San Marcos, Texas Weather Conditions

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Current Conditions

  • 88°
  • Scattered Clouds
  • Wind: SE 15 mph
  • Humidity: 58%
  • Visibility: 10.0 miles
  • Dew Point: 72°
  • Pressure: 29.95 in. -
  • Heat Index: 94

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Next 12 Hours

6  pm
9  pm
12  am
3  am
6  am
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Mostly Cloudy
Mostly Cloudy
Overcast
Overcast
88°
81°
77°
76°
76°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Sunday
  • Partly Cloudy
  • High: 91 °
  • Low: 75 °
  • Partly Cloudy
  • Monday
  • Partly Cloudy
  • High: 92 °
  • Low: 75 °
  • Partly Cloudy
  • Tuesday
  • Mostly Cloudy
  • High: 91 °
  • Low: 75 °
  • Mostly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 93 °
  • Low: 73 °
  • Partly Cloudy
  • Thursday
  • Partly Cloudy
  • High: 93 °
  • Low: 73 °
  • Partly Cloudy

Forecast for San Marcos, Texas

Updated: 2:33 PM CDT on July 4, 2015

  • Tonight

    Partly cloudy until early morning then becoming mostly cloudy. Lows in the mid 70s. South winds 10 to 15 mph.

  • Sunday

    Mostly cloudy in the morning then becoming mostly sunny. Highs in the upper 80s. South winds 10 to 15 mph.

  • Sunday Night

    Partly cloudy before midnight then becoming mostly cloudy. Lows in the mid 70s. South winds 10 to 15 mph.

  • Monday

    Partly cloudy in the morning then becoming mostly sunny. Highs around 90. South winds 10 to 20 mph.

  • Monday Night

    Partly cloudy. Lows in the mid 70s. South winds 10 to 20 mph.

  • Tuesday through Saturday

    Partly cloudy. Highs in the lower 90s. Lows in the mid 70s.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Heritage, San Marcos, TX

Updated: 5:21 PM CDT

Temperature: 91.8 °F Dew Point: 75 °F Humidity: 58% Wind: North at - Pressure: 29.78 in Hourly Precipitation: 0.00 in Heat Index: 103 °F Graphs

Location: Spring Lake Hills, San Marcos, TX

Updated: 5:25 PM CDT

Temperature: 89.6 °F Dew Point: 26 °F Humidity: 10% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Willow Creek, San Marcos, TX

Updated: 5:25 PM CDT

Temperature: 88.2 °F Dew Point: 76 °F Humidity: 68% Wind: South at 1.3 mph Pressure: 29.82 in Hourly Precipitation: 0.00 in Heat Index: 100 °F Graphs

Location: Siesta Verde, San Marcos, TX

Updated: 5:25 PM CDT

Temperature: 86.8 °F Dew Point: 76 °F Humidity: 71% Wind: SW at 3.0 mph Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 98 °F Graphs

Location: Horace howard, San Marcos, TX

Updated: 5:21 PM CDT

Temperature: 90.0 °F Dew Point: 75 °F Humidity: 62% Wind: ESE at 4.7 mph Pressure: 29.81 in Hourly Precipitation: - Heat Index: 101 °F Graphs

Location: Hay Barn Drive, Kyle, TX

Updated: 5:26 PM CDT

Temperature: 95.0 °F Dew Point: 79 °F Humidity: 59% Wind: North at - Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 112 °F Graphs

Location: Hunter Ridge, San Marcos, TX

Updated: 5:25 PM CDT

Temperature: 86.9 °F Dew Point: 78 °F Humidity: 74% Wind: SE at 2.0 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: 99 °F Graphs

Location: Quail Run, Martindale, TX

Updated: 5:25 PM CDT

Temperature: 89.2 °F Dew Point: 70 °F Humidity: 53% Wind: ESE at 6.9 mph Pressure: 29.83 in Hourly Precipitation: 0.00 in Heat Index: 94 °F Graphs

Location: Oak Meadows, San Marcos, TX

Updated: 5:25 PM CDT

Temperature: 86.7 °F Dew Point: 74 °F Humidity: 65% Wind: South at 1.3 mph Pressure: 29.92 in Hourly Precipitation: 0.00 in Heat Index: 95 °F Graphs

Location: Cypress Road, Kyle, TX

Updated: 5:25 PM CDT

Temperature: 87.8 °F Dew Point: 77 °F Humidity: 70% Wind: SSW at 2.7 mph Pressure: 29.79 in Hourly Precipitation: 0.00 in Heat Index: 100 °F Graphs

Location: Goodger Farm, Martindale, TX

Updated: 5:25 PM CDT

Temperature: 89.4 °F Dew Point: 80 °F Humidity: 73% Wind: SSE at 2.0 mph Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: 106 °F Graphs

Location: Silverado, Kyle, TX

Updated: 5:23 PM CDT

Temperature: 91.6 °F Dew Point: 61 °F Humidity: 36% Wind: West at 4.2 mph Pressure: 29.77 in Hourly Precipitation: - Heat Index: 92 °F Graphs

Location: Downtown, Staples, TX

Updated: 5:25 PM CDT

Temperature: 89.2 °F Dew Point: 75 °F Humidity: 62% Wind: SE at 8.1 mph Pressure: 29.94 in Hourly Precipitation: 0.00 in Heat Index: 99 °F Graphs

Location: River Mountain Ranch, Wimberley, TX

Updated: 5:25 PM CDT

Temperature: 87.3 °F Dew Point: 51 °F Humidity: 29% Wind: SSE at 7.6 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Elk Ridge Rockpile, Canyon Lake, TX

Updated: 5:11 PM CDT

Temperature: 91.6 °F Dew Point: 75 °F Humidity: 59% Wind: SSW at 2.2 mph Pressure: 29.67 in Hourly Precipitation: - Heat Index: 103 °F Graphs

Location: Havenwood, New Braunfels, TX

Updated: 5:25 PM CDT

Temperature: 91.0 °F Dew Point: 75 °F Humidity: 60% Wind: SSW at 1.0 mph Pressure: 29.70 in Hourly Precipitation: 0.00 in Heat Index: 102 °F Graphs

Location: paradise hills, Wimberley, TX

Updated: 5:24 PM CDT

Temperature: 87.1 °F Dew Point: 73 °F Humidity: 63% Wind: ESE at 2.5 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 95 °F Graphs

Location: rolling oaks, New Braunfels, TX

Updated: 5:25 PM CDT

Temperature: 91.2 °F Dew Point: 71 °F Humidity: 52% Wind: South at 2.7 mph Pressure: 29.59 in Hourly Precipitation: 0.00 in Heat Index: 98 °F Graphs

Location: ParkPlace4RV's, Canyon Lake, TX

Updated: 5:25 PM CDT

Temperature: 88.5 °F Dew Point: 73 °F Humidity: 61% Wind: SE at 8.0 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 97 °F Graphs

Location: Hilltop Ridge - The Summit, New Braunfels, TX

Updated: 5:12 PM CDT

Temperature: 92.3 °F Dew Point: 73 °F Humidity: 54% Wind: East at 5.0 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 102 °F Graphs

Location: Eden Ranch Drive, New Braunfels, TX

Updated: 5:21 PM CDT

Temperature: 92.1 °F Dew Point: 73 °F Humidity: 53% Wind: North at - Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 100 °F Graphs

Location: Corner of River Road and Lange Road, Wimberley, TX

Updated: 5:25 PM CDT

Temperature: 91.2 °F Dew Point: 74 °F Humidity: 58% Wind: SE at 2.0 mph Pressure: 30.02 in Hourly Precipitation: 0.00 in Heat Index: 101 °F Graphs

Location: Creekside Drive, Buda, TX

Updated: 5:20 PM CDT

Temperature: 87.6 °F Dew Point: 76 °F Humidity: 68% Wind: North at - Pressure: 29.77 in Hourly Precipitation: 0.00 in Heat Index: 98 °F Graphs

Location: River Chase, New Braunfels, TX

Updated: 5:23 PM CDT

Temperature: 89.6 °F Dew Point: 79 °F Humidity: 72% Wind: SSW at 2.2 mph Pressure: 29.72 in Hourly Precipitation: - Heat Index: 106 °F Graphs

Location: APRSWXNET, Canyon Lake, TX

Updated: 5:05 PM CDT

Temperature: 92 °F Dew Point: 69 °F Humidity: 48% Wind: South at 1 mph Pressure: 29.88 in Hourly Precipitation: 0.00 in Heat Index: 97 °F Graphs

Location: Ranch at Wimberley, Wimberley, TX

Updated: 5:22 PM CDT

Temperature: 90.9 °F Dew Point: 74 °F Humidity: 57% Wind: South at 9.4 mph Pressure: 29.88 in Hourly Precipitation: - Heat Index: 100 °F Graphs

Location: Skyline Ranch, Wimberley, TX

Updated: 5:25 PM CDT

Temperature: 91.4 °F Dew Point: 75 °F Humidity: 59% Wind: ENE at 3.1 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Heat Index: 102 °F Graphs

Location: Preiss Heights, New Braunfels, TX

Updated: 5:26 PM CDT

Temperature: 89.1 °F Dew Point: 74 °F Humidity: 62% Wind: Calm Pressure: 29.84 in Hourly Precipitation: 0.00 in Heat Index: 99 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Austin/San Antonio Texas 
254 PM CDT Sat Jul 4 2015 


Short term (tonight through Sunday night)... 
seeing some isolated shower and storm development east of i35 as 
expected today. All convective and moisture parameters favor this 
area until 00z. Hi res models advertise another loss of convection 
as the evening progresses with a quiet overnight period in store. 


For Sunday...similar conditions will exist compared to today in 
the low levels. 20-30 knots 850 mb flow due to a subtropical high 
over the eastern Gulf will continue to be in place with the best 
deep layer moisture in the eastern County Warning Area. In the upper levels the 
trough will continue east and result in variable upper level flow 
as the ridge builds. The ridging effects will result in a slightly 
more stable atmosphere tomorrow afternoon and forecast soundings 
on the GFS/NAM both show a healthy cap at 750 mb at 18z. Erosion 
of the cap is advertised in the NAM...which has been overdoing 
convective potential...and the GFS holds it strong. Thinking 
isolated showers and storms are still possible...but think this 
will be pretty significantly confined to the coastal plains where 
sea breeze convection may be able to lift parcels...but still not 
too high on this potential either. Only slight chance probability of precipitation in the 
forecast for this area. 


&& 


Long term (monday through saturday)... 
the ridge pattern over the SW Continental U.S. Will undergo some shortwave 
deformations and influences Monday night and again Wednesday 
night. The amplification of the shortwaves is beefier in the 
GFS...which would lead to the potential for any potential mesoscale convective system 
generation or linear system to progress farther south...should one 
occur Wednesday night. At this time...no synoptic model suggests 
this will occur...but its something to keep an eye on...especially 
if mesoscale features not captured by the synoptic models is also 
at play. As confidence is very low...no adjustment was made to the 
pop chances...but thought this may at least be Worth mentioning. 


Otherwise a much drier period is in store for the week. The long 
range GFS advertises central Texas being directly under the center 
of the summertime ridge and should continue to dry out the 
atmosphere. So it would appear that very isolated afternoon 
convection will be the only precipitation opportunities for the extended. 


&& 


Preliminary point temps/pops... 
Austin Camp Mabry 76 92 76 92 75 / - 10 - - - 
Austin Bergstrom international Airport 74 91 76 92 76 / 10 10 - - - 
New Braunfels Muni Airport 74 90 75 91 75 / - 10 - - - 
Burnet Muni Airport 74 90 75 91 74 / - 10 - - - 
del Rio International Airport 76 93 76 95 77 / - - 0 - - 
Georgetown Muni Airport 75 90 76 91 75 / - 10 - - - 
Hondo Muni Airport 74 90 75 92 75 / - 10 0 - - 
San Marcos Muni Airport 75 90 76 92 75 / 10 10 - - - 
La Grange - Fayette regional 75 91 77 91 77 / 10 20 - - - 
San Antonio International Airport 76 91 76 92 75 / - 10 0 - - 
Stinson Muni Airport 76 91 76 92 76 / - 10 0 - - 


&& 


Ewx watches/warnings/advisories... 
none. 
&& 


$$ 


Mesoscale/aviation...Oaks 
synoptic/grids...tb3 
public service/data collection...LH 



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