Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
80°F
27°C
| Humidity | 71% |
| Wind Speed | SE 5 mph |
| Barometer | 29.93 in (1012.6 mb) |
| Dewpoint | 70°F (21°C) |
| Visibility | 10.00 mi |
| Heat Index | 83°F (28°C) |
| Last update | 21 Sep 12:56 am CDT |
Extended Forecast for
2 Miles WSW San Marcos TX
Overnight
Low: 75 °F
Mostly Cloudy
Monday
High: 97 °F
Sunny then
Slight Chance
T-stormsMonday Night
Low: 74 °F
Slight Chance
T-storms then
Partly CloudyTuesday
High: 96 °F
Mostly Sunny
Tuesday Night
Low: 74 °F
Slight Chance
T-storms then
Slight Chance
ShowersWednesday
High: 97 °F
Mostly Sunny
Wednesday Night
Low: 75 °F
Partly Cloudy
Thursday
High: 96 °F
Mostly Sunny
Thursday Night
Low: 73 °F
Partly Cloudy
Detailed Forecast
Overnight
Mostly cloudy, with a low around 75. Calm wind.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 97. Heat index values as high as 103. Calm wind becoming east southeast around 5 mph in the afternoon.
Monday Night
A 20 percent chance of showers and thunderstorms before 10pm. Mostly clear, with a low around 74. East wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 96. Heat index values as high as 102. Calm wind becoming east around 5 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 74. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 97. North wind around 5 mph becoming east in the afternoon.
Wednesday Night
Partly cloudy, with a low around 75. East wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 96. Light and variable wind becoming east 5 to 10 mph in the morning.
Thursday Night
Partly cloudy, with a low around 73. East wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 95.
Friday Night
Partly cloudy, with a low around 71.
Saturday
Mostly sunny, with a high near 95.
Saturday Night
Partly cloudy, with a low around 72.
Sunday
Mostly sunny, with a high near 96.
Additional Forecasts and Information
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Forecast AreaABOUT 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)
1:24 am CDT Sep 21, 2026
1am CDT Sep 21, 2026-6pm CDT Sep 27, 2026
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