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.

81°F

27°C

Humidity 79%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 17 Aug 10:15 pm AST
Extended Forecast for

4 Miles NNW Guayanilla PR

  • Tonight

    Tonight: Mostly clear, with a low around 74. Northeast wind 3 to 6 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Scattered showers, mainly after 3pm. Increasing clouds, with a high near 89. Light east wind becoming southeast 6 to 11 mph in the morning. Chance of precipitation is 40%.

    High: 89 °F

    Sunny then
    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Isolated showers after 9pm. Partly cloudy, with a low around 75. Light east northeast wind. Chance of precipitation is 20%.

    Low: 75 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Isolated showers, then scattered showers and thunderstorms after noon. Mostly sunny, with a high near 88. Southeast wind 7 to 10 mph. Chance of precipitation is 50%.

    High: 88 °F

    Isolated
    Showers then
    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Isolated showers. Partly cloudy, with a low around 75. East wind around 7 mph. Chance of precipitation is 10%.

    Low: 75 °F

    Isolated
    Showers

  • Thursday

    Thursday: Isolated showers after noon. Mostly sunny, with a high near 89. East southeast wind 10 to 13 mph. Chance of precipitation is 20%.

    High: 89 °F

    Sunny then
    Isolated
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. East northeast wind 6 to 10 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 90. East southeast wind 7 to 14 mph.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 75. East northeast wind 3 to 6 mph.

    Low: 75 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 74. Northeast wind 3 to 6 mph.
Tuesday
Scattered showers, mainly after 3pm. Increasing clouds, with a high near 89. Light east wind becoming southeast 6 to 11 mph in the morning. Chance of precipitation is 40%.
Tuesday Night
Isolated showers after 9pm. Partly cloudy, with a low around 75. Light east northeast wind. Chance of precipitation is 20%.
Wednesday
Isolated showers, then scattered showers and thunderstorms after noon. Mostly sunny, with a high near 88. Southeast wind 7 to 10 mph. Chance of precipitation is 50%.
Wednesday Night
Isolated showers. Partly cloudy, with a low around 75. East wind around 7 mph. Chance of precipitation is 10%.
Thursday
Isolated showers after noon. Mostly sunny, with a high near 89. East southeast wind 10 to 13 mph. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 75. East northeast wind 6 to 10 mph.
Friday
Sunny, with a high near 90. East southeast wind 7 to 14 mph.
Friday Night
Mostly clear, with a low around 75. East northeast wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 89.
Saturday Night
Partly cloudy, with a low around 76.
Sunday
Sunny, with a high near 90.
Sunday Night
Mostly clear, with a low around 75.
Monday
Mostly sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Guayanilla PR
 18.07°N 66.82°W (Elev. 1093 ft)
Last Update:
3:46 pm AST Aug 17, 2026
Forecast Valid:
10pm AST Aug 17, 2026-6pm AST Aug 24, 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