San Antonio, Texas 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

713
FXUS64 KEWX 290003 AAA
AFDEWX

Area Forecast Discussion...UPDATED
National Weather Service Austin/San Antonio TX
703 PM CDT Sun Jun 28 2026

...New AVIATION...

.KEY MESSAGES...
Updated at 643 PM CDT Sun Jun 28 2026

- Dry, hot, and breezy with wind gusts of 25 to 30 mph rest of
  today and Monday

- Dry and hot conditions persist for the entire week

&&

.SHORT TERM...
(Tonight through Monday night)
Issued at 1229 PM CDT Sun Jun 28 2026

Morning clouds are breaking and will lead to sunny skies this
afternoon. Also, you may see some milky skies at times and that is
because the Saharan Air Layer has made it to the local area. Breezy
and gusty conditions are in store for the rest of today into the
evening period with southerly winds of 15 to 20 mph and gusts of 25
to 30 mph. Can`t rule out spotty wind gusts as high as 35 mph
through the period. Otherwise, hot with highs in the mid 90s over
parts of the southern Edwards Plateau and Hill Country and mid to
upper 90s across most of the local area. The hottest area is the Rio
Grande Plains and portions of the southern Edwards Plateau where
highs are forecast to reach 100 to 102 degrees. Heat index values of
100 to 107 are likely along and east of Interstate 35 corridor, the
Coastal and Rio Grande Plains areas. A few locations near the Eagle
Pass and to the south could experience heat index values around 108
to 110 for a few hours mid to late afternoon.

For tonight, the breezy conditions continue but not as gusty. Low
clouds develop mid to late evening and then spread across most of
South Central Texas through Monday morning. Lows in the 70s.

Clouds will be gone by noon Monday with sunny skies but milky
looking due to Saharan dust for the afternoon. With high pressure
dominating at all levels, southerly flow in control, and cloud-free
skies, we are anticipating another hot day and even hotter than
Sunday with highs in the upper 90s along the I-35 corridor and 100
to 102 degrees over portions of the southern Edwards Plateau and Rio
Grande Plains. Forecast heat index values a bit lower than those
today (Sunday), however still ranging from 100 to 107 along the I-35
corridor, Coastal and Rio Grande Plains. Continued breezy and gusty
with southerly winds around 15 to 20 mph and wind gusts of 25 to 30
mph.

An active dryline over west Texas will serve as the initiation
feature for storms out that way in the afternoon. However, a
steering flow from the southwest to south could bring some showers
or even a storm close to western Val Verde County in the evening.

&&

.LONG TERM...
(Tuesday through next Sunday)
Issued at 1229 PM CDT Sun Jun 28 2026

The persistent dry and hot weather conditions persist through the
work week. Daily highs in the 90s and lows in the 70s for the most
part. However, can`t rule out an isolated shower or even a
thunderstorm moving across the Coastal Plains Tuesday through Friday
afternoons with the help of the sea breeze. Same situation for the
western part of Val Verde County due to the present of the dryline
over west Texas.

&&

.AVIATION...
(00Z TAFS)
Issued at 643 PM CDT Sun Jun 28 2026

VFR conditions along with gusty southeast winds will continue at
area TAF sites through early evening. Low clouds will develop by
late evening with MVFR cigs in store for the all sites. The MVFR
cigs will persist through mid-morning, then trend back to VFR.
Gusty southeast winds will persist through the forecast period.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              78  99  76  97 /   0   0   0   0
Austin Bergstrom Intl Airport  79  98  77  97 /   0   0   0   0
New Braunfels Muni Airport     77  98  75  96 /   0   0   0   0
Burnet Muni Airport            75  97  73  95 /   0   0   0   0
Del Rio Intl Airport           78 102  77  98 /   0   0   0   0
Georgetown Muni Airport        78  97  75  95 /   0   0   0   0
Hondo Muni Airport             75  97  73  96 /   0   0   0   0
San Marcos Muni Airport        77  97  75  96 /   0   0   0   0
La Grange - Fayette Regional   79  97  76  95 /   0   0   0   0
San Antonio Intl Airport       77  97  76  95 /   0   0   0   0
Stinson Muni Airport           77  97  75  96 /   0   0   0   0

&&

.EWX WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

SHORT TERM...Tran
LONG TERM....Tran
AVIATION...Platt