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

Ponce, Mercedita Airport (TJPS)

Lat: 18.02°NLon: 66.57°WElev: 26ft.

A Few Clouds

88°F

31°C

Humidity 1%
Wind Speed E 8 mph
Barometer 30.00 in
Dewpoint -22°F (-30°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 22 Sep 8:55 am AST
Extended Forecast for

Santa Isabel PR

  • Today

    Today: Scattered showers, mainly before noon. Mostly sunny, with a high near 91. Heat index values as high as 105. Southeast wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    High: 91 °F

    Scattered
    Showers

  • Tonight

    Tonight: Isolated showers after midnight. Partly cloudy, with a low around 77. East northeast wind around 7 mph. Chance of precipitation is 20%.

    Low: 77 °F

    Mostly Clear
    then Isolated
    Showers

  • Wednesday

    Wednesday: Isolated showers before 9am. Sunny, with a high near 92. Heat index values as high as 105. East southeast wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 10%.

    High: 92 °F

    Isolated
    Showers then
    Sunny

  • Wednesday Night

    Wednesday Night: Isolated showers. Partly cloudy, with a low around 76. East northeast wind 6 to 8 mph. Chance of precipitation is 20%.

    Low: 76 °F

    Isolated
    Showers

  • Thursday

    Thursday: Scattered showers, mainly after noon. Mostly sunny, with a high near 91. East southeast wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    High: 91 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Isolated showers. Partly cloudy, with a low around 77. East northeast wind 6 to 8 mph. Chance of precipitation is 20%.

    Low: 77 °F

    Isolated
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 91. Southeast wind 6 to 11 mph.

    High: 91 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 77. East northeast wind 5 to 8 mph.

    Low: 77 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 92. Southeast wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 92 °F

    Sunny

Detailed Forecast

Today
Scattered showers, mainly before noon. Mostly sunny, with a high near 91. Heat index values as high as 105. Southeast wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Tonight
Isolated showers after midnight. Partly cloudy, with a low around 77. East northeast wind around 7 mph. Chance of precipitation is 20%.
Wednesday
Isolated showers before 9am. Sunny, with a high near 92. Heat index values as high as 105. East southeast wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 10%.
Wednesday Night
Isolated showers. Partly cloudy, with a low around 76. East northeast wind 6 to 8 mph. Chance of precipitation is 20%.
Thursday
Scattered showers, mainly after noon. Mostly sunny, with a high near 91. East southeast wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Thursday Night
Isolated showers. Partly cloudy, with a low around 77. East northeast wind 6 to 8 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 91. Southeast wind 6 to 11 mph.
Friday Night
Partly cloudy, with a low around 77. East northeast wind 5 to 8 mph.
Saturday
Sunny, with a high near 92. Southeast wind 8 to 13 mph, with gusts as high as 22 mph.
Saturday Night
Clear, with a low around 77.
Sunday
Mostly sunny, with a high near 92.
Sunday Night
Partly cloudy, with a low around 77.
Monday
Scattered showers. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Santa Isabel PR
 17.98°N 66.4°W (Elev. 56 ft)
Last Update:
5:19 am AST Sep 22, 2026
Forecast Valid:
9am AST Sep 22, 2026-6pm AST Sep 28, 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