San Antonio, Texas Weather Conditions

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Current Conditions

  • 57°
  • Overcast
  • Wind: NNE 9 mph
  • Humidity: 100%
  • Visibility: 4.0 miles
  • Dew Point: 57°
  • Pressure: 30.03 in. -

Nowcast

  • Now as of 5:04 am CST on December 18, 2014

    Through 7 am...patchy light drizzle will continue across south central Texas with little or no measurable rainfall expected. Areas of fog will continue with visibilities generally 1/2 to 2 miles. Some locations will see visibilities of 1/4 mile or less. Motorists should exercise caution and slow down in areas of fog as visibilities may drop rapidly. Remember to use the low beam headlights in areas of fog.

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Next 12 Hours

6  am
9  am
12  pm
3  pm
6  pm
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Chance of Rain
Thunderstorm
T-storms
55°
61°
64°
70°
66°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Thursday
  • Thunderstorm
  • High: 70 °
  • Low: 61 °
  • Thunderstorm
  • Friday
  • Thunderstorm
  • High: 63 °
  • Low: 45 °
  • T-Storms
  • Saturday
  • Partly Cloudy
  • High: 63 °
  • Low: 45 °
  • Partly Cloudy
  • Sunday
  • Partly Cloudy
  • High: 64 °
  • Low: 48 °
  • Partly Cloudy
  • Monday
  • Partly Cloudy
  • High: 72 °
  • Low: 52 °
  • Partly Cloudy

Forecast for San Antonio, Texas

Updated: 3:00 AM CST on December 18, 2014

  • Thursday

    Overcast with a chance of rain. Fog early. High of 70F. Winds less than 5 mph. Chance of rain 20%.

  • Thursday Night

    Overcast with thunderstorms and rain showers. Low of 61F. Winds from the ENE at 5 to 10 mph. Chance of rain 80% with rainfall amounts near 1.0 in. possible.

  • Friday

    Overcast with thunderstorms and rain showers, then a chance of rain in the afternoon. High of 63F. Winds from the NNE at 10 to 15 mph. Chance of rain 60% with rainfall amounts near 0.6 in. possible.

  • Friday Night

    Partly cloudy in the evening, then clear. Low of 45F. Winds from the North at 5 to 15 mph.

  • Saturday

    Partly cloudy. High of 63F. Winds from the NE at 5 to 10 mph.

  • Saturday Night

    Partly cloudy. Low of 45F. Winds from the East at 5 to 10 mph.

  • Sunday

    Partly cloudy. High of 64F. Winds less than 5 mph.

  • Sunday Night

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

  • Monday

    Partly cloudy. High of 72F. Winds from the WSW at 5 to 15 mph.

  • Monday Night

    Clear. Low of 52F. Winds from the SW at 5 to 15 mph.

  • Tuesday

    Clear. High of 70F. Winds from the North at 10 to 15 mph.

  • Tuesday Night

    Clear. Low of 43F. Winds from the ENE at 5 to 10 mph.

  • Wednesday

    Clear. High of 68F. Winds from the SSE at 5 to 15 mph.

  • Wednesday Night

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

  • Thursday

    Partly cloudy with a chance of rain. Fog early. High of 70F. Winds from the SSE at 10 to 15 mph. Chance of rain 40%.

  • Thursday Night

    Mostly cloudy. Fog overnight. Low of 50F. Winds from the South at 5 to 10 mph.

  • Friday

    Partly cloudy. Fog early. High of 70F. Winds less than 5 mph.

  • Friday Night

    Partly cloudy. Low of 46F. Winds less than 5 mph.

  • Saturday

    Partly cloudy. High of 64F. Winds less than 5 mph.

  • Saturday Night

    Clear. Low of 45F. Winds less than 5 mph.

  • Sunday

    Clear. High of 63F. Winds less than 5 mph.

  • Sunday Night

    Clear. Low of 45F. Winds less than 5 mph.

Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Marshall Meadows, San Antonio, TX

Updated: 5:26 AM CST

Temperature: 54.7 °F Dew Point: 54 °F Humidity: 97% Wind: North at 2.2 mph Pressure: 30.11 in Hourly Precipitation: - Graphs

Location: Wellesley Manor, San Antonio, TX

Updated: 5:25 AM CST

Temperature: 56.3 °F Dew Point: 52 °F Humidity: 87% Wind: Calm Pressure: 29.97 in Hourly Precipitation: 0.00 in Graphs

Location: French Creek Village, San Antonio, TX

Updated: 5:27 AM CST

Temperature: 57.4 °F Dew Point: 57 °F Humidity: 99% Wind: East at 6.0 mph Pressure: 29.12 in Hourly Precipitation: 0.00 in Graphs

Location: Alamo Farmsteads, San Antonio, TX

Updated: 5:27 AM CST

Temperature: 55.2 °F Dew Point: 50 °F Humidity: 84% Wind: Calm Pressure: 29.27 in Hourly Precipitation: 0.00 in Graphs

Location: West Wood Village, San Antonio, TX

Updated: 5:27 AM CST

Temperature: 57.3 °F Dew Point: 56 °F Humidity: 95% Wind: NE at 1.2 mph Pressure: 29.26 in Hourly Precipitation: 0.00 in Graphs

Location: Braun Station, San Antonio, TX

Updated: 5:27 AM CST

Temperature: 57.7 °F Dew Point: 58 °F Humidity: 99% Wind: Calm Pressure: 29.62 in Hourly Precipitation: 0.00 in Graphs

Location: Far West Side, San Antonio, TX

Updated: 5:26 AM CST

Temperature: 53.2 °F Dew Point: 51 °F Humidity: 91% Wind: North at - Pressure: 30.17 in Hourly Precipitation: 0.00 in Graphs

Location: Northwest Side, San Antonio, TX

Updated: 5:26 AM CST

Temperature: 52.5 °F Dew Point: 47 °F Humidity: 80% Wind: North at - Pressure: 30.11 in Hourly Precipitation: - Graphs

Location: New Territories, San Antonio, TX

Updated: 5:27 AM CST

Temperature: 56.2 °F Dew Point: 56 °F Humidity: 98% Wind: Calm Pressure: 29.93 in Hourly Precipitation: 0.00 in Graphs

Location: Summit, San Antonio, TX

Updated: 5:15 AM CST

Temperature: 55.0 °F Dew Point: 55 °F Humidity: 98% Wind: North at 1.0 mph Pressure: 30.19 in Hourly Precipitation: 0.00 in Graphs

Location: Far West Side, San Antonio, TX

Updated: 4:10 AM CST

Temperature: 57.2 °F Dew Point: 46 °F Humidity: 67% Wind: North at - Pressure: 30.08 in Hourly Precipitation: 0.00 in Graphs

Location: Tanglewood, San Antonio, TX

Updated: 5:12 AM CST

Temperature: 55.4 °F Dew Point: 55 °F Humidity: 98% Wind: Calm Pressure: 29.79 in Hourly Precipitation: - Graphs

Location: Oak Ridge Pointe, San Antonio, TX

Updated: 5:12 AM CST

Temperature: 55.8 °F Dew Point: 56 °F Humidity: 99% Wind: Calm Pressure: 29.98 in Hourly Precipitation: - Graphs

Location: Braunridge, Helotes, TX

Updated: 5:27 AM CST

Temperature: 56.2 °F Dew Point: 55 °F Humidity: 97% Wind: Calm Pressure: 30.12 in Hourly Precipitation: 0.00 in Graphs

Location: North San Antonio Hills, San Antonio, TX

Updated: 5:20 AM CST

Temperature: 56.7 °F Dew Point: 56 °F Humidity: 99% Wind: NNE at 3.8 mph Pressure: 30.16 in Hourly Precipitation: 0.00 in Graphs

Location: Castle Hills, San Antonio, TX

Updated: 5:23 AM CST

Temperature: 55.2 °F Dew Point: 55 °F Humidity: 99% Wind: East at 4.3 mph Pressure: 29.99 in Hourly Precipitation: - Graphs

Location: North Central, Castle Hills, TX

Updated: 5:26 AM CST

Temperature: 56.1 °F Dew Point: 52 °F Humidity: 86% Wind: North at - Pressure: 30.13 in Hourly Precipitation: 0.00 in Graphs

Location: College Park, San Antonio, TX

Updated: 5:27 AM CST

Temperature: 56.4 °F Dew Point: 54 °F Humidity: 91% Wind: Calm Pressure: 30.06 in Hourly Precipitation: 0.00 in Graphs

Location: Cedar Springs 2, Helotes, TX

Updated: 5:22 AM CST

Temperature: 55.8 °F Dew Point: 56 °F Humidity: 99% Wind: NNW at 3.2 mph Pressure: 29.98 in Hourly Precipitation: - Graphs

Location: Cedar Springs, Helotes, TX

Updated: 5:27 AM CST

Temperature: 57.2 °F Dew Point: 53 °F Humidity: 86% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Graphs

Location: Helotes Park Terrace, Helotes, TX

Updated: 5:27 AM CST

Temperature: 55.8 °F Dew Point: 53 °F Humidity: 91% Wind: NW at 1.1 mph Pressure: 29.96 in Hourly Precipitation: 0.00 in Graphs

Location: Shavano Park, Shavano Park, TX

Updated: 3:21 AM CST

Temperature: 55.2 °F Dew Point: 54 °F Humidity: 96% Wind: Calm Pressure: 29.00 in Hourly Precipitation: 0.00 in Graphs

Location: Stillwater Ranch, San Antonio, TX

Updated: 5:25 AM CST

Temperature: 57.0 °F Dew Point: 56 °F Humidity: 98% Wind: Calm Pressure: 30.00 in Hourly Precipitation: - Graphs

Location: King William, San Antonio, TX

Updated: 5:24 AM CST

Temperature: 56.8 °F Dew Point: 56 °F Humidity: 96% Wind: Calm Pressure: 29.35 in Hourly Precipitation: 0.00 in Graphs

Location: North Central, San Antonio, TX

Updated: 5:25 AM CST

Temperature: 57.2 °F Dew Point: 54 °F Humidity: 90% Wind: North at - Pressure: 30.12 in Hourly Precipitation: - Graphs

Location: Tower View Road, Helotes, TX

Updated: 5:27 AM CST

Temperature: 55.0 °F Dew Point: 54 °F Humidity: 97% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Graphs

Location: Former Lone Star Brewery, San Antonio, TX

Updated: 5:20 AM CST

Temperature: 57.4 °F Dew Point: 56 °F Humidity: 96% Wind: NE at 3.0 mph Pressure: 29.99 in Hourly Precipitation: 0.00 in Graphs

Location: Alamo Heights, San Antonio, TX

Updated: 5:14 AM CST

Temperature: 55.9 °F Dew Point: 56 °F Humidity: 99% Wind: SSW at 1.1 mph Pressure: 29.85 in Hourly Precipitation: - Graphs

Location: LIME Factory, San Antonio, TX

Updated: 5:26 AM CST

Temperature: 56.6 °F Dew Point: 56 °F Humidity: 96% Wind: NE at 3.0 mph Pressure: 29.35 in Hourly Precipitation: 0.00 in Graphs

Location: Alamo Heights, San Antonio, TX

Updated: 5:24 AM CST

Temperature: 55.7 °F Dew Point: 54 °F Humidity: 93% Wind: NW at 1.0 mph Pressure: 30.06 in Hourly Precipitation: 0.00 in Graphs

Location: Uptown, San Antonio, TX

Updated: 5:26 AM CST

Temperature: 58.3 °F Dew Point: 55 °F Humidity: 90% Wind: North at - Pressure: 30.14 in Hourly Precipitation: 0.00 in Graphs

Location: Rogers Ranch, San Antonio, TX

Updated: 5:27 AM CST

Temperature: 56.7 °F Dew Point: 56 °F Humidity: 99% Wind: NW at 1.6 mph Pressure: 29.81 in Hourly Precipitation: 0.00 in Graphs

Location: N5SDF Louis Agusta Dr, San Antonio, TX

Updated: 5:27 AM CST

Temperature: 57.3 °F Dew Point: 53 °F Humidity: 86% Wind: Calm Pressure: 29.91 in Hourly Precipitation: 0.00 in 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 
439 am CST Thursday Dec 18 2014 


..periods of heavy rain expected overnight... 


Short term (today through friday)... 


Main focus will center on next 24-36 hours where periods of heavy 
rain will be likely for areas along and southeast of a Pleasanton to 
Georgetown line beginning late tonight through middle morning Friday. 
Overall accumulations near 2 inches with local areas reaching near 3 
inches should be greatest across the inland coastal prairies and 
slowly tapering lower into the 1-2 inch range towards the I-35 
corridor. Some localized flash flooding or urban flooding could 
occur if enough storm training occurs. 


For this morning, light scattered showers and drizzle are slowly 
shifting east across the region with light drizzle remaining 
possible through the early morning hours for mainly the I-35 
corridor and areas east. Areas of fog are also ongoing early this 
morning with some locals seeing dense fog. Fog will improve through 
the early to middle morning. Expect a lull in activity through middle 
morning to early afternoon with most shower activity residing 
towards the Texas coast. This activity however will begin to migrate 
northward and Blossom over the region by tonight as upper level 
divergence increases with the approach of potent shortwave trough. 


As far as weather evolution today and overnight, showers will 
initially move north into southern zones from south Texas late this 
afternoon. As the shortwave trough pivots towards the region 
tonight, and inverted surface trough and eventual closed low will 
aid moist southeast flow into the Rio Grande Valley. This additional 
moisture underneath an elevated cooler core pocket will increase 
both surface and elevated instability for western locations. 
Vertical totals look to increase into the 26-29c range with 
impressive -2 to -5 negative showalters coupled with 60-70 knots 0-6 km 
shear will support a marginal hail risk initially around midnight. 
This risk will decrease into early morning as baroclinic zone 
focuses farther east. The main focus of impacts from this system 
will be the blossoming of shower and thunderstorm activity by 
midnight across south-central and southeast zones. Of highest 
concern will be the inland coastal prairie counties where hi-res 
guidance and Storm Prediction Center sseo output suggest greatest rain totals in the 2-3 
inch realm could be located. Overall GFS and GFS-parallel trends 
have also focused in this vicinity with lesser overall amounts west 
of Highway 281 and amounts tapering lower towards the I-35 corridor. If 
surface low develops farther south or east, even lower amounts for 
the I-35 corridor could occur as moisture flux becomes decreased by 
being blocked closer to the coast. Have placed greatest probability of precipitation in 
during the midnight to 6am timeframe with a ramp up and ramp down 
for the pre and Post 3 hour time steps. Shower and thunderstorm 
activity will decrease and move east through middle morning Friday with 
most, if not all, activity east by early afternoon. /Allen/ 


&& 


Long term (friday night through wednesday)... 


Slow clearing will be ongoing by late Friday and more sun is 
expected Saturday with temperatures near normal. By Sunday, yet 
another trough looks to pivot over the region but overall column of 
moisture likely continues to be too dry for shower support as precipitable waters  
will be 0.5-0.7". Increased cloudiness is expected however and that 
will linger through Monday before a dry cold front looks to move 
across the region early Tuesday. This will bring reinforcing drier 
air and keep temperatures near normal with temperatures averaging in 
the upper 30s to low 40s for lows and low to middle 60s for highs with 
more sun expected through midweek. No impact weather is expected 
during this time frame. /Allen/ 


&& 


Preliminary point temps/pops... 
Austin Camp Mabry 68 54 59 45 58 / 20 90 80 10 10 
Austin Bergstrom international Airport 68 54 59 45 58 / 20 90 80 10 10 
New Braunfels Muni Airport 69 57 62 44 60 / 20 90 70 10 10 
Burnet Muni Airport 67 51 57 40 56 / 10 80 70 10 10 
del Rio International Airport 67 54 65 43 61 / - 40 20 10 0 
Georgetown Muni Airport 67 51 56 44 56 / 10 90 80 10 10 
Hondo Muni Airport 70 56 64 41 60 / 20 80 60 10 10 
San Marcos Muni Airport 68 55 60 45 58 / 20 90 80 10 10 
La Grange - Fayette regional 69 57 62 48 59 / 30 100 90 10 10 
San Antonio International Airport 69 58 63 46 60 / 20 90 70 10 10 
Stinson Muni Airport 69 58 64 45 61 / 20 90 70 10 10 


&& 


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


$$ 


Mesoscale/aviation...04 
synoptic/grids...15 



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