and thunderstorms after 3am. Low around 74. South wind 5 to 8 mph becoming west after midnight. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Monday
Showers and possibly a thunderstorm. High near 81. West wind 7 to 12 mph becoming north 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Monday Night
Showers and possibly a thunderstorm. Low around 72. North wind around 20 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.
Tuesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 79. North northeast wind 18 to 21 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 72. Northeast wind around 17 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Wednesday
Showers likely. Cloudy, with a high near 80. East wind around 16 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Wednesday Night
Showers likely. Cloudy, with a low around 73. East southeast wind 8 to 11 mph. Chance of precipitation is 70%.
Thursday
Showers likely, mainly after noon. Mostly cloudy, with a high near 84. East southeast wind 7 to 10 mph. Chance of precipitation is 60%.
Thursday Night
Scattered showers. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Friday
Scattered showers. Mostly cloudy, with a high near 84. Chance of precipitation is 50%.
Friday Night
Partly cloudy, with a low around 71.
Saturday
Showers likely. Mostly sunny, with a high near 81. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Loiza PR
 18.44°N 65.89°W (Elev. 3 ft)
Last Update:
7:46 am AST Feb 1, 2026
Forecast Valid:
9am AST Feb 1, 2026-6pm AST Feb 7, 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