Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Overcast
61°F
16°C
| Humidity | 93% |
| Wind Speed | N 3 mph |
| Barometer | 30.04 in (1016.8 mb) |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Last update | 8 Mar 9:56 pm CDT |
Extended Forecast for
2 Miles WSW San Marcos TX
Tonight
Low: 60 °F
Mostly Cloudy
then Patchy
FogMonday

High: 82 °F
Slight Chance
T-storms and
Patchy FogMonday Night
Low: 67 °F
Slight Chance
T-storms then
CloudyTuesday
High: 82 °F
Slight Chance
T-storms then
Chance
ShowersTuesday Night
Low: 62 °F
Chance
Showers then
ShowersWednesday

High: 82 °F
Chance
ShowersWednesday Night

Low: 48 °F
Clear
Thursday

High: 71 °F
Sunny
Thursday Night

Low: 47 °F
Clear
Detailed Forecast
Tonight
Patchy fog after 1am. Otherwise, cloudy, with a low around 60. Calm wind.
Monday
A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 82. Light south southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Monday Night
A slight chance of thunderstorms before 7pm. Mostly cloudy, with a low around 67. South wind around 10 mph. Chance of precipitation is 10%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Cloudy, with a high near 82. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Tuesday Night
A chance of showers, then showers and possibly a thunderstorm after 1am. Low around 62. South southeast wind 10 to 15 mph becoming west southwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Wednesday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly sunny, with a high near 82. Southwest wind 5 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 30%.
Wednesday Night
Clear, with a low around 48. North wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday
Sunny, with a high near 71. North wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Clear, with a low around 47. East southeast wind around 5 mph becoming south southwest after midnight.
Friday
Sunny, with a high near 82.
Friday Night
Clear, with a low around 55.
Saturday
Sunny, with a high near 87.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Mostly sunny, with a high near 88.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
2 Miles WSW San Marcos TX
29.86°N 97.97°W (Elev. 646 ft)
29.86°N 97.97°W (Elev. 646 ft)
6:44 pm CDT Mar 8, 2026
10pm CDT Mar 8, 2026-6pm CDT Mar 15, 2026


