Severe Thunderstorms Possible for the Great Lakes into Ohio Valley; Heavy to Excessive Rainfall Over the Southern Plains

Severe thunderstorms will race along a cold front from the Upper Mississippi Valley into the Great Lakes and Ohio Valley with the main threat being damaging winds. The tail end of this front will possibly produce heavy to excessive rainfall across the southern Plains into the Lower Mississippi Valley through Saturday. Finally, Major-to-record river flooding continues across the Carolinas. Read More >

Hazardous Weather Conditions

Current conditions at

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

Overcast

78°F

26°C

Humidity 90%
Wind Speed SE 14 mph
Barometer 29.93 in (1011.8 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 21 Sep 2:51 am CDT
Extended Forecast for

San Antonio TX

  • Overnight

    Overnight: A 50 percent chance of showers and thunderstorms.  Cloudy, with a low around 76. South southeast wind around 10 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Chance
    T-storms

    Low: 76 °F

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 7am.  Cloudy, with a high near 87. South southeast wind around 10 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    T-storms
    Likely

    High: 87 °F

  • Friday
    Night

    Friday Night: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 75. East southeast wind 5 to 10 mph.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Chance
    T-storms

    Low: 75 °F

  • Saturday

    Saturday: Showers and thunderstorms.  High near 85. Southeast wind around 5 mph becoming north in the afternoon.  Chance of precipitation is 80%.

    T-storms

    High: 85 °F

  • Saturday
    Night

    Saturday Night: Showers and thunderstorms likely.  Cloudy, with a low around 70. North wind around 5 mph.  Chance of precipitation is 60%.

    T-storms
    Likely

    Low: 70 °F

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 83. North northeast wind around 5 mph.

    Chance
    T-storms

    High: 83 °F

  • Sunday
    Night

    Sunday Night: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 72. East northeast wind around 5 mph.

    Chance
    T-storms

    Low: 72 °F

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 87. East northeast wind around 5 mph becoming south southeast in the afternoon.

    Chance
    T-storms

    High: 87 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 73. South southeast wind 5 to 10 mph.

    Chance
    T-storms

    Low: 73 °F

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 76. South southeast wind around 10 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and thunderstorms likely, mainly after 7am. Cloudy, with a high near 87. South southeast wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. East southeast wind 5 to 10 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and thunderstorms. High near 85. Southeast wind around 5 mph becoming north in the afternoon. Chance of precipitation is 80%.
Saturday Night
Showers and thunderstorms likely. Cloudy, with a low around 70. North wind around 5 mph. Chance of precipitation is 60%.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83. North northeast wind around 5 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. East northeast wind around 5 mph.
Monday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 87. East northeast wind around 5 mph becoming south southeast in the afternoon.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. South southeast wind 5 to 10 mph.
Tuesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 84.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.
Click Map For Forecast
Point Forecast:
San Antonio TX
 29.46°N 98.53°W (Elev. 699 ft)
11:43 pm CDT Sep 20, 2018
3am CDT Sep 21, 2018-6pm CDT Sep 27, 2018
 
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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