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

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

Ponce, Mercedita Airport (TJPS)

Lat: 18.02°NLon: 66.57°WElev: 26ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Santa Isabel PR

  • Tonight

    Tonight: Scattered showers, mainly before midnight. Mostly clear, with a low around 71. East northeast wind around 9 mph. Chance of precipitation is 30%.

    Low: 71 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers, mainly between 9am and noon. Mostly sunny, with a high near 88. East wind 9 to 14 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 32 mph. Chance of precipitation is 30%.

    High: 88 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Mostly cloudy, with a low around 70. Northeast wind around 10 mph. Chance of precipitation is 40%.

    Low: 70 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers, mainly after noon. Mostly sunny, with a high near 88. East wind 8 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.

    High: 88 °F

    Isolated
    Showers then
    Scattered
    Showers

  • Thursday Night

    Thursday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 71. East northeast wind around 8 mph. Chance of precipitation is 40%.

    Low: 71 °F

    Scattered
    Showers

  • Friday

    Friday: Scattered showers, mainly before noon. Mostly sunny, with a high near 88. East wind 8 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.

    High: 88 °F

    Scattered
    Showers then
    Isolated
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 71. East northeast wind 6 to 8 mph.

    Low: 71 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 87. East southeast wind 6 to 15 mph, with gusts as high as 25 mph.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 71. East northeast wind around 8 mph.

    Low: 71 °F

    Clear

Detailed Forecast

Tonight
Scattered showers, mainly before midnight. Mostly clear, with a low around 71. East northeast wind around 9 mph. Chance of precipitation is 30%.
Wednesday
Scattered showers, mainly between 9am and noon. Mostly sunny, with a high near 88. East wind 9 to 14 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 32 mph. Chance of precipitation is 30%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 70. Northeast wind around 10 mph. Chance of precipitation is 40%.
Thursday
Scattered showers, mainly after noon. Mostly sunny, with a high near 88. East wind 8 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.
Thursday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 71. East northeast wind around 8 mph. Chance of precipitation is 40%.
Friday
Scattered showers, mainly before noon. Mostly sunny, with a high near 88. East wind 8 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.
Friday Night
Mostly clear, with a low around 71. East northeast wind 6 to 8 mph.
Saturday
Sunny, with a high near 87. East southeast wind 6 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Clear, with a low around 71. East northeast wind around 8 mph.
Sunday
Sunny, with a high near 89.
Sunday Night
Clear, with a low around 70.
Monday
Sunny, with a high near 87.
Monday Night
Clear, with a low around 70.
Tuesday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Santa Isabel PR
 17.98°N 66.4°W (Elev. 56 ft)
Last Update:
4:47 pm AST Jan 20, 2026
Forecast Valid:
11pm AST Jan 20, 2026-6pm AST Jan 27, 2026
 
Forecast Discussion
 
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Additional Resources

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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