Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Mostly Cloudy
78°F
26°C
| Humidity | 93% |
| Wind Speed | S 9 mph |
| Barometer | 29.98 in (1014.4 mb) |
| Dewpoint | 76°F (24°C) |
| Visibility | 10.00 mi |
| Heat Index | 81°F (27°C) |
| Last update | 22 May 12:56 am CDT |
Extended Forecast for
4 Miles SSW San Marcos TX
Overnight
Low: 73 °F
Mostly Cloudy
Thursday
High: 99 °F
Hot
Thursday Night
Low: 73 °F
Slight Chance
T-stormsFriday
High: 97 °F
Decreasing
CloudsFriday Night
Low: 73 °F
Partly Cloudy
Saturday
High: 98 °F
Mostly Sunny
Saturday Night
Low: 75 °F
Partly Cloudy
Sunday
High: 97 °F
Partly Sunny
then Slight
Chance
T-stormsSunday Night
Low: 73 °F
Chance
T-storms
Detailed Forecast
Overnight
Mostly cloudy, with a low around 73. South wind around 5 mph.
Thursday
Mostly cloudy through mid morning, then gradual clearing and hot, with a high near 99. Heat index values as high as 104. Light south southeast wind increasing to 5 to 10 mph in the morning.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Increasing clouds, with a low around 73. Southeast wind 5 to 10 mph becoming east northeast after midnight.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 97. Heat index values as high as 103. South southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 73. South southeast wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 98. South wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday Night
Partly cloudy, with a low around 75. South southeast wind 10 to 20 mph, with gusts as high as 25 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 97. South wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. South southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Memorial Day
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 92.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Tuesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles SSW San Marcos TX
29.83°N 97.94°W (Elev. 610 ft)
29.83°N 97.94°W (Elev. 610 ft)
1:35 am CDT May 22, 2025
1am CDT May 22, 2025-6pm CDT May 28, 2025
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