Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

San Antonio, Stinson Municipal Airport (KSSF)

Lat: 29.34°NLon: 98.47°WElev: 574ft.

Mostly Cloudy

50°F

10°C

Humidity 57%
Wind Speed NE 9 mph
Barometer 30.32 in (1026.6 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 20 Jan 3:53 am CST
Extended Forecast for

4 Miles WSW San Antonio, Stinson Municipal Airport TX

  • Today

    Today: Mostly cloudy, with a high near 60. Northeast wind around 10 mph.

    High: 60 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 20 percent chance of showers after 9pm.  Patchy fog after 1am.  Otherwise, cloudy, with a low around 53. East southeast wind around 5 mph.

    Low: 53 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: A 20 percent chance of showers before noon.  Cloudy, then gradually becoming mostly sunny, with a high near 70. Calm wind becoming south around 5 mph.

    High: 70 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 55. Calm wind becoming northeast around 5 mph after midnight.

    Low: 55 °F

    Increasing
    Clouds

  • Thursday

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

    High: 74 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 58. Southeast wind around 5 mph.

    Low: 58 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers after noon.  Cloudy, with a high near 71. East southeast wind 5 to 10 mph.

    High: 71 °F

    Cloudy then
    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly after midnight.  Cloudy, with a low around 42. East northeast wind 10 to 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%.

    Low: 42 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely, mainly before noon.  Cloudy, with a high near 45. North northeast wind around 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 60%.

    High: 45 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly cloudy, with a high near 60. Northeast wind around 10 mph.
Tonight
A 20 percent chance of showers after 9pm. Patchy fog after 1am. Otherwise, cloudy, with a low around 53. East southeast wind around 5 mph.
Wednesday
A 20 percent chance of showers before noon. Cloudy, then gradually becoming mostly sunny, with a high near 70. Calm wind becoming south around 5 mph.
Wednesday Night
Increasing clouds, with a low around 55. Calm wind becoming northeast around 5 mph after midnight.
Thursday
Partly sunny, with a high near 74. Northeast wind around 5 mph becoming southeast in the afternoon.
Thursday Night
Mostly cloudy, with a low around 58. Southeast wind around 5 mph.
Friday
A 30 percent chance of showers after noon. Cloudy, with a high near 71. East southeast wind 5 to 10 mph.
Friday Night
Showers likely, mainly after midnight. Cloudy, with a low around 42. East northeast wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday
Showers likely, mainly before noon. Cloudy, with a high near 45. North northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 27.
Sunday
Partly sunny, with a high near 41.
Sunday Night
Partly cloudy, with a low around 26.
Monday
Mostly sunny, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW San Antonio, Stinson Municipal Airport TX
 29.3°N 98.53°W (Elev. 571 ft)
4:32 am CST Jan 20, 2026
4am CST Jan 20, 2026-6pm CST Jan 26, 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