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.

Fog/Mist

58°F

14°C

Humidity 97%
Wind Speed Calm
Barometer 30.13 in (1019.0 mb)
Dewpoint 57°F (14°C)
Visibility 4.00 mi
Last update 21 Jan 4:51 am CST
Extended Forecast for

3 Miles NE Leon Valley TX

  • Overnight

    Overnight: A 20 percent chance of showers.  Patchy fog.  Otherwise, cloudy, with a low around 53. Calm wind.

    Low: 53 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: A slight chance of showers between 9am and noon.  Patchy fog before 8am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 69. Calm wind becoming south southwest around 5 mph.  Chance of precipitation is 20%.

    High: 69 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. Calm wind becoming north around 5 mph after midnight.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 72. North northeast wind around 5 mph becoming south southeast in the afternoon.

    High: 72 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 57. Southeast wind around 5 mph.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 3pm.  Cloudy, with a high near 68. South southeast wind 5 to 10 mph becoming northeast in the afternoon.  Chance of precipitation is 50%.

    High: 68 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: Showers.  Low around 32. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 80%.

    Low: 32 °F

    Showers

  • Saturday

    Saturday: Showers.  High near 37. North northeast wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 80%.

    High: 37 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of freezing rain.  Mostly cloudy, with a low around 20. North wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 50%.

    Low: 20 °F

    Chance
    Freezing Rain

Detailed Forecast

Overnight
A 20 percent chance of showers. Patchy fog. Otherwise, cloudy, with a low around 53. Calm wind.
Wednesday
A slight chance of showers between 9am and noon. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 69. Calm wind becoming south southwest around 5 mph. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 51. Calm wind becoming north around 5 mph after midnight.
Thursday
Partly sunny, with a high near 72. North northeast wind around 5 mph becoming south southeast in the afternoon.
Thursday Night
Mostly cloudy, with a low around 57. Southeast wind around 5 mph.
Friday
A chance of showers, with thunderstorms also possible after 3pm. Cloudy, with a high near 68. South southeast wind 5 to 10 mph becoming northeast in the afternoon. Chance of precipitation is 50%.
Friday Night
Showers. Low around 32. North northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Saturday
Showers. High near 37. North northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Saturday Night
A chance of freezing rain. Mostly cloudy, with a low around 20. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Sunday
A slight chance of freezing rain before noon. Partly sunny, with a high near 34. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 19.
Monday
Sunny, with a high near 41.
Monday Night
Mostly clear, with a low around 21.
Tuesday
Sunny, with a high near 49.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Leon Valley TX
 29.52°N 98.59°W (Elev. 922 ft)
4:33 am CST Jan 21, 2026
5am CST Jan 21, 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