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 Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

59°F

15°C

Humidity 87%
Wind Speed S 6 mph
Barometer 30.14 in (1020.4 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 21 Jan 3:56 am CST
Extended Forecast for

2 Miles SW Hays TX

  • Overnight

    Overnight: A 20 percent chance of showers.  Cloudy, with a low around 50. South wind around 5 mph.

    Low: 50 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers between 9am and 3pm.  Cloudy, then gradually becoming mostly sunny, with a high near 69. South wind 5 to 10 mph becoming west in the afternoon.  Chance of precipitation is 20%.

    High: 69 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50. North wind around 5 mph.

    Low: 50 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 70. North wind around 5 mph becoming southeast in the afternoon.

    High: 70 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 54. South southeast wind around 5 mph.

    Low: 54 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, mainly after noon.  Cloudy, with a high near 66. South southeast wind 5 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 60%.

    High: 66 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Rain showers before 3am, then rain or freezing rain.  Low around 27. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.  Chance of precipitation is 90%.

    Low: 27 °F

    Showers
    Likely then
    Rain/Freezing
    Rain

  • Saturday

    Saturday: Rain showers and freezing rain, possibly mixed with sleet before noon, then freezing rain likely, possibly mixed with sleet.  High near 34. North wind around 15 mph, with gusts as high as 30 mph.  Chance of precipitation is 90%.

    High: 34 °F

    Wintry Mix

  • Saturday Night

    Saturday Night: Freezing rain likely before midnight, then a chance of freezing rain and sleet.  Mostly cloudy, with a low around 15. North wind around 15 mph, with gusts as high as 30 mph.  Chance of precipitation is 60%.

    Low: 15 °F

    Freezing Rain
    Likely then
    Chance Wintry
    Mix

Detailed Forecast

Overnight
A 20 percent chance of showers. Cloudy, with a low around 50. South wind around 5 mph.
Wednesday
A slight chance of showers between 9am and 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 69. South wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 50. North wind around 5 mph.
Thursday
Mostly cloudy, with a high near 70. North wind around 5 mph becoming southeast in the afternoon.
Thursday Night
Mostly cloudy, with a low around 54. South southeast wind around 5 mph.
Friday
Showers likely, mainly after noon. Cloudy, with a high near 66. South southeast wind 5 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Friday Night
Rain showers before 3am, then rain or freezing rain. Low around 27. North northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Saturday
Rain showers and freezing rain, possibly mixed with sleet before noon, then freezing rain likely, possibly mixed with sleet. High near 34. North wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Saturday Night
Freezing rain likely before midnight, then a chance of freezing rain and sleet. Mostly cloudy, with a low around 15. North wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Sunday
A slight chance of freezing rain and sleet before noon. Mostly cloudy, with a high near 31. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 14.
Monday
Sunny, with a high near 39.
Monday Night
Mostly clear, with a low around 18.
Tuesday
Sunny, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Hays TX
 30.09°N 97.89°W (Elev. 801 ft)
4:33 am CST Jan 21, 2026
4am 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