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

Widespread Heavy Rainfall to Continue Flooding Threat For South-Central U.S. This Week

Multiple days of heavy rainfall will likely continue to cause considerable flash and urban flooding impacts across portions of eastern Texas, Oklahoma, western Arkansas, and extreme western Louisiana this week. New and renewed widespread minor to isolated major river flooding is expected, and will continue into next week on slow-to-drain rivers. Read More >

Hazardous Weather Conditions

Current conditions at

San Antonio, Stinson Municipal Airport (KSSF)

Lat: 29.34°NLon: 98.47°WElev: 574ft.

A Few Clouds and Windy

26°C

78°F

Humidity 76%
Wind Speed SE 43 G 63 km/h
Barometer 1006.7 mb (29.76 in)
Dewpoint 21°C (70°F)
Visibility 16 km
Heat Index27°C (80°F)
Last update 17 May 11:53 pm CDT
Extended Forecast for

2 Miles SSE San Antonio TX

Flash Flood Watch until May 20, 01:00pm
Click here for hazard details and duration
Flash Flood Watch
  •  
    Flash Flood Watch until May 20, 01:00pm

    NOW until
    1:00pm Thu

    Flash Flood Watch

  • Overnight

    Overnight: A 40 percent chance of showers and thunderstorms. Some of the storms could be severe. Cloudy, with a low around 22. Southeast wind 15 to 25 km/h, with gusts as high as 35 km/h.

    Severe
    Thunderstorms

    Low: 22 °C

  • Tuesday

    Tuesday: Showers and thunderstorms, mainly after 1pm. High near 29. South southeast wind 20 to 25 km/h, with gusts as high as 40 km/h. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 cm possible.

    Chance
    T-storms then
    T-storms

    High: 29 °C

  • Tuesday
    Night

    Tuesday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 22. Southeast wind 15 to 25 km/h, with gusts as high as 35 km/h. Chance of precipitation is 60%. New rainfall amounts between 1 and 2 cm possible.

    T-storms
    Likely

    Low: 22 °C

  • Wednesday

    Wednesday: Showers and thunderstorms. Some of the storms could produce heavy rainfall. High near 27. Southeast wind 10 to 15 km/h, with gusts as high as 35 km/h. Chance of precipitation is 90%.

    Heavy Rain

    High: 27 °C

  • Wednesday
    Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 1am. Some of the storms could produce heavy rainfall. Cloudy, with a low around 19. East wind 10 to 15 km/h, with gusts as high as 30 km/h. Chance of precipitation is 60%.

    Heavy Rain

    Low: 19 °C

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 26. East southeast wind around 10 km/h.

    Chance
    T-storms

    High: 26 °C

  • Thursday
    Night

    Thursday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 21. East wind 10 to 15 km/h.

    Chance
    T-storms

    Low: 21 °C

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 28. East southeast wind 10 to 15 km/h, with gusts as high as 30 km/h. Chance of precipitation is 60%.

    Chance
    T-storms then
    T-storms
    Likely

    High: 28 °C

Detailed Forecast

Overnight
A 40 percent chance of showers and thunderstorms. Some of the storms could be severe. Cloudy, with a low around 22. Southeast wind 15 to 25 km/h, with gusts as high as 35 km/h.
Tuesday
Showers and thunderstorms, mainly after 1pm. High near 29. South southeast wind 20 to 25 km/h, with gusts as high as 40 km/h. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 cm possible.
Tuesday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 22. Southeast wind 15 to 25 km/h, with gusts as high as 35 km/h. Chance of precipitation is 60%. New rainfall amounts between 1 and 2 cm possible.
Wednesday
Showers and thunderstorms. Some of the storms could produce heavy rainfall. High near 27. Southeast wind 10 to 15 km/h, with gusts as high as 35 km/h. Chance of precipitation is 90%.
Wednesday Night
Showers and thunderstorms likely, mainly before 1am. Some of the storms could produce heavy rainfall. Cloudy, with a low around 19. East wind 10 to 15 km/h, with gusts as high as 30 km/h. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms. Cloudy, with a high near 26. East southeast wind around 10 km/h.
Thursday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 21. East wind 10 to 15 km/h.
Friday
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 28. East southeast wind 10 to 15 km/h, with gusts as high as 30 km/h. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 22. East southeast wind 15 to 20 km/h, with gusts as high as 30 km/h.
Saturday
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 27. Chance of precipitation is 70%.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 22.
Sunday
Showers and thunderstorms likely. Mostly cloudy, with a high near 28. Chance of precipitation is 60%.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 21.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 28.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
2 Miles SSE San Antonio TX
 29.44°N 98.5°W (Elev. 198 m)
Last Update:
11:10 pm CDT May 17, 2021
Forecast Valid:
12am CDT May 18, 2021-6pm CDT May 23, 2021
 
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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