Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Severe Thunderstorms and Heavy Rain in Upper Midwest

A slow moving frontal boundary from the central Pains to the Upper Midwest will bring a potential for severe thunderstorms and heavy rain. Rain amounts of 1-3 inches, with locally heavier amounts can be expected. The threat of severe weather moves into the Ohio Valley and Northeast on Tuesday. Monsoon moisture continues to bring the threat of flash flooding to the Southwest and southern Rockies. Read More >

Current conditions at

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

Overcast

78°F

26°C

Humidity 85%
Wind Speed SW 6 mph
Barometer 30.07 in (1016.2 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 21 Aug 4:51 am CDT
Extended Forecast for

San Antonio International Airport TX

  • Today

    Today: Mostly sunny and hot, with a high near 97. Heat index values as high as 102. Southeast wind 5 to 10 mph.

    Hot

    High: 97 °F

  • Tonight

    Tonight: Partly cloudy, with a low around 76. Southeast wind 5 to 10 mph.

    Partly Cloudy

    Low: 76 °F

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 97. Heat index values as high as 101. South southeast wind around 5 mph.

    Hot

    High: 97 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 76. Southeast wind around 5 mph.

    Partly Cloudy

    Low: 76 °F

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms.  Mostly sunny and hot, with a high near 99. South southwest wind around 5 mph becoming east in the afternoon.

    Slight Chance
    T-storms

    High: 99 °F

  • Wednesday
    Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 76. East wind around 5 mph becoming south after midnight.

    Slight Chance
    T-storms

    Low: 76 °F

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms.  Partly sunny, with a high near 96. East wind around 5 mph.

    Chance
    T-storms

    High: 96 °F

  • Thursday
    Night

    Thursday Night: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 75. East southeast wind around 5 mph.

    Slight Chance
    T-storms

    Low: 75 °F

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 94. East southeast wind around 5 mph.

    Chance
    T-storms

    High: 94 °F

Detailed Forecast

Today
Mostly sunny and hot, with a high near 97. Heat index values as high as 102. Southeast wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 76. Southeast wind 5 to 10 mph.
Tuesday
Mostly sunny and hot, with a high near 97. Heat index values as high as 101. South southeast wind around 5 mph.
Tuesday Night
Partly cloudy, with a low around 76. Southeast wind around 5 mph.
Wednesday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 99. South southwest wind around 5 mph becoming east in the afternoon.
Wednesday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76. East wind around 5 mph becoming south after midnight.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 96. East wind around 5 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. East southeast wind around 5 mph.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 94. East southeast wind around 5 mph.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 94.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 93.
Click Map For Forecast
Point Forecast:
San Antonio International Airport TX
 29.53°N 98.45°W (Elev. 771 ft)
3:26 am CDT Aug 21, 2017
5am CDT Aug 21, 2017-6pm CDT Aug 27, 2017
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database