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

Hazardous Weather Conditions

Current conditions at

Ponce, Mercedita Airport (TJPS)

Lat: 18.02°NLon: 66.57°WElev: 26ft.

Partly Cloudy

88°F

31°C

Humidity 55%
Wind Speed E 6 G 14 mph
Barometer 30.00 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 4 Oct 9:35 am AST
Extended Forecast for

Guayanilla PR

Heat Advisory October 4, 10:00am until October 4, 04:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Scattered showers between noon and 3pm, then scattered showers and thunderstorms after 3pm. Increasing clouds, with a high near 92. Heat index values as high as 103. Southeast wind 6 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

    High: 92 °F

    Sunny then
    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers, mainly before 9pm. Partly cloudy, with a low around 75. East northeast wind around 6 mph. Chance of precipitation is 40%.

    Low: 75 °F

    Scattered
    Showers then
    Isolated
    Showers

  • Monday

    Monday: Scattered showers, mainly after 3pm. Increasing clouds, with a high near 93. Heat index values as high as 105. Southeast wind 5 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 93 °F

    Sunny then
    Scattered
    Showers

  • Monday Night

    Monday Night: Clear, with a low around 75. East northeast wind around 6 mph.

    Low: 75 °F

    Clear

  • Tuesday

    Tuesday: Scattered showers after noon. Mostly sunny, with a high near 93. East southeast wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 93 °F

    Sunny then
    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 76. Northeast wind 3 to 5 mph.

    Low: 76 °F

    Mostly Clear

  • Wednesday

    Wednesday: Scattered showers, mainly after noon. Mostly sunny, with a high near 91. Light east northeast wind becoming east southeast 5 to 9 mph in the morning. Chance of precipitation is 40%.

    High: 91 °F

    Mostly Sunny
    then
    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Partly cloudy, with a low around 75. Light east northeast wind. Chance of precipitation is 30%.

    Low: 75 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers. Mostly sunny, with a high near 92. East southeast wind 8 to 11 mph. Chance of precipitation is 30%.

    High: 92 °F

    Scattered
    Showers

Detailed Forecast

Today
Scattered showers between noon and 3pm, then scattered showers and thunderstorms after 3pm. Increasing clouds, with a high near 92. Heat index values as high as 103. Southeast wind 6 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Scattered showers, mainly before 9pm. Partly cloudy, with a low around 75. East northeast wind around 6 mph. Chance of precipitation is 40%.
Monday
Scattered showers, mainly after 3pm. Increasing clouds, with a high near 93. Heat index values as high as 105. Southeast wind 5 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday Night
Clear, with a low around 75. East northeast wind around 6 mph.
Tuesday
Scattered showers after noon. Mostly sunny, with a high near 93. East southeast wind 5 to 10 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 76. Northeast wind 3 to 5 mph.
Wednesday
Scattered showers, mainly after noon. Mostly sunny, with a high near 91. Light east northeast wind becoming east southeast 5 to 9 mph in the morning. Chance of precipitation is 40%.
Wednesday Night
Scattered showers. Partly cloudy, with a low around 75. Light east northeast wind. Chance of precipitation is 30%.
Thursday
Scattered showers. Mostly sunny, with a high near 92. East southeast wind 8 to 11 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 75.
Friday
Scattered showers. Mostly sunny, with a high near 93. Chance of precipitation is 30%.
Friday Night
Mostly clear, with a low around 75.
Saturday
Scattered showers. Mostly sunny, with a high near 93. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Guayanilla PR
 18.03°N 66.8°W (Elev. 259 ft)
Last Update:
3:54 am AST Oct 4, 2026
Forecast Valid:
9am AST Oct 4, 2026-6pm AST Oct 10, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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