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

Tracking Late Season Winter Storms; Unusual Early-Season Heat Wave in the Southwest

Heavy snow and high winds continue in the Great Lakes and Northeast. A moderate atmospheric river will continue to bring heavy precipitation to the Pacific Northwest and northern Rockies. A major winter storm will develop across the northern High Plains tonight into Saturday and rapidly strengthen as it moves into the Great Lakes on Sunday. Above-average temperatures expected in the Southwest. Read More >

Current conditions at

Ponce, Mercedita Airport (TJPS)

Lat: 18.02°NLon: 66.57°WElev: 26ft.

Fair

72°F

22°C

Humidity 83%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 14 Mar 6:35 am AST
Extended Forecast for

Santa Isabel PR

  • Today

    Today: Isolated showers between 9am and noon. Sunny, with a high near 88. East southeast wind 6 to 11 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 32 mph. Chance of precipitation is 10%.

    High: 88 °F

    Isolated
    Showers then
    Sunny

  • Tonight

    Tonight: Isolated showers before midnight, then isolated showers after 3am. Mostly clear, with a low around 69. East northeast wind 7 to 9 mph. Chance of precipitation is 10%.

    Low: 69 °F

    Isolated
    Showers

  • Sunday

    Sunday: Isolated showers before noon, then isolated showers after 3pm. Mostly sunny, with a high near 88. East southeast wind 9 to 14 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 33 mph. Chance of precipitation is 20%.

    High: 88 °F

    Isolated
    Showers

  • Sunday Night

    Sunday Night: Isolated showers after midnight. Mostly clear, with a low around 70. East northeast wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 10%.

    Low: 70 °F

    Mostly Clear
    then Isolated
    Showers

  • Monday

    Monday: Isolated showers. Mostly sunny, with a high near 87. East wind 15 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    High: 87 °F

    Isolated
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 71. East wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: 71 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87. East southeast wind 13 to 18 mph, with gusts as high as 30 mph.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 69. East northeast wind 8 to 10 mph.

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87. East southeast wind 8 to 18 mph, with gusts as high as 31 mph.

    High: 87 °F

    Mostly Sunny

Detailed Forecast

Today
Isolated showers between 9am and noon. Sunny, with a high near 88. East southeast wind 6 to 11 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 32 mph. Chance of precipitation is 10%.
Tonight
Isolated showers before midnight, then isolated showers after 3am. Mostly clear, with a low around 69. East northeast wind 7 to 9 mph. Chance of precipitation is 10%.
Sunday
Isolated showers before noon, then isolated showers after 3pm. Mostly sunny, with a high near 88. East southeast wind 9 to 14 mph increasing to 15 to 20 mph in the morning. Winds could gust as high as 33 mph. Chance of precipitation is 20%.
Sunday Night
Isolated showers after midnight. Mostly clear, with a low around 70. East northeast wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 10%.
Monday
Isolated showers. Mostly sunny, with a high near 87. East wind 15 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 71. East wind 10 to 14 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 87. East southeast wind 13 to 18 mph, with gusts as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 69. East northeast wind 8 to 10 mph.
Wednesday
Mostly sunny, with a high near 87. East southeast wind 8 to 18 mph, with gusts as high as 31 mph.
Wednesday Night
Mostly clear, with a low around 69.
Thursday
Mostly sunny, with a high near 87.
Thursday Night
Clear, with a low around 69.
Friday
Sunny, with a high near 86.
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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:
5:09 am AST Mar 14, 2026
Forecast Valid:
6am AST Mar 14, 2026-6pm AST Mar 20, 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