



Heavy Rain and Flooding in the Southern Plains
A cold front in the southern Plains will produce heavy rain and a flooding threat in the Arklatex area. These storms are expected to sink southward and weaken over South Texas on Thursday, and produce some moderate to locally heavy rainfall across southern Texas through the week. Read More >
Hazardous Weather Conditions
Current conditions at
San Marcos, San Marcos Municipal Airport (KHYI)
Lat: 29.89°NLon: 97.86°WElev: 597ft.
Fair
85°F
29°C
Humidity | 72% |
Wind Speed | SE 14 mph |
Barometer | 29.83 in (1009.3 mb) |
Dewpoint | 75°F (24°C) |
Visibility | 10.00 mi |
Heat Index | 93°F (34°C) |
Last update | 4 Oct 8:56 pm CDT |
Extended Forecast for
San Marcos TX
-
Tonight
Chance
T-storms then
Showers
LikelyLow: 72 °F
-
Thursday
T-storms
High: 83 °F
-
Thursday
NightSlight Chance
T-stormsLow: 69 °F
-
Friday
Partly Sunny
High: 83 °F
-
Friday
NightMostly Cloudy
Low: 62 °F
-
Saturday
Partly Sunny
High: 74 °F
-
Saturday
NightPartly Cloudy
Low: 53 °F
-
Sunday
Mostly Sunny
High: 78 °F
-
Sunday
NightMostly Clear
Low: 56 °F
Detailed Forecast
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 72. South wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms, mainly between 1pm and 4pm. High near 83. Northeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 69. North northeast wind around 10 mph.
Friday
Partly sunny, with a high near 83. North northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around 62. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Saturday
Partly sunny, with a high near 74. North northeast wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 53. Northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 78. North wind 5 to 10 mph becoming south in the afternoon.
Sunday Night
Mostly clear, with a low around 56. South wind 5 to 10 mph.
Columbus Day
Sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 84.
Additional Forecasts and Information
Click Map For Forecast
Point Forecast:
San Marcos TX
29.88°N 97.94°W (Elev. 577 ft)
29.88°N 97.94°W (Elev. 577 ft)
2:42 pm CDT Oct 4, 2023
9pm CDT Oct 4, 2023-6pm CDT Oct 11, 2023