Heat Wave Continues in the West; Critical Fire Weather Conditions in the High Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Critical fire weather conditions will continue over the next couple of days across portions of the High Plains as gusty winds and dry conditions persist. Read More >

Current conditions at

Ponce, Mercedita Airport (TJPS)

Lat: 18.02°NLon: 66.57°WElev: 26ft.

A Few Clouds

75°F

24°C

Humidity 78%
Wind Speed Vrbl 6 mph
Barometer 30.04 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 17 Mar 9:55 pm AST
Extended Forecast for

Santa Isabel PR

  • Tonight

    Tonight: Scattered showers, mainly after 3am.  Partly cloudy, with a low around 70. East northeast wind 8 to 10 mph.  Chance of precipitation is 40%.

    Low: 70 °F

    Mostly Clear
    then
    Scattered
    Showers

  • Wednesday

    Wednesday: Isolated showers before 9am.  Sunny, with a high near 88. East southeast wind 9 to 18 mph, with gusts as high as 31 mph.  Chance of precipitation is 20%.

    High: 88 °F

    Isolated
    Showers then
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 69. East northeast wind 6 to 9 mph.

    Low: 69 °F

    Mostly Clear

  • Thursday

    Thursday: Showers likely, mainly before noon.  Partly sunny, with a high near 87. Southeast wind 7 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%.

    High: 87 °F

    Showers
    Likely then
    Isolated
    Showers

  • Thursday Night

    Thursday Night: Isolated showers.  Partly cloudy, with a low around 69. East wind 6 to 10 mph.  Chance of precipitation is 20%.

    Low: 69 °F

    Isolated
    Showers

  • Friday

    Friday: Scattered showers, mainly before noon.  Mostly sunny, with a high near 86. South southeast wind around 10 mph.  Chance of precipitation is 40%.

    High: 86 °F

    Scattered
    Showers then
    Isolated
    Showers

  • Friday Night

    Friday Night: Scattered showers.  Mostly cloudy, with a low around 69. Calm wind becoming east northeast around 5 mph after midnight.  Chance of precipitation is 50%.

    Low: 69 °F

    Scattered
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 86. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers likely.  Cloudy, with a low around 68. Light and variable wind becoming northeast around 5 mph after midnight.  Chance of precipitation is 70%.

    Low: 68 °F

    Showers
    Likely

Detailed Forecast

Tonight
Scattered showers, mainly after 3am. Partly cloudy, with a low around 70. East northeast wind 8 to 10 mph. Chance of precipitation is 40%.
Wednesday
Isolated showers before 9am. Sunny, with a high near 88. East southeast wind 9 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 69. East northeast wind 6 to 9 mph.
Thursday
Showers likely, mainly before noon. Partly sunny, with a high near 87. Southeast wind 7 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Thursday Night
Isolated showers. Partly cloudy, with a low around 69. East wind 6 to 10 mph. Chance of precipitation is 20%.
Friday
Scattered showers, mainly before noon. Mostly sunny, with a high near 86. South southeast wind around 10 mph. Chance of precipitation is 40%.
Friday Night
Scattered showers. Mostly cloudy, with a low around 69. Calm wind becoming east northeast around 5 mph after midnight. Chance of precipitation is 50%.
Saturday
Mostly sunny, with a high near 86. Light and variable wind becoming south 5 to 10 mph in the morning.
Saturday Night
Showers likely. Cloudy, with a low around 68. Light and variable wind becoming northeast around 5 mph after midnight. Chance of precipitation is 70%.
Sunday
Showers likely, mainly after noon. Mostly cloudy, with a high near 86. Chance of precipitation is 60%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Monday
Scattered showers. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 68.
Tuesday
Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Santa Isabel PR
 17.98°N 66.4°W (Elev. 56 ft)
4:43 pm AST Mar 17, 2026
10pm AST Mar 17, 2026-6pm AST Mar 24, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database