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

Hazardous Weather Conditions

Current conditions at

St. Croix (TISX)

Lat: 17.7°NLon: 64.81°WElev: 62ft.

Partly Cloudy

88°F

31°C

Humidity 66%
Wind Speed SE 12 mph
Barometer 29.99 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 20 Sep 9:53 am AST
Extended Forecast for

3 Miles S Christiansted VI

Heat Advisory September 20, 10:48am until September 20, 03:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 20, 10:48am until September 20, 03:00pm

    NOW until 3:00pm Sun

    Heat Advisory

  • Today

    High: 90 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 79. East southeast wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 79 °F

    Scattered
    Showers then
    Showers
    Likely

  • Monday

    Monday: Scattered showers, mainly after noon. Partly sunny, with a high near 90. Heat index values as high as 103. East southeast wind around 11 mph. Chance of precipitation is 40%.

    High: 90 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Scattered showers. Partly cloudy, with a low around 80. East wind 9 to 11 mph. Chance of precipitation is 30%.

    Low: 80 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers. Mostly sunny, with a high near 90. East wind around 14 mph. Chance of precipitation is 30%.

    High: 90 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Isolated showers. Partly cloudy, with a low around 79. East wind 13 to 15 mph. Chance of precipitation is 20%.

    Low: 79 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Scattered showers. Mostly sunny, with a high near 90. East wind around 11 mph. Chance of precipitation is 30%.

    High: 90 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Partly cloudy, with a low around 79. East wind around 11 mph. Chance of precipitation is 30%.

    Low: 79 °F

    Scattered
    Showers

Detailed Forecast

Today
Scattered showers. Mostly sunny, with a high near 90. Heat index values as high as 103. Southeast wind around 11 mph. Chance of precipitation is 30%.
Tonight
Scattered showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 79. East southeast wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Scattered showers, mainly after noon. Partly sunny, with a high near 90. Heat index values as high as 103. East southeast wind around 11 mph. Chance of precipitation is 40%.
Monday Night
Scattered showers. Partly cloudy, with a low around 80. East wind 9 to 11 mph. Chance of precipitation is 30%.
Tuesday
Scattered showers. Mostly sunny, with a high near 90. East wind around 14 mph. Chance of precipitation is 30%.
Tuesday Night
Isolated showers. Partly cloudy, with a low around 79. East wind 13 to 15 mph. Chance of precipitation is 20%.
Wednesday
Scattered showers. Mostly sunny, with a high near 90. East wind around 11 mph. Chance of precipitation is 30%.
Wednesday Night
Scattered showers. Partly cloudy, with a low around 79. East wind around 11 mph. Chance of precipitation is 30%.
Thursday
Scattered showers. Partly sunny, with a high near 90. East southeast wind around 14 mph. Chance of precipitation is 40%.
Thursday Night
Scattered showers. Mostly cloudy, with a low around 80. Chance of precipitation is 50%.
Friday
Scattered showers. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Friday Night
Scattered showers. Partly cloudy, with a low around 80. Chance of precipitation is 30%.
Saturday
Scattered showers. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Christiansted VI
 17.71°N 64.71°W (Elev. 3 ft)
Last Update:
7:36 am AST Sep 20, 2026
Forecast Valid:
10am AST Sep 20, 2026-6pm AST Sep 26, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation