Current conditions at

San Marcos, San Marcos Municipal Airport (KHYI)

Lat: 29.89°NLon: 97.86°WElev: 597ft.

17°C

63°F

Humidity 58%
Wind Speed S 26 km/h
Barometer 1016.9 mb (30.04 in)
Dewpoint 9°C (48°F)
Visibility NA
Last update 17 Feb 4:56 pm CST
Extended Forecast for

San Marcos Municipal Airport TX

Extreme Cold Watch February 20, 12:00am until February 20, 12:00pm
Cold Weather Advisory February 19, 12:00am until February 19, 12:00pm
Click here for hazard details and duration
Extreme Cold Watch
Cold Weather Advisory
  • Tonight

    Tonight: Patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 11. South southeast wind 10 to 15 km/h.

    Low: 11 °C

    Mostly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: A slight chance of drizzle before noon, then a slight chance of showers after noon.  Patchy fog before noon.  Otherwise, cloudy, with a high near 20. Southeast wind 5 to 15 km/h becoming northeast in the afternoon.  Chance of precipitation is 20%.

    High: 20 °C

    Slight Chance
    Showers and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around -2. North wind 10 to 20 km/h increasing to 25 to 35 km/h. Winds could gust as high as 55 km/h.

    Low: -2 °C

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 5. North wind 30 to 35 km/h, with gusts as high as 55 km/h.

    High: 5 °C

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around -7. North wind 20 to 30 km/h, with gusts as high as 45 km/h.

    Low: -7 °C

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 4. North northeast wind 20 to 25 km/h, with gusts as high as 35 km/h.

    High: 4 °C

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -2. Northeast wind 10 to 15 km/h.

    Low: -2 °C

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers after noon.  Cloudy, with a high near 3. Northeast wind around 15 km/h.

    High: 3 °C

    Cloudy then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers.  Cloudy, with a low around 0. Northeast wind 10 to 15 km/h.

    Low: 0 °C

    Chance
    Showers

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 11. South southeast wind 10 to 15 km/h.
Tuesday
A slight chance of drizzle before noon, then a slight chance of showers after noon. Patchy fog before noon. Otherwise, cloudy, with a high near 20. Southeast wind 5 to 15 km/h becoming northeast in the afternoon. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around -2. North wind 10 to 20 km/h increasing to 25 to 35 km/h. Winds could gust as high as 55 km/h.
Wednesday
Mostly sunny, with a high near 5. North wind 30 to 35 km/h, with gusts as high as 55 km/h.
Wednesday Night
Mostly clear, with a low around -7. North wind 20 to 30 km/h, with gusts as high as 45 km/h.
Thursday
Mostly sunny, with a high near 4. North northeast wind 20 to 25 km/h, with gusts as high as 35 km/h.
Thursday Night
Mostly cloudy, with a low around -2. Northeast wind 10 to 15 km/h.
Friday
A 20 percent chance of showers after noon. Cloudy, with a high near 3. Northeast wind around 15 km/h.
Friday Night
A 40 percent chance of showers. Cloudy, with a low around 0. Northeast wind 10 to 15 km/h.
Saturday
A 30 percent chance of showers, mainly before noon. Mostly cloudy, with a high near 8.
Saturday Night
Partly cloudy, with a low around 1.
Sunday
Sunny, with a high near 20.
Sunday Night
Mostly clear, with a low around 7.
Monday
Sunny, with a high near 24.
Click Map For Forecast

ABOUT THIS FORECAST

 
Point Forecast:
San Marcos Municipal Airport TX
 29.88°N 97.86°W (Elev. 600 m)
2:50 pm CST Feb 17, 2025
4pm CST Feb 17, 2025-6pm CST Feb 24, 2025
 
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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