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

Late January Extreme Cold; Watching East Coast Storm Threat This Weekend

The next blast of Arctic air surges south down the Plains, across the Great Lakes and through the Southeast and East Friday through Saturday. This could be longest duration of cold in several decades. Forecast models are being closely monitored for potential of another significant winter storm to impact the eastern United States this coming weekend. Confidence in coastal impacts has increased. Read More >

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

A Few Clouds

70°F

21°C

Humidity 88%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 28 Jan 5:56 am AST
Extended Forecast for

2 Miles WNW Lomas PR

  • Today

    Today: Scattered showers, mainly after 9am. Mostly sunny, with a high near 79. Light east southeast wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

    High: 79 °F

    Scattered
    Showers

  • Tonight

    Tonight: Isolated showers after midnight. Mostly clear, with a low around 66. Light east southeast wind. Chance of precipitation is 10%.

    Low: 66 °F

    Clear then
    Isolated
    Showers

  • Thursday

    Thursday: Isolated showers before 9am, then isolated showers after noon. Sunny, with a high near 79. Southeast wind 5 to 8 mph. Chance of precipitation is 20%.

    High: 79 °F

    Isolated
    Showers

  • Thursday Night

    Thursday Night: Isolated showers. Partly cloudy, with a low around 66. Light east wind. Chance of precipitation is 10%.

    Low: 66 °F

    Isolated
    Showers

  • Friday

    Friday: Scattered showers. Partly sunny, with a high near 78. Light east wind becoming east southeast 6 to 11 mph in the morning. Chance of precipitation is 40%.

    High: 78 °F

    Scattered
    Showers

  • Friday Night

    Friday Night: Scattered showers. Partly cloudy, with a low around 68. Southeast wind 5 to 7 mph. Chance of precipitation is 30%.

    Low: 68 °F

    Scattered
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 80. Southeast wind 6 to 10 mph.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Scattered showers. Mostly cloudy, with a low around 69. South southeast wind around 6 mph. Chance of precipitation is 40%.

    Low: 69 °F

    Scattered
    Showers

  • Sunday

    Sunday: Scattered showers, mainly after noon. Mostly sunny, with a high near 79. South southeast wind 6 to 11 mph. Chance of precipitation is 40%.

    High: 79 °F

    Mostly Sunny
    then
    Scattered
    Showers

Detailed Forecast

Today
Scattered showers, mainly after 9am. Mostly sunny, with a high near 79. Light east southeast wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Isolated showers after midnight. Mostly clear, with a low around 66. Light east southeast wind. Chance of precipitation is 10%.
Thursday
Isolated showers before 9am, then isolated showers after noon. Sunny, with a high near 79. Southeast wind 5 to 8 mph. Chance of precipitation is 20%.
Thursday Night
Isolated showers. Partly cloudy, with a low around 66. Light east wind. Chance of precipitation is 10%.
Friday
Scattered showers. Partly sunny, with a high near 78. Light east wind becoming east southeast 6 to 11 mph in the morning. Chance of precipitation is 40%.
Friday Night
Scattered showers. Partly cloudy, with a low around 68. Southeast wind 5 to 7 mph. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 80. Southeast wind 6 to 10 mph.
Saturday Night
Scattered showers. Mostly cloudy, with a low around 69. South southeast wind around 6 mph. Chance of precipitation is 40%.
Sunday
Scattered showers, mainly after noon. Mostly sunny, with a high near 79. South southeast wind 6 to 11 mph. Chance of precipitation is 40%.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Scattered showers. Mostly sunny, with a high near 78. Chance of precipitation is 30%.
Monday Night
Showers likely. Cloudy, with a low around 67. Chance of precipitation is 70%.
Tuesday
Showers likely. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Lomas PR
 18.28°N 65.93°W (Elev. 1220 ft)
Last Update:
3:59 am AST Jan 28, 2026
Forecast Valid:
6am AST Jan 28, 2026-6pm AST Feb 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation