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

Severe Thunderstorm and Excessive Rainfall Potential for the Central U.S. Today

Severe thunderstorms with a threat for large hail, isolated damaging winds and possibly a tornado are expected in parts of eastern Colorado today from mid afternoon to early evening. Several days of heavy rainfall will begin today over the western Gulf Coast where Flood Watches and excessive rainfall outlooks have been issued for today, Saturday, and Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Port Aransas, Mustang Beach Airport (KRAS)

Lat: 27.81°NLon: 97.09°WElev: 7ft.

Partly Cloudy

79°F

26°C

Humidity 76%
Wind Speed SE 8 mph
Barometer 29.95 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 21 May 2:55 pm CDT
Extended Forecast for

Gregory TX

Flood Watch May 21, 03:24pm until May 25, 07:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch May 21, 03:24pm until May 25, 07:00pm

    NOW until 7:00pm Mon

    Flood Watch

  • This Afternoon

    High: 85 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 74. South wind 3 to 7 mph.

    Low: 74 °F

    Chance
    T-storms

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly between 2pm and 3pm. Sunny, with a high near 86. Heat index values as high as 97. Light south southwest wind becoming south southeast 6 to 11 mph in the morning.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers, with thunderstorms also possible after 1am. Increasing clouds, with a low around 77. South southeast wind 7 to 10 mph. Chance of precipitation is 30%.

    Low: 77 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 85. Southeast wind 7 to 11 mph. Chance of precipitation is 80%.

    High: 85 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm. Low around 75. Southeast wind 5 to 9 mph. Chance of precipitation is 80%.

    Low: 75 °F

    Showers

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. East southeast wind 5 to 8 mph. Chance of precipitation is 70%.

    High: 85 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. East wind 3 to 6 mph.

    Low: 74 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. Heat index values as high as 92. South southeast wind around 9 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 74. South wind 3 to 7 mph.
Friday
A 30 percent chance of showers and thunderstorms, mainly between 2pm and 3pm. Sunny, with a high near 86. Heat index values as high as 97. Light south southwest wind becoming south southeast 6 to 11 mph in the morning.
Friday Night
A chance of showers, with thunderstorms also possible after 1am. Increasing clouds, with a low around 77. South southeast wind 7 to 10 mph. Chance of precipitation is 30%.
Saturday
Showers and possibly a thunderstorm. High near 85. Southeast wind 7 to 11 mph. Chance of precipitation is 80%.
Saturday Night
Showers and possibly a thunderstorm. Low around 75. Southeast wind 5 to 9 mph. Chance of precipitation is 80%.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. East southeast wind 5 to 8 mph. Chance of precipitation is 70%.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. East wind 3 to 6 mph.
Memorial Day
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. North northeast wind 5 to 7 mph becoming east southeast in the afternoon.
Monday Night
Partly cloudy, with a low around 76.
Tuesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 78.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gregory TX
 27.93°N 97.3°W
Last Update:
2:46 pm CDT May 21, 2026
Forecast Valid:
3pm CDT May 21, 2026-6pm CDT May 27, 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