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

Hazardous Weather Conditions

Current conditions at

Ponce, Mercedita Airport (TJPS)

Lat: 18.02°NLon: 66.57°WElev: 26ft.

Fair

75°F

24°C

Humidity 83%
Wind Speed Calm
Barometer 29.98 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 18 Aug 6:30 am AST
Extended Forecast for

2 Miles NW Guayanilla PR

Heat Advisory August 18, 10:00am until August 18, 05:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Scattered showers, mainly after 3pm. Mostly sunny, with a high near 94. Heat index values as high as 105. Light east northeast wind becoming east southeast 6 to 11 mph in the morning. Chance of precipitation is 30%.

    High: 94 °F

    Sunny then
    Scattered
    Showers

  • Tonight

    Tonight: Isolated showers between midnight and 3am. Mostly clear, with a low around 76. East northeast wind 3 to 6 mph. Chance of precipitation is 10%.

    Low: 76 °F

    Mostly Clear
    then Isolated
    Showers

  • Wednesday

    Wednesday: Isolated showers, then scattered showers and thunderstorms after noon. Mostly sunny, with a high near 92. Heat index values as high as 105. Southeast wind 9 to 13 mph. Chance of precipitation is 40%.

    High: 92 °F

    Isolated
    Showers then
    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Isolated showers. Partly cloudy, with a low around 77. East wind around 7 mph. Chance of precipitation is 10%.

    Low: 77 °F

    Isolated
    Showers

  • Thursday

    Thursday: Isolated showers after noon. Mostly sunny, with a high near 93. East southeast wind 9 to 14 mph. Chance of precipitation is 10%.

    High: 93 °F

    Sunny then
    Isolated
    Showers

  • Thursday Night

    Thursday Night: Clear, with a low around 76. East wind 6 to 10 mph.

    Low: 76 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 94. East southeast wind 7 to 15 mph, with gusts as high as 20 mph.

    High: 94 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. East northeast wind 3 to 8 mph.

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94. East southeast wind 5 to 13 mph.

    High: 94 °F

    Sunny

Detailed Forecast

Today
Scattered showers, mainly after 3pm. Mostly sunny, with a high near 94. Heat index values as high as 105. Light east northeast wind becoming east southeast 6 to 11 mph in the morning. Chance of precipitation is 30%.
Tonight
Isolated showers between midnight and 3am. Mostly clear, with a low around 76. East northeast wind 3 to 6 mph. Chance of precipitation is 10%.
Wednesday
Isolated showers, then scattered showers and thunderstorms after noon. Mostly sunny, with a high near 92. Heat index values as high as 105. Southeast wind 9 to 13 mph. Chance of precipitation is 40%.
Wednesday Night
Isolated showers. Partly cloudy, with a low around 77. East wind around 7 mph. Chance of precipitation is 10%.
Thursday
Isolated showers after noon. Mostly sunny, with a high near 93. East southeast wind 9 to 14 mph. Chance of precipitation is 10%.
Thursday Night
Clear, with a low around 76. East wind 6 to 10 mph.
Friday
Sunny, with a high near 94. East southeast wind 7 to 15 mph, with gusts as high as 20 mph.
Friday Night
Mostly clear, with a low around 76. East northeast wind 3 to 8 mph.
Saturday
Sunny, with a high near 94. East southeast wind 5 to 13 mph.
Saturday Night
Partly cloudy, with a low around 76.
Sunday
Sunny, with a high near 94.
Sunday Night
Clear, with a low around 76.
Monday
Scattered showers. Mostly sunny, with a high near 94. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Guayanilla PR
 18.05°N 66.81°W (Elev. 256 ft)
Last Update:
4:07 am AST Aug 18, 2026
Forecast Valid:
6am AST Aug 18, 2026-6pm AST Aug 24, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation