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

Severe Storms in the Upper Midwest and Northern Plains Saturday; Increasing Heat Across the South

Scattered severe thunderstorms capable of producing damaging winds, large to very large hail and a couple of tornadoes will be possible Saturday afternoon in the Upper Midwest and Great Plains. Stronger storms may produce heavy to excessive rainfall. Simmering heat will impact areas from the Southwest to the Gulf Coast and Southeast this weekend. Heat indices may exceed 100 degrees. Read More >

Hazardous Weather Conditions

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

A Few Clouds

83°F

28°C

Humidity 79%
Wind Speed S 3 mph
Barometer 29.98 in (1015.2 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 14 Jun 11:56 pm AST
Extended Forecast for

Palmer PR

Excessive Heat Watch June 15, 10:00am until June 15, 06:00pm
Click here for hazard details and duration
Excessive Heat Watch

  • Overnight

    Overnight: Scattered showers. Mostly cloudy, with a low around 76. South southeast wind around 8 mph. Chance of precipitation is 50%.

    Low: 76 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers, mainly before 3pm. Partly sunny, with a high near 94. Heat index values as high as 106. Light and variable wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.

    High: 94 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly after 3am. Partly cloudy, with a low around 80. South southeast wind around 7 mph. Chance of precipitation is 60%.

    Low: 80 °F

    Showers
    Likely

  • Sunday

    Sunday: Scattered showers, with thunderstorms also possible after noon. Partly sunny, with a high near 92. Heat index values as high as 105. East southeast wind 6 to 11 mph. Chance of precipitation is 50%.

    High: 92 °F

    Scattered
    Showers

  • Sunday Night

    Sunday Night: Scattered showers. Mostly cloudy, with a low around 79. South southeast wind 5 to 9 mph. Chance of precipitation is 40%.

    Low: 79 °F

    Scattered
    Showers

  • Monday

    Monday: Isolated showers. Mostly sunny, with a high near 92. Light and variable wind becoming east 5 to 8 mph in the afternoon. Chance of precipitation is 20%.

    High: 92 °F

    Isolated
    Showers

  • Monday Night

    Monday Night: Scattered showers. Mostly cloudy, with a low around 79. East northeast wind 5 to 7 mph becoming southeast after midnight. Chance of precipitation is 40%.

    Low: 79 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers. Partly sunny, with a high near 90. East wind 5 to 10 mph. Chance of precipitation is 40%.

    High: 90 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers. Mostly cloudy, with a low around 79. East southeast wind around 9 mph. Chance of precipitation is 40%.

    Low: 79 °F

    Scattered
    Showers

Detailed Forecast

Overnight
Scattered showers. Mostly cloudy, with a low around 76. South southeast wind around 8 mph. Chance of precipitation is 50%.
Saturday
Scattered showers, mainly before 3pm. Partly sunny, with a high near 94. Heat index values as high as 106. Light and variable wind becoming southeast 10 to 15 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 50%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Showers likely, mainly after 3am. Partly cloudy, with a low around 80. South southeast wind around 7 mph. Chance of precipitation is 60%.
Sunday
Scattered showers, with thunderstorms also possible after noon. Partly sunny, with a high near 92. Heat index values as high as 105. East southeast wind 6 to 11 mph. Chance of precipitation is 50%.
Sunday Night
Scattered showers. Mostly cloudy, with a low around 79. South southeast wind 5 to 9 mph. Chance of precipitation is 40%.
Monday
Isolated showers. Mostly sunny, with a high near 92. Light and variable wind becoming east 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Monday Night
Scattered showers. Mostly cloudy, with a low around 79. East northeast wind 5 to 7 mph becoming southeast after midnight. Chance of precipitation is 40%.
Tuesday
Scattered showers. Partly sunny, with a high near 90. East wind 5 to 10 mph. Chance of precipitation is 40%.
Tuesday Night
Scattered showers. Mostly cloudy, with a low around 79. East southeast wind around 9 mph. Chance of precipitation is 40%.
Juneteenth
Scattered showers. Partly sunny, with a high near 92. Chance of precipitation is 50%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 78. Chance of precipitation is 50%.
Thursday
Scattered showers. Partly sunny, with a high near 90. Chance of precipitation is 50%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 80. Chance of precipitation is 60%.
Friday
Scattered showers. Partly sunny, with a high near 91. Chance of precipitation is 50%.
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Palmer PR
 18.37°N 65.78°W (Elev. 75 ft)
Last Update:
8:58 pm AST Jun 14, 2024
Forecast Valid:
12am AST Jun 15, 2024-6pm AST Jun 21, 2024
 
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