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

Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

King Airport, St. Thomas (TIST)

Lat: 18.34°NLon: 64.97°WElev: 23ft.

Fair

82°F

28°C

Humidity 84%
Wind Speed E 18 G 25 mph
Barometer 30.06 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 15 Jul 10:53 pm AST
Extended Forecast for

Culebra PR

  • Tonight

    Tonight: Scattered showers, mainly after 3am. Partly cloudy, with a low around 80. East wind around 22 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.

    Low: 80 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 91. Heat index values as high as 103. East wind around 21 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.

    High: 91 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Scattered showers. Partly cloudy, with a low around 80. East wind 18 to 20 mph. Chance of precipitation is 50%.

    Low: 80 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers, mainly before noon. Widespread haze after noon. Mostly sunny, with a high near 91. Heat index values as high as 103. East wind 18 to 21 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    High: 91 °F

    Scattered
    Showers then
    Isolated
    Showers

  • Thursday Night

    Thursday Night: Widespread haze. Mostly clear, with a low around 80. East wind 15 to 17 mph, with gusts as high as 22 mph.

    Low: 80 °F

    Haze

  • Friday

    Friday: Isolated showers. Widespread haze. Mostly sunny, with a high near 91. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 91 °F

    Isolated
    Showers

  • Friday Night

    Friday Night: Scattered showers. Mostly cloudy, with a low around 79. East wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 79 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers, mainly before noon. Mostly sunny, with a high near 91. East southeast wind 11 to 13 mph. Chance of precipitation is 40%.

    High: 91 °F

    Scattered
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Scattered showers. Mostly cloudy, with a low around 80. East wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    Low: 80 °F

    Scattered
    Showers

Detailed Forecast

Tonight
Scattered showers, mainly after 3am. Partly cloudy, with a low around 80. East wind around 22 mph, with gusts as high as 28 mph. Chance of precipitation is 50%.
Wednesday
Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 91. Heat index values as high as 103. East wind around 21 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.
Wednesday Night
Scattered showers. Partly cloudy, with a low around 80. East wind 18 to 20 mph. Chance of precipitation is 50%.
Thursday
Scattered showers, mainly before noon. Widespread haze after noon. Mostly sunny, with a high near 91. Heat index values as high as 103. East wind 18 to 21 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Thursday Night
Widespread haze. Mostly clear, with a low around 80. East wind 15 to 17 mph, with gusts as high as 22 mph.
Friday
Isolated showers. Widespread haze. Mostly sunny, with a high near 91. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday Night
Scattered showers. Mostly cloudy, with a low around 79. East wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Saturday
Scattered showers, mainly before noon. Mostly sunny, with a high near 91. East southeast wind 11 to 13 mph. Chance of precipitation is 40%.
Saturday Night
Scattered showers. Mostly cloudy, with a low around 80. East wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Sunday
Mostly sunny, with a high near 91.
Sunday Night
Partly cloudy, with a low around 80.
Monday
Scattered showers. Partly sunny, with a high near 91. Chance of precipitation is 40%.
Monday Night
Scattered showers. Mostly cloudy, with a low around 81. Chance of precipitation is 50%.
Tuesday
Mostly sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Culebra PR
 18.31°N 65.3°W (Elev. 92 ft)
Last Update:
10:02 am AST Jul 15, 2025
Forecast Valid:
11pm AST Jul 15, 2025-6pm AST Jul 22, 2025
 
Forecast Discussion
 
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Additional Resources

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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