Heavy Snow in the Central/Southern Rockies; Below Average Temperatures in the Central and Eastern US

Moderate to heavy snowfall is expected in the central/southern Rockies and adjacent High Plains today. Lake-enhanced snowfall is expected downwind of the Great Lakes today. Showers and thunderstorms will be possible this evening into tonight across the western Gulf Coast states. Temperatures across much of the central and eastern CONUS will remain below average and chilly to end the week. Read More >

Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

Overcast

46°F

8°C

Humidity 77%
Wind Speed S 3 mph
Barometer 30.05 in (1017.6 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 3 Dec 7:56 am CST
Extended Forecast for

San Marcos Municipal Airport TX

  • Today

    Today: Mostly cloudy, with a high near 65. South wind 5 to 10 mph.

    High: 65 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 3am.  Cloudy, with a low around 48. Light and variable wind becoming north 10 to 15 mph after midnight. Winds could gust as high as 20 mph.

    Low: 48 °F

    Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers.  Cloudy, with a high near 53. North wind 15 to 20 mph, with gusts as high as 30 mph.  New precipitation amounts between a tenth and quarter of an inch possible.

    High: 53 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers, mainly after midnight.  Cloudy, with a low around 41. North wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 41 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers before noon.  Cloudy, with a high near 54. North wind 5 to 10 mph becoming south southeast in the afternoon.

    High: 54 °F

    Chance
    Showers then
    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 45. South southeast wind around 5 mph becoming calm.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 70. Southwest wind 5 to 10 mph.

    High: 70 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 46. South southwest wind 5 to 10 mph becoming northwest after midnight.

    Low: 46 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 73. Northwest wind 5 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.

    High: 73 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 65. South wind 5 to 10 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 3am. Cloudy, with a low around 48. Light and variable wind becoming north 10 to 15 mph after midnight. Winds could gust as high as 20 mph.
Thursday
A 50 percent chance of showers. Cloudy, with a high near 53. North wind 15 to 20 mph, with gusts as high as 30 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 40 percent chance of showers, mainly after midnight. Cloudy, with a low around 41. North wind 10 to 15 mph, with gusts as high as 25 mph.
Friday
A 30 percent chance of showers before noon. Cloudy, with a high near 54. North wind 5 to 10 mph becoming south southeast in the afternoon.
Friday Night
Mostly cloudy, with a low around 45. South southeast wind around 5 mph becoming calm.
Saturday
Mostly sunny, with a high near 70. Southwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 46. South southwest wind 5 to 10 mph becoming northwest after midnight.
Sunday
Sunny, with a high near 73. Northwest wind 5 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 41.
Monday
Sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
San Marcos Municipal Airport TX
 29.9°N 97.86°W (Elev. 600 ft)
6:46 am CST Dec 3, 2025
8am CST Dec 3, 2025-6pm CST Dec 9, 2025
 
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Additional Resources

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