Remnants of Arthur and Heavy Rainfall Across the South; Severe Weather for the East

Potential life threatening flash flooding across the northern Gulf Coast states as the remnants of Arthur track across the area. Remember, turn around - don't drown. In addition, severe thunderstorms with tornadoes are possible with the circulation of this storm. The threat for more severe thunderstorms will occur across portions of the Northeast, mid-Atlantic and central Appalachian's. Read More >

Current conditions at

San Antonio, Stinson Municipal Airport (KSSF)

Lat: 29.34°NLon: 98.47°WElev: 574ft.

Mostly Cloudy with Haze

86°F

30°C

Humidity 77%
Wind Speed S 10 mph
Barometer 29.68 in (1003.7 mb)
Dewpoint 78°F (26°C)
Visibility 4.00 mi
Heat Index98°F (37°C)
Last update 18 Jun 10:53 am CDT
Extended Forecast for

4 Miles W San Antonio, Stinson Municipal Airport TX

Extreme Heat Warning June 18, 12:00pm until June 18, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  • Today

    Today: Sunny, with a high near 98. Heat index values as high as 114. South southeast wind around 10 mph, with gusts as high as 20 mph.

    High: 98 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 79. East southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 79 °F

    Increasing
    Clouds

  • Juneteenth

    Juneteenth: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly cloudy, with a high near 93. Heat index values as high as 107. East southeast wind around 10 mph, with gusts as high as 20 mph.

    High: 93 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 78. East southeast wind 10 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 40%.

    Low: 78 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 90. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 90 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 76. Southeast wind 10 to 15 mph.

    Low: 76 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 93. South wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 76. South southeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 76 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 93. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 93 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 98. Heat index values as high as 114. South southeast wind around 10 mph, with gusts as high as 20 mph.
Tonight
Increasing clouds, with a low around 79. East southeast wind around 10 mph, with gusts as high as 20 mph.
Juneteenth
A 30 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 93. Heat index values as high as 107. East southeast wind around 10 mph, with gusts as high as 20 mph.
Friday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 78. East southeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Saturday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 90. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76. Southeast wind 10 to 15 mph.
Sunday
Mostly sunny, with a high near 93. South wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 76. South southeast wind around 15 mph, with gusts as high as 25 mph.
Monday
Mostly sunny, with a high near 93. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 76.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Mostly sunny, with a high near 91.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W San Antonio, Stinson Municipal Airport TX
 29.32°N 98.53°W (Elev. 640 ft)
9:44 am CDT Jun 18, 2026
11am CDT Jun 18, 2026-6pm CDT Jun 24, 2026
 
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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