San Antonio, Texas Weather Conditions

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Current Conditions

  • 74°
  • Rain
  • Wind: East 5 mph
  • Humidity: 91%
  • Visibility: 7.0 miles
  • Dew Point: 71°
  • Pressure: 29.97 in. -

Nowcast

  • Now as of 9:00 PM CDT on September 25, 2016

    Flash Flood Watch in effect until 7 am CDT Monday... Through 11 PM...areas of light rain with isolated thunderstorms will spread across the region. Rainfall totals will be mostly a few hundredths of an inch while a few spots could see up to a quarter of an inch. Any thunderstorms will produce infrequent lightning.

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Next 12 Hours

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1  am
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7  am
10  am
Thunderstorm
T-storms
Thunderstorm
T-storms
Chance of a Thunderstorm
Chance of T-storms
Chance of Rain
Chance of Rain
Overcast
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74°
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Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Monday
  • Chance of Rain
  • High: 77 °
  • Low: 67 °
  • Chance of Rain
  • Tuesday
  • Mostly Cloudy
  • High: 83 °
  • Low: 66 °
  • Mostly Cloudy
  • Wednesday
  • Partly Cloudy
  • High: 87 °
  • Low: 67 °
  • Partly Cloudy
  • Thursday
  • Clear
  • High: 88 °
  • Low: 65 °
  • Clear
  • Friday
  • Clear
  • High: 86 °
  • Low: 62 °
  • Clear

Forecast for San Antonio, Texas

Updated: 9:07 PM CDT on September 25, 2016

Flash Flood Watch in effect until 7 am CDT Monday...
  • Rest of Tonight

    Showers and thunderstorms. Locally heavy rainfall possible. Near steady temperature in the lower 70s. Northeast winds 5 to 10 mph. Chance of rain 80 percent.

  • Monday

    Cloudy with showers and thunderstorms likely. Highs 74 to 79. Northeast winds 10 to 15 mph. Chance of rain 60 percent.

  • Monday Night

    Cloudy with a 40 percent chance of showers and thunderstorms. Lows in the mid 60s. North winds 10 to 15 mph.

  • Tuesday

    Cloudy with a 20 percent chance of showers and thunderstorms. Highs around 80. Northeast winds 10 to 15 mph.

  • Tuesday Night

    Mostly cloudy before midnight then becoming partly cloudy. Lows in the lower 60s. North winds 5 to 10 mph.

  • Wednesday and Wednesday Night

    Partly cloudy. Highs in the mid 80s. Lows in the mid 60s.

  • Thursday through Sunday

    Mostly clear. Highs in the mid 80s. Lows in the mid 60s.

Severe Weather Alert Descriptions

 Flash Flood Watch  Statement as of 9:00 PM CDT on September 25, 2016


... Flash Flood Watch in effect until 7 am CDT Monday...

The National Weather Service in Austin/San Antonio has expanded
the

* Flash Flood Watch to include a portion of south central
Texas... including the following areas... Atascosa... Bexar...
Karnes... Kendall and Wilson.

* Until 7 am CDT Monday

* widespread rain is expected to continue through Monday morning
leading to 2 to 4 inches of rain with isolated higher amounts
possible. This rain on top of wet soils from earlier rainfall
will lead to a flash flood threat.

* Small streams and creeks could experience flooding and result
in flooded low water crossings. Never drive across a Road
covered in water. Turn around... don't drown.

Precautionary/preparedness actions...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should flash flood warnings be issued.






 Record Report  Statement as of 4:53 PM CDT on September 25, 2016


... Record daily maximum rainfall set at del Rio...

A record rainfall of 1.67 inches was set at del Rio today.
This breaks the old record of 1.45 inches set in 1980.



 Local Storm Report 



09/25/2016 0330 PM

2 miles ENE of Shavano Park, Bexar County.

Heavy rain m1.32 inch, reported by trained spotter.


            Rain fell in an hour and a half





09/25/2016 0330 PM

2 miles ENE of Shavano Park, Bexar County.

Heavy rain m1.32 inch, reported by trained spotter.


            Rain fell in an hour and a half





09/25/2016 0330 PM

2 miles ENE of Shavano Park, Bexar County.

Heavy rain m1.32 inch, reported by trained spotter.


            Rain fell in an hour and a half




Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Brookside, San Antonio, TX

Updated: 10:26 PM CDT

Temperature: 72.1 °F Dew Point: 72 °F Humidity: 99% Wind: Calm Pressure: 29.92 in Hourly Precipitation: - Heat Index: - Graphs

Location: Newell Commercial Properties LP, San Antonio, TX

Updated: 10:30 PM CDT

Temperature: 72.7 °F Dew Point: 66 °F Humidity: 81% Wind: ENE at 1.0 mph Pressure: 29.94 in Hourly Precipitation: 0.07 in Heat Index: 73 °F Graphs

Location: LIME Factory, San Antonio, TX

Updated: 10:33 PM CDT

Temperature: 72.1 °F Dew Point: 71 °F Humidity: 96% Wind: ENE at 4.0 mph Pressure: 29.98 in Hourly Precipitation: 0.05 in Heat Index: - Graphs

Location: Arsenal, San Antonio, TX

Updated: 10:28 PM CDT

Temperature: 73.8 °F Dew Point: 68 °F Humidity: 83% Wind: North at - Pressure: 29.94 in Hourly Precipitation: - Heat Index: 74 °F Graphs

Location: King William, San Antonio, TX

Updated: 10:28 PM CDT

Temperature: 71.3 °F Dew Point: 70 °F Humidity: 95% Wind: Calm Pressure: 30.03 in Hourly Precipitation: 0.12 in Heat Index: - Graphs

Location: Dignowity Hill, San Antonio, TX

Updated: 10:24 PM CDT

Temperature: 72.3 °F Dew Point: 69 °F Humidity: 92% Wind: North at - Pressure: 29.88 in Hourly Precipitation: - Heat Index: - Graphs

Location: Onyx Way, San Antonio, TX

Updated: 10:28 PM CDT

Temperature: 73.6 °F Dew Point: 72 °F Humidity: 93% Wind: North at - Pressure: 29.96 in Hourly Precipitation: 0.11 in Heat Index: 71 °F Graphs

Location: Rosedale Park, San Antonio, TX

Updated: 10:30 PM CDT

Temperature: 71.8 °F Dew Point: 70 °F Humidity: 95% Wind: NE at 1.2 mph Pressure: 30.05 in Hourly Precipitation: 0.08 in Heat Index: - Graphs

Location: San Antonio KOA, San Antonio, TX

Updated: 10:20 PM CDT

Temperature: 72.1 °F Dew Point: 72 °F Humidity: 99% Wind: NE at 3.7 mph Pressure: 29.96 in Hourly Precipitation: - Heat Index: - Graphs

Location: Jefferson, San Antonio, TX

Updated: 10:27 PM CDT

Temperature: 70.5 °F Dew Point: 70 °F Humidity: 100% Wind: North at - Pressure: 29.99 in Hourly Precipitation: 0.04 in Heat Index: - Graphs

Location: APRSWXNET, Balcones Heights, TX

Updated: 9:55 PM CDT

Temperature: 72 °F Dew Point: 70 °F Humidity: 94% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.00 in Heat Index: - Graphs

Location: Mahncke Park, San Antonio, TX

Updated: 10:32 PM CDT

Temperature: 71.9 °F Dew Point: 71 °F Humidity: 96% Wind: ENE at 2.0 mph Pressure: 29.99 in Hourly Precipitation: 0.05 in Heat Index: - Graphs

Location: Mahncke Park, San Antonio, TX

Updated: 10:33 PM CDT

Temperature: 71.6 °F Dew Point: 70 °F Humidity: 94% Wind: NE at 3.2 mph Pressure: 29.98 in Hourly Precipitation: - Heat Index: - Graphs

Location: Olmos Park, San Antonio, TX

Updated: 10:19 PM CDT

Temperature: 71.6 °F Dew Point: 71 °F Humidity: 97% Wind: Calm Pressure: 29.20 in Hourly Precipitation: 0.11 in Heat Index: - Graphs

Location: Monticello, San Antonio, TX

Updated: 10:33 PM CDT

Temperature: 72.1 °F Dew Point: 69 °F Humidity: 91% Wind: Calm Pressure: 29.97 in Hourly Precipitation: - Heat Index: - Graphs

Location: Condominium, San Antonio, TX

Updated: 10:33 PM CDT

Temperature: 72.3 °F Dew Point: 71 °F Humidity: 96% Wind: Calm Pressure: 29.99 in Hourly Precipitation: 0.07 in Heat Index: - Graphs

Location: Woodlawn Lake, San Antonio, TX

Updated: 10:33 PM CDT

Temperature: 72.1 °F Dew Point: 71 °F Humidity: 95% Wind: ENE at 1.0 mph Pressure: 30.00 in Hourly Precipitation: 0.04 in Heat Index: - Graphs

Location: Alamo Heights, San Antonio, TX

Updated: 10:33 PM CDT

Temperature: 72.1 °F Dew Point: 66 °F Humidity: 82% Wind: Calm Pressure: 30.18 in Hourly Precipitation: 0.00 in Heat Index: 72 °F Graphs

Location: Alamo Heights, Alamo Heights, TX

Updated: 10:33 PM CDT

Temperature: 71.6 °F Dew Point: 70 °F Humidity: 96% Wind: East at 1.7 mph Pressure: 30.00 in Hourly Precipitation: - Heat Index: - Graphs

Location: kirby tx, Kirby, TX

Updated: 10:10 PM CDT

Temperature: 72.1 °F Dew Point: 72 °F Humidity: 98% Wind: Calm Pressure: 29.89 in Hourly Precipitation: 0.06 in Heat Index: - Graphs

Location: Uptown, San Antonio, TX

Updated: 10:29 PM CDT

Temperature: 72.7 °F Dew Point: 71 °F Humidity: 94% Wind: NW at 1.9 mph Pressure: 30.02 in Hourly Precipitation: 0.09 in Heat Index: - Graphs

Location: Meadowood Estates, San Antonio, TX

Updated: 10:28 PM CDT

Temperature: 72.0 °F Dew Point: 71 °F Humidity: 96% Wind: South at - Pressure: 29.95 in Hourly Precipitation: 0.08 in Heat Index: - Graphs

Location: Dellview, San Antonio, TX

Updated: 10:33 PM CDT

Temperature: 70.0 °F Dew Point: 69 °F Humidity: 97% Wind: Calm Pressure: 29.98 in Hourly Precipitation: 0.07 in Heat Index: - Graphs

Location: Alamo Heights, San Antonio, TX

Updated: 9:11 PM CDT

Temperature: 71.4 °F Dew Point: 71 °F Humidity: 98% Wind: WNW at 1.0 mph Pressure: 30.14 in Hourly Precipitation: 0.03 in Heat Index: - Graphs

Location: Pipers Meadow, San Antonio, TX

Updated: 10:32 PM CDT

Temperature: 73.7 °F Dew Point: 69 °F Humidity: 86% Wind: North at - Pressure: 29.01 in Hourly Precipitation: - Heat Index: 73 °F Graphs

Location: Flatus Fields, San Antonio, TX

Updated: 10:32 PM CDT

Temperature: 71.4 °F Dew Point: 70 °F Humidity: 95% Wind: Calm Pressure: 29.95 in Hourly Precipitation: 0.00 in Heat Index: - 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 
925 PM CDT sun Sep 25 2016 


Update... 
earlier rains produced an axis of radar estimated accumulations of 
1.5-2.5 inches across Kendall and Bexar counties, while amounts 
farther south into southern Atascosa County are as high as 4-6 
inches. Radar trends along with some recent hi-res model guidance 
suggests rainfall will continue to slowly expand across areas 
generally west of a Fredericksburg to San Antonio to Kenedy line. 
Based on the above, we have decided to expand the Flash Flood 
Watch to include Kendall, Bexar, Atascosa, Wilson and Karnes 
counties. 


&& 


Previous discussion... /issued 711 PM CDT sun Sep 25 2016/ 


Aviation.../00z tafs/ 
although showers are ongoing at the I-35 taf sites, none are 
currently experiencing thunderstorms as one line of thunderstorms 
is moving north of gtu while another more intense line develops 
along an outflow boundary or cold front southeast of pez. This line 
extends southwest towards lrd and apy and is slowly propagating to 
the southeast with some elements overrunning the boundary to the north. 
Showers with very isolated embedded thunderstorms are expected at 
the I-35 taf sites, but lightning potential remains too low to 
mention for the next six hours at any site. Ceilings for the I-35 
taf sites should gradually lower but generally remain MVFR for the 
next six hours, while drt should main VFR for the most part. 


The larger- scale cold front currently south of the I-20 corridor 
to our northwest will continue to push southeast. A midlevel 
shortwave moving north across the Rio Grande in Mexico will help 
provide some additional upper level support to allow additional 
showers with embedded thunderstorms to develop as this front 
approaches before convective potential decreases behind the front. 
Thus, have included tempo groups for thunderstorms between 6-9z 
for Sat/ssf and a prob30 group for drt between 9-12z. The 21z and 
22z hrrr model runs that are best handling the current scenario 
both keep thunderstorms out of aus, so have done the same. Patchy 
fog may end up being a greater concern at aus due to saturated 
soils and greater cold air advection, so currently have LIFR 
ceilings and visibilities there between 9-15z. 


Previous discussion... /issued 422 PM CDT sun Sep 25 2016/ 


Short term (tonight through Monday night)... 
the complex of showers and thunderstorms that continues to track 
east-NE along the Escarpment on the cool side an outflow boundary 
continues to produce up to 2 inches of rain per hour. The storms 
are becoming less organized as the cold pool has propagated away 
from better dynamic support aloft associated with a cutoff mid-to- 
upper level low retrograding in the Mexican state of Sonora. 
Although an mesoscale convective vortex that briefly developed over the western Hill 
Country has dissipated, there still is plenty of instability 
south of the surface boundary where temperatures have warmed to 
around 90 degrees. In addition, differential heating on both 
sides of this boundary may also be generating frontogenetical 
forcing that combined with southerly flow up the Escarpment, will 
continue to encourage additional scattered to widespread showers 
and thunderstorms through early evening. Thus, the Flash Flood 
Watch has been extended east by one row of counties in The Hill 
Country to account for heavier rainfall totals. Along and east of 
I-35, lower 1-3 inch totals are expected through this evening as 
storms should move fast enough to prevent higher totals. 


Heavier rainfall totals did occur over the western Hill Country 
and Edwards Plateau this morning where widespread 2-4 inch totals 
fell with isolated areas receiving over 6 inches. The hardest hit 
area appears to be in eastern Edwards County where up to 8 inches 
of rain has fallen causing the closure of all roads into and out 
of Rocksprings. Heavy rain has also prompted closures in parts of 
real and Kinney counties. These areas have stabilized in the wake 
of the complex that passed through as stratiform rain falls, so 
additional convective development is not expected there for the 
next few hours. However, stronger isentropic ascent will arrive 
this evening as the synoptic cold front along the Texas-OK border 
arrives and clearing prior to sunset may allow destabilization to 
occur. Any additional rainfall would accentuate ongoing flooding 
in these areas, so the Flash Flood Watch remains in effect there. 


The greatest potential for locally heavy rainfall through Monday 
morning is in the Rio Grande plains, particularly along and south 
of the weak surface boundary oriented near US Highway 57. Although 
the cutoff low is retrograding further to the west, it has kicked 
off a shortwave that is helping generate showers and thunderstorms 
in coahuila. All models continue to lag behind the actual 
progression of this system, but a few hi-res models continue to 
suggest that some training of storms could occur along the surface 
boundary with additional dynamic support aloft from the shortwave. 
Thus, we have included Maverick, Zavala, Dimmit, and frio counties, 
but the threat should remain low in over the next few hours if 
the surface boundary continue to propagate south and east. As the 
storms over Mexico expand and move north as they deepen by this 
evening, heavier convective rainfall may occur over the Rio Grande 
plains and move into Val Verde County and the Edwards Plateau as 
rain becomes more stratiform in nature. However, confidence is low 
in this solution given all models continue to be less progressive 
with the overall system and front than has occurred today, and the 
passage of the front would reduce the heavy rainfall threat. 


Scattered to widespread rain showers with isolated thunderstorms 
will be possible across the region tomorrow due to isentropic 
ascent allowing for moisture to overrun the front. However, rain 
totals should remain below a quarter inch for most areas except 
closer to the Rio Grande plains where heavier rainfall closer to 
an inch will be possible. Cloud cover and north-NE winds will cause 
much cooler high temperatures in the 70s and lower 80s on Monday 
with perhaps upper 60s in the Edwards Plateau. 


Long term (tuesday through sunday)... 
more tranquil and pleasant Fall weather is on the way once rain 
chances end from northeast to southwest Monday evening through 
Tuesday. An upper level ridge will materialize between the 
retrograding closed low in the Pacific and another closed low 
digging from the Midwest into the southeast U.S. By Wednesday. 
This digging low will allow reinforcing shots of cooler air to 
keep temperatures slightly below normal in the 80s with clear 
skies and dry conditions through next weekend. Low temperatures 
will be in the mid 50s to mid 60s for much of next week due to 
clear skies and continued weak northerly winds overnight. The best 
time of year weather-wise in south central Texas has arrived! 


&& 


Preliminary point temps/pops... 
Austin Camp Mabry 69 77 63 79 63 / 70 50 20 10 - 
Austin Bergstrom Intl Airport 69 78 63 80 61 / 70 50 20 10 - 
New Braunfels Muni Airport 69 78 63 81 62 / 70 60 30 20 10 
Burnet Muni Airport 65 72 60 77 60 / 70 50 20 10 - 
del Rio Intl Airport 68 72 60 72 62 / 80 70 60 30 10 
Georgetown Muni Airport 67 74 62 78 60 / 70 40 20 10 - 
Hondo Muni Airport 70 78 63 80 63 / 80 60 40 20 10 
San Marcos Muni Airport 69 78 63 80 62 / 70 50 30 20 10 
La Grange - Fayette regional 71 82 67 82 64 / 70 50 20 10 10 
San Antonio Intl Airport 70 78 64 80 63 / 80 60 40 20 10 
Stinson Muni Airport 72 80 66 82 65 / 80 60 40 20 10 


&& 


Ewx watches/warnings/advisories... 
Flash Flood Watch until 7 am CDT Monday for the following counties: 
Atascosa...Bandera...Bexar...Dimmit...Edwards...frio...Gillespie... 
Karnes...Kendall...Kerr...Kinney...Maverick...Medina...real... 
Uvalde...Val Verde...Wilson...Zavala. 


&& 


$$ 


Mesoscale/aviation...05 
synoptic/grids...24 
public service/data collection...30 






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