San Marcos, Texas Weather Conditions

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Current Conditions

  • 82°
  • Clear
  • Wind: SE 8 mph
  • Humidity: 48%
  • Visibility: 10.0 miles
  • Dew Point: 61°
  • Pressure: 29.98 in. 0
  • Heat Index: 83

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Next 12 Hours

10  pm
1  am
4  am
7  am
10  am
Clear
Clear
Clear
Clear
Partly Cloudy
Partly Cloudy
Chance of a Thunderstorm
Chance of T-storms
Chance of a Thunderstorm
Chance of T-storms
84°
79°
75°
73°
82°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Chance of a Thunderstorm
  • High: 97 °
  • Low: 75 °
  • Chance of a Thunderstorm
  • Friday
  • Chance of a Thunderstorm
  • High: 95 °
  • Low: 75 °
  • Chance of T-Storms
  • Saturday
  • Chance of a Thunderstorm
  • High: 93 °
  • Low: 77 °
  • Chance of T-Storms
  • Sunday
  • Chance of a Thunderstorm
  • High: 93 °
  • Low: 75 °
  • Chance of T-Storms
  • Monday
  • Partly Cloudy
  • High: 97 °
  • Low: 75 °
  • Partly Cloudy

Forecast for San Marcos, Texas

Updated: 10:00 PM CDT on August 27, 2014

  • Wednesday

    Partly cloudy with a chance of a thunderstorm and a chance of rain, then thunderstorms in the afternoon. High of 100F. Winds from the NE at 5 to 15 mph. Chance of rain 20%.

  • Wednesday Night

    Clear with thunderstorms in the evening, then partly cloudy. Low of 73F. Winds from the ESE at 5 to 15 mph.

  • Thursday

    Overcast with a chance of a thunderstorm and a chance of rain in the morning, then partly cloudy with a chance of a thunderstorm and a chance of rain. High of 97F. Winds from the ESE at 5 to 15 mph. Chance of rain 20%.

  • Thursday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 75F. Winds from the SSE at 5 to 15 mph. Chance of rain 20%.

  • Friday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 95F with a heat index of 100F. Winds from the SE at 5 to 10 mph. Chance of rain 40%.

  • Friday Night

    Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 75F. Winds from the SSE at 5 to 15 mph. Chance of rain 20%.

  • Saturday

    Partly cloudy with a chance of a thunderstorm and a chance of rain. High of 93F with a heat index of 100F. Winds from the SE at 5 to 10 mph. Chance of rain 30%.

  • Saturday Night

    Mostly cloudy with a chance of a thunderstorm and rain. Low of 77F. Winds from the SSE at 5 to 10 mph. Chance of rain 20%.

  • Sunday

    Overcast with a chance of a thunderstorm and rain. High of 93F with a heat index of 99F. Winds from the SSE at 10 to 15 mph. Chance of rain 40%.

  • Sunday Night

    Overcast in the evening, then partly cloudy. Fog overnight. Low of 75F. Winds from the SSE at 5 to 15 mph.

  • Monday

    Overcast in the morning, then partly cloudy. High of 97F. Winds from the South at 10 to 15 mph.

  • Monday Night

    Clear. Low of 75F. Winds from the SSE at 5 to 15 mph.

  • Tuesday

    Partly cloudy with a chance of a thunderstorm. High of 97F. Winds from the SE at 5 to 10 mph. Chance of rain 20%.

  • Tuesday Night

    Clear. Low of 75F. Winds from the SSE at 5 to 15 mph.

  • Wednesday

    Partly cloudy. High of 97F. Winds from the ESE at 5 to 10 mph.

  • Wednesday Night

    Partly cloudy. Low of 73F. Winds from the SE at 5 to 15 mph.

  • Thursday

    Partly cloudy. High of 95F. Winds less than 5 mph.

  • Thursday Night

    Clear. Low of 73F. Winds less than 5 mph.

  • Friday

    Clear. High of 95F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy. Low of 73F. Winds less than 5 mph.

  • Saturday

    Mostly cloudy. High of 97F. Winds less than 5 mph.

  • Saturday Night

    Mostly cloudy. Low of 72F. Winds less than 5 mph.

  • Sunday

    Clear. High of 97F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 72F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Spring Lake Hills, San Marcos, TX

Updated: 10:05 PM CDT

Temperature: 82.9 °F Dew Point: 69 °F Humidity: 62% Wind: Calm Pressure: 30.16 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Siesta Verde, San Marcos, TX

Updated: 10:06 PM CDT

Temperature: 82.4 °F Dew Point: 64 °F Humidity: 54% Wind: South at 2.0 mph Pressure: 29.09 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Lime Kiln, San Marcos, TX

Updated: 10:06 PM CDT

Temperature: 82.3 °F Dew Point: 64 °F Humidity: 53% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: Hunter Ridge, San Marcos, TX

Updated: 10:05 PM CDT

Temperature: 83.7 °F Dew Point: 68 °F Humidity: 60% Wind: ESE at 1.0 mph Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Oak Meadows, San Marcos, TX

Updated: 10:05 PM CDT

Temperature: 81.5 °F Dew Point: 61 °F Humidity: 50% Wind: SSE at 1.1 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 82 °F Graphs

Location: Williams Ranch, San Marcos, TX

Updated: 10:05 PM CDT

Temperature: 83.3 °F Dew Point: 58 °F Humidity: 42% Wind: Calm Pressure: 29.57 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: Goodger Farm, Martindale, TX

Updated: 10:05 PM CDT

Temperature: 85.3 °F Dew Point: 71 °F Humidity: 62% Wind: Calm Pressure: 29.86 in Hourly Precipitation: 0.00 in Heat Index: 90 °F Graphs

Location: Silverado, Kyle, TX

Updated: 10:04 PM CDT

Temperature: 82.8 °F Dew Point: 21 °F Humidity: 10% Wind: Calm Pressure: 29.82 in Hourly Precipitation: - Heat Index: 80 °F Graphs

Location: Downtown, Staples, TX

Updated: 10:05 PM CDT

Temperature: 84.9 °F Dew Point: 69 °F Humidity: 58% Wind: ENE at 6.4 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: River Mountain Ranch, Wimberley, TX

Updated: 10:06 PM CDT

Temperature: 76.8 °F Dew Point: 59 °F Humidity: 54% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Havenwood, New Braunfels, TX

Updated: 10:05 PM CDT

Temperature: 82.3 °F Dew Point: 64 °F Humidity: 53% Wind: Calm Pressure: 29.73 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: paradise hills, Wimberley, TX

Updated: 10:06 PM CDT

Temperature: 83.5 °F Dew Point: 29 °F Humidity: 14% Wind: North at 4.0 mph Pressure: 28.64 in Hourly Precipitation: 0.00 in Heat Index: 81 °F Graphs

Location: rolling oaks, New Braunfels, TX

Updated: 10:06 PM CDT

Temperature: 82.4 °F Dew Point: 62 °F Humidity: 50% Wind: Calm Pressure: 29.64 in Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

Location: MesoWest GOODWN TX US UPR, New Braunfels, TX

Updated: 8:35 PM CDT

Temperature: 86 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 83 °F Graphs

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

Updated: 9:58 PM CDT

Temperature: 83.0 °F Dew Point: 62 °F Humidity: 49% Wind: ESE at 1.0 mph Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 84 °F Graphs

Location: River Road/Lange Road, Wimberley, TX

Updated: 9:56 PM CDT

Temperature: 79.2 °F Dew Point: 78 °F Humidity: 95% Wind: Calm Pressure: 29.87 in Hourly Precipitation: - Heat Index: 84 °F Graphs

Location: MesoWest LKHART TX US UPR, Lockhart, TX

Updated: 8:35 PM CDT

Temperature: 90 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: River Chase, New Braunfels, TX

Updated: 9:56 PM CDT

Temperature: 83.1 °F Dew Point: 59 °F Humidity: 44% Wind: Calm Pressure: 29.75 in Hourly Precipitation: - Heat Index: 83 °F Graphs

Location: Guadalupe River at Riverside Path, Canyon Lake, TX

Updated: 10:06 PM CDT

Temperature: 77.4 °F Dew Point: 63 °F Humidity: 61% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: RAWS AUSTIN WATER QD TX US, Driftwood, TX

Updated: 7:48 PM CDT

Temperature: 89 °F Dew Point: 55 °F Humidity: 32% Wind: ESE at 1 mph Pressure: - Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Preiss Heights, New Braunfels, TX

Updated: 10:05 PM CDT

Temperature: 83.9 °F Dew Point: 69 °F Humidity: 61% Wind: Calm Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 88 °F Graphs

Location: Flying Horses Ranch, Buda, TX

Updated: 10:06 PM CDT

Temperature: 83.7 °F Dew Point: 62 °F Humidity: 49% Wind: East at 2.9 mph Pressure: 29.97 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Canyon Falls RV Park, Canyon Lake, TX

Updated: 10:06 PM CDT

Temperature: 77.7 °F Dew Point: 56 °F Humidity: 48% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Garlic Creek West, Buda, TX

Updated: 9:52 PM CDT

Temperature: 82.9 °F Dew Point: 63 °F Humidity: 52% Wind: Calm Pressure: 29.88 in Hourly Precipitation: - Heat Index: 84 °F Graphs

Location: LCYC, Canyon Lake, TX

Updated: 10:05 PM CDT

Temperature: 84.8 °F Dew Point: 61 °F Humidity: 45% Wind: East at 7.0 mph Pressure: 29.89 in Hourly Precipitation: 0.00 in Heat Index: 85 °F Graphs

Location: Turnersville, Buda, TX

Updated: 10:05 PM CDT

Temperature: 83.9 °F Dew Point: 66 °F Humidity: 54% Wind: SE at 9.0 mph Pressure: 29.87 in Hourly Precipitation: 0.00 in Heat Index: 86 °F Graphs

Location: Blanco River Estates, Wimberley, TX

Updated: 10:06 PM CDT

Temperature: 77.4 °F Dew Point: 60 °F Humidity: 56% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Turkey Cove, Canyon Lake, TX

Updated: 10:02 PM CDT

Temperature: 85.8 °F Dew Point: 64 °F Humidity: 48% Wind: SE at 3.0 mph Pressure: 29.90 in Hourly Precipitation: 0.00 in Heat Index: 87 °F Graphs

Location: Lake Dunlap, New Braunfels, TX

Updated: 10:05 PM CDT

Temperature: 87.6 °F Dew Point: 69 °F Humidity: 55% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in Heat Index: 92 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion...updated 
National Weather Service Austin/San Antonio Texas 
630 PM CDT Wednesday Aug 27 2014 


Aviation...visible satellite imagery shows extensive cumulus 
field with bases between 7k and 9k feet over south-central Texas... 
while closer to the coast...more significant cloudiness exists 
with decks closer to 10k feet. Think this higher-level cloudiness 
will migrate farther inland per recent satellite trends and affect 
the aerodromes overnight. However...have retained the previous 
mention of tempo few015 ceilings inherited from the outgoing shift. 
Tomorrow...VFR is likely to prevail with light onshore winds and 
rising decks. Only issue of concern is the area of disturbed 
weather along the Lower Texas coast...with the potential for any 
movement towards the west inducing more cloudiness within south- 
central Texas through the next 24 hours. Some uncertainty about 
this exists...and this will be something to monitor by incoming 
shifts through the time period indicated...with adjustments to the 
current suite of tafs possible. 
&& 


Previous discussion... /issued 342 PM CDT Wednesday Aug 27 2014/ 


Short term (tonight through Thursday night)... 
the low over the western Gulf has a disorganized circulation...but 
strong enough to bring drier air across the area through 
subsidence and advection this afternoon...as well as provide a 
northeast to southwest motion for storms. A few showers have developed 
over the Edwards Plateau. More vigorous storms continue over the 
coastal plains...just to the east of our area. Overall coverage of 
probability of precipitation will be less than 20 percent across the western 2/3 of the 
area...and only 20 percent in the eastern 1/3. There is still 
potential for gusty outflow winds to 50 miles per hour with the strongest 
storms. A few spots over the southeast may see 1/4 inch of 
rain...but most locations will remain dry and storms will end 
entirely by 9 PM. 


Long term (friday through wednesday)... 
the forecast from the past few days is still on track with the low 
over the Gulf slowly moving inland Thursday and Friday...with the 
main action on Friday as a middle-latitude trough syncs up with the 
Gulf low. We have kept probability of precipitation in the forecast Saturday and 
Sunday...but then dry Monday Onward as the subtropical ridge re- 
asserts itself across the southern half of the country. The GFS 
and CMC indicate another low developing in the Bay of Campeche... 
then moving north-northwest across Texas the last half of next 
week. The European model (ecmwf) does not have this feature at all...but does 
indicate a slug of moist Gulf air moving north in the same time 
frame. We decided to keep probability of precipitation out of the forecast at this time 
due to the lack of consensus on the features and timing...but we 
will be monitoring this closely as time GOES on. 
&& 


Preliminary point temps/pops... 
Austin Camp Mabry 75 97 76 95 76 / 10 20 20 40 20 
Austin Bergstrom international Airport 72 97 74 95 73 / 10 20 20 40 20 
New Braunfels Muni Airport 73 97 74 96 74 / 20 30 30 40 20 
Burnet Muni Airport 73 95 74 93 74 / 10 20 20 30 20 
del Rio International Airport 77 99 77 96 77 / 10 10 20 20 20 
Georgetown Muni Airport 74 95 76 93 76 / 10 20 20 40 20 
Hondo Muni Airport 72 97 73 94 73 / 10 20 20 30 20 
San Marcos Muni Airport 74 97 74 95 74 / 10 20 20 40 20 
La Grange - Fayette regional 75 96 75 94 76 / 20 30 30 40 20 
San Antonio International Airport 77 97 77 95 77 / 10 20 20 30 20 
Stinson Muni Airport 76 98 76 95 76 / 10 20 20 30 20 
&& 


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


$$ 


Mesoscale/aviation...tomaselli 



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