San Antonio, Texas 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

055
FXUS64 KEWX 222313
AFDEWX

Area Forecast Discussion
National Weather Service Austin/San Antonio TX
513 PM CST Mon Dec 22 2025

...New AVIATION...

.KEY MESSAGES...

- Medium to high chances for fog Tuesday morning with the highest confidence
  over the Hill Country and southern Edwards Plateau.

- Unseasonably warm weather continues through the week.

&&

.SHORT TERM...
(Tonight through Tuesday night)
Issued at 1218 PM CST Mon Dec 22 2025

Clouds continue to dissipate early this afternoon with today
beginning a stretch of warm temperatures for South Central Texas.
Highs will range from the mid 70s to low 80s through mid-week, with
slightly cooler conditions in portions of the Hill Country and
southern Edwards Plateau. Any clearing this afternoon and evening
will be short lived as persistent southerly flow will aid in cloud
redevelopment each night. Fog is likely tonight into Tuesday morning
with HREF guidance indicating a 60 to 90 percent chance for
visibility of less than a half mile near the Balcones Escarpment.
Fog will still be possible elsewhere in the morning, but there`s
just less confidence than over the previously mentioned area. Expect
similar conditions for Wednesday morning as well. Lows will be warm
each night from the upper 50s to mid 60s. There could be a few
isolated showers on Tuesday as an mid-level disturbance lingers near
South Texas, but kept PoPs below 15 percent given the dominant ridge
in place.

&&

.LONG TERM...
(Wednesday through next Monday)
Issued at 1218 PM CST Mon Dec 22 2025

Warm and dry weather are forecast as persistent upper level ridging
remains in place mid to late week. High temperatures through
Saturday will be from the upper 70s to low 80s including Christmas
Day. Daily record highs may be challenged, especially on Friday and
Saturday. With persistent southerly flow, expect a pattern of low
clouds developing overnight and decent clearing late morning or
early afternoon. Additionally, fog chances continue each morning as
well. There is slightly better confidence that a pattern change will
occur sometime Sunday into early next week as a cold front drops
into the area. Low rain chances return to the forecast Sunday with
cooler temperatures behind the front. Since there still remains some
uncertainty this far out, continue to monitor the forecast for
changes.

&&

.AVIATION...
(00Z TAFS)
Issued at 506 PM CST Mon Dec 22 2025

The TAF trends for the next 24 hours is not too different than
the projections were for this time yesterday. Overnight skies
clouded up faster last night and helped prevent areas around
I-35 from fogging up. Skies should begin to cloud up again around
3Z or roughly the same time as last night, but the surface dew
points will be warmer and easier for temperatures to cool to later
tonight. Thus we`ll continue to run with a broad period of
overnight IFR cigs with a period of LIFR or worse conditions
possible near daybreak. The warm air regime could allow for
conditions to improve toward VFR faster than we show, but the
NAM/GFS based MOS seem to agree with the timing of how today`s
clouds lifted.

&&

.PRELIMINARY POINT TEMPS/POPS...
Austin Camp Mabry              78  64  79  62 /   0   0   0   0
Austin Bergstrom Intl Airport  78  65  81  62 /   0   0   0   0
New Braunfels Muni Airport     78  64  79  62 /   0   0  10   0
Burnet Muni Airport            76  62  77  61 /   0   0   0   0
Del Rio Intl Airport           77  60  79  63 /   0   0   0   0
Georgetown Muni Airport        77  64  79  62 /   0   0   0   0
Hondo Muni Airport             77  62  79  61 /   0   0   0   0
San Marcos Muni Airport        78  64  81  62 /   0   0   0   0
La Grange - Fayette Regional   80  66  80  62 /   0   0   0   0
San Antonio Intl Airport       77  66  79  64 /   0   0  10   0
Stinson Muni Airport           79  67  79  65 /   0   0  10   0

&&

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

$$

SHORT TERM...27
LONG TERM....27
AVIATION...18