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

Excessive Heat Spreads East; Many Areas with Heavy Rain Threats

Hot and muggy conditions are forecast to continue across the Midwest and Northeast, while spreading eastward. A frontal boundary bringing very heavy rains to the Upper Midwest will sag southward bringing cooler temperatures to areas to the north, including the city of Chicago. Heavy rains will also be possible along the Texas Gulf Coast from a tropical disturbance. Read More >

Hazardous Weather Conditions

Current conditions at

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

Light Rain

77°F

25°C

Humidity 90%
Wind Speed SE 8 mph
Barometer 29.89 in (1010.3 mb)
Dewpoint 74°F (23°C)
Visibility 7.00 mi
Heat Index78°F (26°C)
Last update 18 Jun 3:51 am CDT
Extended Forecast for

San Antonio TX

  • Overnight

    Overnight: A 20 percent chance of showers.  Mostly cloudy, with a low around 76. East wind around 5 mph.

    Slight Chance
    Showers

    Low: 76 °F

  • Monday

    Monday: A slight chance of showers, then showers and thunderstorms likely after 7am.  Mostly cloudy, with a high near 90. Heat index values as high as 97. East northeast wind 5 to 10 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Chance
    Showers then
    T-storms
    Likely

    High: 90 °F

  • Monday
    Night

    Monday Night: A 50 percent chance of showers and thunderstorms.  Cloudy, with a low around 74. East wind 5 to 10 mph.  New rainfall amounts between a quarter and half of an inch possible.

    Chance
    T-storms

    Low: 74 °F

  • Tuesday

    Tuesday: Showers and thunderstorms likely.  Cloudy, with a high near 87. East wind around 10 mph.  Chance of precipitation is 70%.

    T-storms
    Likely

    High: 87 °F

  • Tuesday
    Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms.  Cloudy, with a low around 74. East wind 5 to 10 mph.

    Chance
    T-storms

    Low: 74 °F

  • Wednesday

    Wednesday: Showers and thunderstorms likely.  Cloudy, with a high near 88. East wind 5 to 10 mph.  Chance of precipitation is 60%.

    T-storms
    Likely

    High: 88 °F

  • Wednesday
    Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 75. East southeast wind 5 to 10 mph.

    Chance
    T-storms

    Low: 75 °F

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 90. East wind around 10 mph.

    Chance
    T-storms

    High: 90 °F

  • Thursday
    Night

    Thursday Night: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 75. East southeast wind 5 to 10 mph.

    Slight Chance
    T-storms

    Low: 75 °F

Detailed Forecast

Overnight
A 20 percent chance of showers. Mostly cloudy, with a low around 76. East wind around 5 mph.
Monday
A slight chance of showers, then showers and thunderstorms likely after 7am. Mostly cloudy, with a high near 90. Heat index values as high as 97. East northeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 74. East wind 5 to 10 mph. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Showers and thunderstorms likely. Cloudy, with a high near 87. East wind around 10 mph. Chance of precipitation is 70%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 74. East wind 5 to 10 mph.
Wednesday
Showers and thunderstorms likely. Cloudy, with a high near 88. East wind 5 to 10 mph. Chance of precipitation is 60%.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. East southeast wind 5 to 10 mph.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 90. East wind around 10 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. East southeast wind 5 to 10 mph.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 91.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 76.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Saturday Night
Partly cloudy, with a low around 76.
Sunday
Mostly sunny, with a high near 94.
Click Map For Forecast
Point Forecast:
San Antonio TX
 29.46°N 98.5°W (Elev. 741 ft)
3:09 am CDT Jun 18, 2018
4am CDT Jun 18, 2018-6pm CDT Jun 24, 2018
 
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