San Marcos, Texas Weather Conditions

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Current Conditions

  • 50°
  • Clear
  • Wind: NNE 4 mph
  • Humidity: 66%
  • Visibility: 10.0 miles
  • Dew Point: 39°
  • Pressure: 30.29 in. -

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Next 12 Hours

9  pm
12  am
3  am
6  am
9  am
Overcast
Overcast
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
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50°
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46°
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Thunderstorm
  • High: 61 °
  • Low: 54 °
  • T-Storms
  • Sunday
  • Thunderstorm
  • High: 68 °
  • Low: 34 °
  • T-Storms
  • Monday
  • Partly Cloudy
  • High: 52 °
  • Low: 36 °
  • Partly Cloudy
  • Tuesday
  • Partly Cloudy
  • High: 55 °
  • Low: 43 °
  • Partly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 68 °
  • Low: 43 °
  • Partly Cloudy

Forecast for San Marcos, Texas

Updated: 9:00 PM CST on January 30, 2015

  • Friday

    Mostly cloudy in the morning, then overcast. High of 57F. Breezy. Winds from the NNE at 10 to 20 mph.

  • Friday Night

    Overcast with a chance of rain after midnight. Low of 45F. Winds from the East at 5 to 15 mph. Chance of rain 20%.

  • Saturday

    Overcast with a chance of rain, then rain in the afternoon. High of 61F. Winds from the SSE at 10 to 15 mph. Chance of rain 60%.

  • Saturday Night

    Overcast with thunderstorms and rain. Fog overnight. Low of 54F. Winds from the SSE at 10 to 15 mph. Chance of rain 70% with rainfall amounts near 0.2 in. possible.

  • Sunday

    Overcast with thunderstorms and a chance of rain. High of 68F. Winds from the South at 5 to 10 mph shifting to the WNW in the afternoon. Chance of rain 40%.

  • Sunday Night

    Overcast in the evening, then partly cloudy. Low of 34F. Breezy. Winds from the North at 15 to 25 mph with gusts to 30 mph.

  • Monday

    Clear in the morning, then partly cloudy. High of 52F. Breezy. Winds from the NNE at 10 to 20 mph with gusts to 30 mph.

  • Monday Night

    Partly cloudy. Low of 36F. Winds from the ENE at 5 to 10 mph shifting to the SE after midnight.

  • Tuesday

    Mostly cloudy. High of 55F. Winds from the SSE at 5 to 10 mph.

  • Tuesday Night

    Mostly cloudy with a chance of rain after midnight. Low of 43F. Winds from the SSE at 5 to 10 mph. Chance of rain 20%.

  • Wednesday

    Clear. Fog early. High of 68F. Winds from the SSW at 5 to 15 mph.

  • Wednesday Night

    Clear. Fog overnight. Low of 43F. Winds from the SSE at 5 to 10 mph.

  • Thursday

    Clear. Fog early. High of 63F. Winds from the East at 5 to 15 mph shifting to the NNE in the afternoon.

  • Thursday Night

    Clear. Low of 37F. Winds from the NNE at 10 to 15 mph.

  • Friday

    Clear. High of 61F. Winds from the NE at 10 to 15 mph.

  • Friday Night

    Clear. Low of 37F. Winds from the ESE at 5 to 10 mph.

  • Saturday

    Clear. High of 68F. Winds from the South at 5 to 10 mph.

  • Saturday Night

    Clear. Low of 46F. Winds from the SSW at 5 to 10 mph.

  • Sunday

    Clear. High of 64F. Winds from the SW at 5 to 10 mph.

  • Sunday Night

    Clear. Fog overnight. Low of 48F. Winds less than 5 mph.

  • Monday

    Clear. Fog early. High of 64F. Winds less than 5 mph.

  • Monday Night

    Clear. Fog overnight. Low of 52F. Winds less than 5 mph.

  • Tuesday

    Clear. Fog early. High of 75F. Winds less than 5 mph.

  • Tuesday Night

    Clear. Fog overnight. Low of 52F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Spring Lake Hills, San Marcos, TX

Updated: 9:53 PM CST

Temperature: 50.7 °F Dew Point: 27 °F Humidity: 40% Wind: East at 3.4 mph Pressure: 30.45 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Willow Creek, San Marcos, TX

Updated: 9:53 PM CST

Temperature: 50.0 °F Dew Point: 42 °F Humidity: 74% Wind: Calm Pressure: 30.13 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET San Marcos TX US, San Marcos, TX

Updated: 9:12 PM CST

Temperature: 50 °F Dew Point: 42 °F Humidity: 74% Wind: Calm Pressure: 30.22 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Siesta Verde, San Marcos, TX

Updated: 9:53 PM CST

Temperature: 49.0 °F Dew Point: 42 °F Humidity: 77% Wind: Calm Pressure: 30.22 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Lime Kiln, San Marcos, TX

Updated: 9:53 PM CST

Temperature: 49.2 °F Dew Point: 42 °F Humidity: 75% Wind: Calm Pressure: 30.26 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Hay Barn Drive, Kyle, TX

Updated: 9:51 PM CST

Temperature: 52.7 °F Dew Point: 41 °F Humidity: 63% Wind: North at - Pressure: 30.15 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Hunter Ridge, San Marcos, TX

Updated: 9:53 PM CST

Temperature: 50.8 °F Dew Point: 43 °F Humidity: 74% Wind: Calm Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET San Marcos TX US, San Marcos, TX

Updated: 9:13 PM CST

Temperature: 49 °F Dew Point: 42 °F Humidity: 77% Wind: Calm Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Oak Meadows, San Marcos, TX

Updated: 9:53 PM CST

Temperature: 49.5 °F Dew Point: 42 °F Humidity: 74% Wind: Calm Pressure: 30.21 in Hourly Precipitation: 0.00 in Windchill: 50 °F Graphs

Location: Cypress Road, Kyle, TX

Updated: 9:53 PM CST

Temperature: 52.0 °F Dew Point: 40 °F Humidity: 63% Wind: NE at 1.3 mph Pressure: 30.09 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Four Seasons, Kyle, TX

Updated: 9:51 PM CST

Temperature: 51.3 °F Dew Point: 41 °F Humidity: 68% Wind: NNE at 2.0 mph Pressure: 30.33 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Goodger Farm, Martindale, TX

Updated: 9:53 PM CST

Temperature: 51.3 °F Dew Point: 44 °F Humidity: 76% Wind: ENE at 1.3 mph Pressure: 30.19 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Silverado, Kyle, TX

Updated: 9:48 PM CST

Temperature: 51.3 °F Dew Point: 25 °F Humidity: 35% Wind: ESE at 2.7 mph Pressure: 30.14 in Hourly Precipitation: - Windchill: - Graphs

Location: Downtown, Staples, TX

Updated: 9:53 PM CST

Temperature: 53.0 °F Dew Point: 44 °F Humidity: 69% Wind: Calm Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET Staples TX US, Staples, TX

Updated: 9:17 PM CST

Temperature: 53 °F Dew Point: 43 °F Humidity: 69% Wind: Calm Pressure: 30.29 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: River Mountain Ranch, Wimberley, TX

Updated: 9:53 PM CST

Temperature: 47.8 °F Dew Point: 45 °F Humidity: 89% Wind: Calm Pressure: 30.22 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

Location: Elk Ridge Rockpile, Canyon Lake, TX

Updated: 9:48 PM CST

Temperature: 46.9 °F Dew Point: 41 °F Humidity: 79% Wind: Calm Pressure: 30.04 in Hourly Precipitation: - Windchill: 47 °F Graphs

Location: Havenwood, New Braunfels, TX

Updated: 9:50 PM CST

Temperature: 51.7 °F Dew Point: 42 °F Humidity: 70% Wind: Calm Pressure: 30.08 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: paradise hills, Wimberley, TX

Updated: 9:53 PM CST

Temperature: 49.3 °F Dew Point: 14 °F Humidity: 24% Wind: Calm Pressure: 28.94 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: rolling oaks, New Braunfels, TX

Updated: 9:53 PM CST

Temperature: 51.6 °F Dew Point: 42 °F Humidity: 69% Wind: Calm Pressure: 29.92 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET Wimberley TX US, Wimberley, TX

Updated: 9:00 PM CST

Temperature: 50 °F Dew Point: 38 °F Humidity: 63% Wind: Calm Pressure: 30.25 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Wimberley, TX

Updated: 9:53 PM CST

Temperature: 48.0 °F Dew Point: 39 °F Humidity: 71% Wind: Calm Pressure: 30.23 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

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

Updated: 8:40 PM CST

Temperature: 51 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

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

Updated: 9:45 PM CST

Temperature: 49.6 °F Dew Point: 42 °F Humidity: 74% Wind: Calm Pressure: 30.27 in Hourly Precipitation: 0.00 in Windchill: 50 °F Graphs

Location: River Road/Lange Road, Wimberley, TX

Updated: 9:40 PM CST

Temperature: 48.0 °F Dew Point: 47 °F Humidity: 95% Wind: Calm Pressure: 30.19 in Hourly Precipitation: - Windchill: 48 °F Graphs

Location: MesoWest LKHART TX US UPR, Lockhart, TX

Updated: 8:40 PM CST

Temperature: 50 °F Dew Point: - Humidity: - Wind: Calm Pressure: - Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Sierra West Section 2, Driftwood, TX

Updated: 9:53 PM CST

Temperature: 49.2 °F Dew Point: 42 °F Humidity: 76% Wind: Calm Pressure: 30.32 in Hourly Precipitation: 0.00 in Windchill: 49 °F Graphs

Location: Creekside Drive, Buda, TX

Updated: 9:51 PM CST

Temperature: 52.3 °F Dew Point: 41 °F Humidity: 65% Wind: North at - Pressure: 30.11 in Hourly Precipitation: - Windchill: - Graphs

Location: Sierra West Sect 4, Driftwood, TX

Updated: 9:48 PM CST

Temperature: 48.2 °F Dew Point: 41 °F Humidity: 75% Wind: Calm Pressure: 30.21 in Hourly Precipitation: - Windchill: 48 °F Graphs

Location: APRSWXNET Sattler TX US, Canyon Lake, TX

Updated: 9:17 PM CST

Temperature: 48 °F Dew Point: 41 °F Humidity: 78% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Windchill: 48 °F Graphs

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

Updated: 9:53 PM CST

Temperature: 49.8 °F Dew Point: 44 °F Humidity: 81% Wind: Calm Pressure: 30.16 in Hourly Precipitation: 0.00 in Windchill: 50 °F Graphs

Location: Gruene Crossing, New Braunfels, TX

Updated: 9:53 PM CST

Temperature: 52.9 °F Dew Point: 8 °F Humidity: 16% Wind: Calm Pressure: 28.56 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: APRSWXNET New Braunfels TX US, New Braunfels, TX

Updated: 9:16 PM CST

Temperature: 52 °F Dew Point: 42 °F Humidity: 69% Wind: Calm Pressure: 30.24 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Preiss Heights, New Braunfels, TX

Updated: 9:53 PM CST

Temperature: 52.1 °F Dew Point: 42 °F Humidity: 69% Wind: Calm Pressure: 30.25 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Flying Horses Ranch, Buda, TX

Updated: 9:53 PM CST

Temperature: 50.9 °F Dew Point: 41 °F Humidity: 69% Wind: NE at 2.0 mph Pressure: 30.28 in Hourly Precipitation: 0.00 in Windchill: - Graphs

Location: Canyon Falls RV Park, Canyon Lake, TX

Updated: 9:53 PM CST

Temperature: 52.0 °F Dew Point: 42 °F Humidity: 68% Wind: Calm Pressure: 30.24 in Hourly Precipitation: 0.00 in Windchill: - 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 
908 PM CST Friday Jan 30 2015 


Update... 
the general forecast from earlier is on track. However...satellite 
and radar trends are aligning with the 00z NAM and recent 
mesoscale models for a later onset of precipitation as moistening 
will occur top down and early precipitation evaporate in drier air 
near the surface. Thus...we significantly lowered probability of precipitation for the 
before 06z period...and slightly lowered for the 06-12z period. We 
also re-trended temperatures...dew points...and winds through 12z...but 
only minor changes in those fields. 


&& 


Previous discussion... /issued 638 PM CST Friday Jan 30 2015/ 


Aviation... /00z taf update/ 
intermittent middle level clouds should gradually lower this evening 
with MVFR ceilings to develop between 03z and 05z around drt...and 
from 08z to 11z for the I-35 terminal sites. An area of light 
precipitation is around 90 nm west of drt and should begin to 
impact drt ceilings and visibilities between 04z and 06z. Widespread IFR 
conditions from mainly ceilings should develop by daybreak Saturday as 
precipitation chances and coverage increases. Some spotty LIFR 
ceilings and visibilities are possible...but will stick to prevailing higher 
categories until the precipitation trends can be established. Some 
slight improvements cold be seen right at the end of the drt taf 
period...but no improvements expected along I-35 through 06z 
Sunday. 


Previous discussion... /issued 305 PM CST Friday Jan 30 2015/ 


Short term (tonight through Saturday night)... 
the latest water vapor satellite loop shows a fairly deep upper 
trough just west of the Baja California peninsula...with plenty of middle and 
upper level moisture across Mexico and the Desert Southwest. This 
trough is forecast to deepen through Saturday...while slowly moving 
southward. As the trough approaches...an increase in southwesterly 
flow aloft is expected. The moisture and large scale lift associated 
with this trough will result in increasing rain chances tonight 
beginning out west along the Rio Grande. Moisture levels will 
initially be higher along the Rio Grande. However...there is some 
dry air noted on forecast soundings in the 600-800mb layer... 
especially east of I-35...and this may keep rainfall amounts fairly 
low for tonight. The column is expected to moisten throughout the 
day Saturday and this will result in increasing rain chances. It/S 
still difficult to pinpoint when the stronger lift will arrive. For 
now...it appears the best lift and moisture will coincide beginning 
Saturday afternoon and continuing through most of Saturday night. 
We have also added a mention of isolated thunderstorms Saturday 
night as models show some elevated instability spreading from west 
to east across the region. 


Long term (sunday through friday)... 
we/ll keep rain chances fairly high on Sunday as the upper level 
trough remains to our southwest. Average rainfall amounts around 
1/2" are forecast through Sunday night. Would not be too surprised 
to see isolated amounts closer to 3/4" to 1" across The Hill 
Country. We also expect a cold front to move through during the 
afternoon and evening hours to move through and this could aid in 
precipitation development. The pressure gradient behind the cold 
front looks rather Stout and gusty north winds are expected into 
early Monday morning. Drier air and increasing stability behind the 
front will lead to a dry and cool forecast for Monday. Meanwhile... 
the upper level low will move into central Mexico by late 
Monday...then into deep south Texas late Tuesday. Light showers will 
develop near the coastal plains Monday night...then spread northward 
into the I-35 corridor on Tuesday. The upper low finally departs on 
Wednesday followed by another cold front Wednesday night into 
Thursday morning. Dry and cool weather is anticipated for the end 
of the upcoming work week. 


&& 


Preliminary point temps/pops... 
Austin Camp Mabry 47 59 56 66 38 / 10 60 70 50 10 
Austin Bergstrom international Airport 45 61 55 65 37 / 10 60 70 50 10 
New Braunfels Muni Airport 46 62 57 68 39 / 10 60 70 50 10 
Burnet Muni Airport 44 54 53 59 34 / 20 80 70 50 10 
del Rio International Airport 50 59 53 68 41 / 40 80 30 30 10 
Georgetown Muni Airport 44 57 55 62 35 / 20 70 70 50 10 
Hondo Muni Airport 47 61 54 69 39 / 20 70 50 30 10 
San Marcos Muni Airport 46 61 56 67 38 / 10 60 70 40 10 
La Grange - Fayette regional 47 63 57 68 40 / 10 50 70 60 20 
San Antonio International Airport 48 61 56 69 40 / 20 70 60 40 10 
Stinson Muni Airport 48 63 56 69 41 / 20 70 60 40 20 


&& 


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


$$ 


Mesoscale/aviation...18 
synoptic/grids...26 
public service/data collection...00 



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