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, Stinson Municipal Airport (KSSF)

Lat: 29.34°NLon: 98.47°WElev: 574ft.

Light Rain

57°F

14°C

Humidity 90%
Wind Speed E 5 mph
Barometer 30.19 in (1022.5 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 20 Jan 9:53 pm CST
Extended Forecast for

3 Miles SSE San Antonio TX

  • Tonight

    Tonight: A 30 percent chance of showers, mainly between midnight and 3am.  Patchy fog after 1am.  Otherwise, cloudy, with a low around 54. East wind around 5 mph becoming calm  after midnight.

    Low: 54 °F

    Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 70. Calm wind becoming south around 5 mph.

    High: 70 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 54. Calm wind becoming northeast around 5 mph.

    Low: 54 °F

    Partly Cloudy

  • Thursday

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

    High: 74 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 60. Southeast wind around 5 mph.

    Low: 60 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 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 38. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%.

    Low: 38 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely, mainly before noon.  Cloudy, with a high near 40. North northeast wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%.

    High: 40 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of rain or freezing rain before midnight, then a chance of freezing rain.  Mostly cloudy, with a low around 22. North wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 40%.

    Low: 22 °F

    Chance
    Rain/Freezing
    Rain then
    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 54. East wind around 5 mph becoming calm after midnight.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 70. Calm wind becoming south around 5 mph.
Wednesday Night
Partly cloudy, with a low around 54. Calm wind becoming northeast around 5 mph.
Thursday
Partly sunny, with a high near 74. Northeast wind around 5 mph becoming south southeast in the afternoon.
Thursday Night
Mostly cloudy, with a low around 60. Southeast wind around 5 mph.
Friday
A 30 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 38. North northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Saturday
Showers likely, mainly before noon. Cloudy, with a high near 40. North northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.
Saturday Night
A chance of rain or freezing rain before midnight, then a chance of freezing rain. Mostly cloudy, with a low around 22. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Sunday
Partly sunny, with a high near 36.
Sunday Night
Partly cloudy, with a low around 23.
Monday
Mostly sunny, with a high near 45.
Monday Night
Mostly clear, with a low around 26.
Tuesday
Mostly sunny, with a high near 54.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE San Antonio TX
 29.41°N 98.48°W (Elev. 646 ft)
10:33 pm CST Jan 20, 2026
10pm 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