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

Active Weather Pattern Expected From the Midwest to the Southern Plains; Dangerous Heat Likely in Southern Texas

A strong storm system will bring numerous to widespread severe thunderstorms across portions of the Midwest and Upper Great Lakes Tuesday. Tornadoes (a few strong), damaging winds and large hail are expected. Record high temperatures will be possible over southern Texas the next several days. This may lead to dangerous heat concerns especially for areas already without power. Read More >

Hazardous Weather Conditions

Current conditions at

King Airport, St. Thomas (TIST)

Lat: 18.34°NLon: 64.97°WElev: 23ft.

Partly Cloudy

N/A

Humidity NA
Wind Speed SE 14 mph
Barometer 29.96 in (1014.8 mb)
Dewpoint N/A
Visibility 10.00 mi
Last update 21 May 7:53 am AST
Extended Forecast for

4 Miles ESE Cruz Bay VI

Heat Advisory May 21, 10:00am until May 21, 06:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Isolated showers. Mostly sunny, with a high near 91. Heat index values as high as 103. East southeast wind around 16 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 91 °F

    Isolated
    Showers

  • Tonight

    Tonight: Scattered showers, with thunderstorms also possible after 3am. Mostly cloudy, with a low around 81. East wind 15 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 81 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers. Mostly sunny, with a high near 87. East wind 15 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    High: 87 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 79. East wind 10 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.

    Low: 79 °F

    Scattered
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Scattered showers. Mostly sunny, with a high near 87. East wind 16 to 21 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 87 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 80. East wind 11 to 15 mph. Chance of precipitation is 60%.

    Low: 80 °F

    Showers
    Likely

  • Friday

    Friday: Scattered showers. Partly sunny, with a high near 88. East southeast wind around 14 mph. Chance of precipitation is 40%.

    High: 88 °F

    Scattered
    Showers

  • Friday Night

    Friday Night: Scattered showers. Mostly cloudy, with a low around 81. East southeast wind 11 to 14 mph. Chance of precipitation is 40%.

    Low: 81 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers, mainly after noon. Partly sunny, with a high near 88. East southeast wind 9 to 11 mph. Chance of precipitation is 50%.

    High: 88 °F

    Mostly Sunny
    then
    Scattered
    Showers

Detailed Forecast

Today
Isolated showers. Mostly sunny, with a high near 91. Heat index values as high as 103. East southeast wind around 16 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Tonight
Scattered showers, with thunderstorms also possible after 3am. Mostly cloudy, with a low around 81. East wind 15 to 18 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Scattered showers. Mostly sunny, with a high near 87. East wind 15 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Wednesday Night
Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 79. East wind 10 to 17 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.
Thursday
Scattered showers. Mostly sunny, with a high near 87. East wind 16 to 21 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 80. East wind 11 to 15 mph. Chance of precipitation is 60%.
Friday
Scattered showers. Partly sunny, with a high near 88. East southeast wind around 14 mph. Chance of precipitation is 40%.
Friday Night
Scattered showers. Mostly cloudy, with a low around 81. East southeast wind 11 to 14 mph. Chance of precipitation is 40%.
Saturday
Scattered showers, mainly after noon. Partly sunny, with a high near 88. East southeast wind 9 to 11 mph. Chance of precipitation is 50%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 81. Chance of precipitation is 60%.
Sunday
Scattered showers. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Sunday Night
Scattered showers. Mostly cloudy, with a low around 81. Chance of precipitation is 40%.
Memorial Day
Mostly sunny, with a high near 90.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Cruz Bay VI
 18.31°N 64.71°W (Elev. 203 ft)
Last Update:
7:13 am AST May 21, 2024
Forecast Valid:
8am AST May 21, 2024-6pm AST May 27, 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