Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

San Antonio, San Antonio International Airport (KSAT)

Lat: 29.53°NLon: 98.46°WElev: 807ft.

Overcast

56°F

13°C

Humidity 62%
Wind Speed E 5 mph
Barometer 30.22 in (1022.5 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 20 Jan 6:51 pm CST
Extended Forecast for

San Antonio International Airport TX

  • Tonight

    Tonight: A 30 percent chance of showers, mainly between midnight and 3am.  Patchy fog after 1am.  Otherwise, cloudy, with a low around 53. East wind around 5 mph becoming calm  after midnight.

    Low: 53 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 7am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 70. Calm wind becoming south southwest around 5 mph.

    High: 70 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53. Calm wind.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 74. Calm wind becoming south southeast around 5 mph in the morning.

    High: 74 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 59. South southeast wind around 5 mph.

    Low: 59 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers, mainly after noon.  Cloudy, with a high near 67. Southeast wind 5 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 67 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely.  Cloudy, with a low around 35. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%.

    Low: 35 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely, mainly before noon.  Cloudy, with a high near 38. North northeast wind around 15 mph, with gusts as high as 30 mph.  Chance of precipitation is 70%.

    High: 38 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of freezing rain.  Mostly cloudy, with a low around 21. North wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 40%.

    Low: 21 °F

    Chance
    Freezing Rain

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly between midnight and 3am. Patchy fog after 1am. Otherwise, cloudy, with a low around 53. East wind around 5 mph becoming calm after midnight.
Wednesday
Patchy fog before 7am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 70. Calm wind becoming south southwest around 5 mph.
Wednesday Night
Partly cloudy, with a low around 53. Calm wind.
Thursday
Partly sunny, with a high near 74. Calm wind becoming south southeast around 5 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 59. South southeast wind around 5 mph.
Friday
A 40 percent chance of showers, mainly after noon. Cloudy, with a high near 67. Southeast wind 5 to 10 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Showers likely. Cloudy, with a low around 35. North northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Saturday
Showers likely, mainly before noon. Cloudy, with a high near 38. North northeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Saturday Night
A chance of freezing rain. Mostly cloudy, with a low around 21. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Sunday
Partly sunny, with a high near 35.
Sunday Night
Partly cloudy, with a low around 21.
Monday
Mostly sunny, with a high near 45.
Monday Night
Mostly clear, with a low around 24.
Tuesday
Sunny, with a high near 53.
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ABOUT THIS FORECAST

 
Point Forecast:
San Antonio International Airport TX
 29.53°N 98.45°W (Elev. 771 ft)
5:46 pm CST Jan 20, 2026
7pm CST Jan 20, 2026-6pm CST Jan 27, 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