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.

A Few Clouds

75°F

24°C

Humidity 83%
Wind Speed Calm
Barometer 29.99 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 19 Jan 4:56 am AST
Extended Forecast for

3 Miles NE Comerio PR

  • Overnight

    Overnight: Isolated showers.  Partly cloudy, with a low around 69. East wind around 5 mph.  Chance of precipitation is 10%.

    Low: 69 °F

    Isolated
    Showers

  • M.L.King Day

    M.L.King Day: Scattered showers, mainly after noon.  Mostly sunny, with a high near 79. Light east wind increasing to 6 to 11 mph in the morning.  Chance of precipitation is 30%.

    High: 79 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Scattered showers before 9pm, then scattered showers after midnight.  Partly cloudy, with a low around 68. Light east wind.  Chance of precipitation is 30%.

    Low: 68 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers, mainly after 3pm.  Mostly sunny, with a high near 79. Light east wind increasing to 8 to 13 mph in the morning.  Chance of precipitation is 40%.

    High: 79 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers.  Partly cloudy, with a low around 69. Light east wind.  Chance of precipitation is 30%.

    Low: 69 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers, mainly before noon.  Partly sunny, with a high near 77. East northeast wind 5 to 14 mph.  Chance of precipitation is 50%.

    High: 77 °F

    Scattered
    Showers then
    Isolated
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers.  Mostly cloudy, with a low around 69. Light east northeast wind.  Chance of precipitation is 40%.

    Low: 69 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers.  Mostly sunny, with a high near 77. East wind 5 to 10 mph.  Chance of precipitation is 50%.

    High: 77 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Scattered showers.  Partly cloudy, with a low around 69. Light east wind.  Chance of precipitation is 30%.

    Low: 69 °F

    Scattered
    Showers

Detailed Forecast

Overnight
Isolated showers. Partly cloudy, with a low around 69. East wind around 5 mph. Chance of precipitation is 10%.
M.L.King Day
Scattered showers, mainly after noon. Mostly sunny, with a high near 79. Light east wind increasing to 6 to 11 mph in the morning. Chance of precipitation is 30%.
Monday Night
Scattered showers before 9pm, then scattered showers after midnight. Partly cloudy, with a low around 68. Light east wind. Chance of precipitation is 30%.
Tuesday
Scattered showers, mainly after 3pm. Mostly sunny, with a high near 79. Light east wind increasing to 8 to 13 mph in the morning. Chance of precipitation is 40%.
Tuesday Night
Scattered showers. Partly cloudy, with a low around 69. Light east wind. Chance of precipitation is 30%.
Wednesday
Scattered showers, mainly before noon. Partly sunny, with a high near 77. East northeast wind 5 to 14 mph. Chance of precipitation is 50%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 69. Light east northeast wind. Chance of precipitation is 40%.
Thursday
Scattered showers. Mostly sunny, with a high near 77. East wind 5 to 10 mph. Chance of precipitation is 50%.
Thursday Night
Scattered showers. Partly cloudy, with a low around 69. Light east wind. Chance of precipitation is 30%.
Friday
Scattered showers. Mostly sunny, with a high near 79. Chance of precipitation is 40%.
Friday Night
Partly cloudy, with a low around 69.
Saturday
Sunny, with a high near 78.
Saturday Night
Clear, with a low around 69.
Sunday
Sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Comerio PR
 18.24°N 66.2°W (Elev. 1650 ft)
4:16 am AST Jan 19, 2026
5am AST Jan 19, 2026-6pm AST Jan 25, 2026
 
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