SAN ANTONIO, TX 78221 Weather Forecast & Current Conditions

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SAN ANTONIO/STIN, TX
Current Weather

5:59 PM CDT AUG 30, 2026
Clear
99°F
Feels Like: 102°F
Dewpoint: 64°F
Rel. Hum.: 32%
Visibility: 10 miles
Wind: SSE at 13 mph, gusts to 18
Pressure: 29.96 inches
Last 72 hours

Local Area Snow Depth

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SAN ANTONIO, TX 78221
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TONIGHT
Mostly clear. Lows in the mid 70s. Southeast winds 10 to 15 mph.
MONDAY
Partly cloudy in the morning, then clearing. Highs in the upper 90s. Southeast winds 5 to 10 mph. Highest heat index readings up to 106.
MONDAY NIGHT
Mostly clear. Lows in the mid 70s. Southeast winds 10 to 15 mph.
TUESDAY
Mostly sunny. Highs in the upper 90s. Southeast winds 5 to 10 mph. Highest heat index readings up to 105.
TUESDAY NIGHT
Mostly clear. Lows in the mid 70s. Southeast winds 5 to 10 mph.
WEDNESDAY AND WEDNESDAY NIGHT
Mostly clear. Highs in the upper 90s. Lows in the mid 70s. Highest heat index readings up to 105.
THURSDAY
Partly cloudy in the morning, then clearing. Highs in the upper 90s. Highest heat index readings up to 105.
THURSDAY NIGHT
Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 70s.
FRIDAY
Partly cloudy in the morning, then clearing. Highs in the upper 90s. Highest heat index readings up to 105.
FRIDAY NIGHT
Mostly clear. Lows in the mid 70s.
SATURDAY
Partly cloudy in the morning, then becoming mostly sunny. Highs in the upper 90s. Highest heat index readings up to 105.
SATURDAY NIGHT AND SUNDAY
Mostly clear. Lows in the mid 70s. Highs in the upper 90s. Highest heat index readings up to 105.

Visible Weather Satellite
SAN ANTONIO, TX 78221
Infrared Weather Satellite
SAN ANTONIO, TX 78221
NEXRAD Weather Radar
SAN ANTONIO, TX 78221

SAN ANTONIO/STIN, TX 3 hourly weather forecast

weather forecast created  8:00 AM EDT  8/30/2026
Sunday
30 AUG 2026
SAN ANTONIO, TX 78221 weather forecast Day 1, 12 hours 1 PM 94° 100° Clear 2%

0% Thunder
( 12% severe)
SSE   8 46% 70°
High 99° SAN ANTONIO, TX 78221 weather forecast Day 1, 15 hours 4 PM 98° 102° Clear SSE   9 35% 66°
Clear



SAN ANTONIO, TX 78221 weather forecast Day 1, 18 hours 7 PM 95° 98° Clear 4%

0% Thunder
( 6% severe)
SE   12 39% 66°
SAN ANTONIO, TX 78221 weather forecast Day 1, 21 hours 10 PM 87° 92° Clear SSE   12 57% 70°
Monday
31 AUG 2026
SAN ANTONIO, TX 78221 weather forecast Day 2, 0 hours 1 AM 81° 86° Clear 1%

0% Thunder
( 1% severe)
SSE   9 77% 73°
Low 75° SAN ANTONIO, TX 78221 weather forecast Day 2, 3 hours 4 AM 78° 81° Partly Cloudy SSE   7 91% 75°
High 99° SAN ANTONIO, TX 78221 weather forecast Day 2, 6 hours 7 AM 77° 78° Partly Cloudy 0%

0% Thunder
( 1% severe)
E   3 94% 75°

Partly Cloudy



SAN ANTONIO, TX 78221 weather forecast Day 2, 9 hours 10 AM 84° 92° Partly Cloudy SSE   6 74% 75°
SAN ANTONIO, TX 78221 weather forecast Day 2, 12 hours 1 PM 93° 99° Clear 2%

0% Thunder
( 13% severe)
SE   8 47% 70°
SAN ANTONIO, TX 78221 weather forecast Day 2, 15 hours 4 PM 98° 102° Partly Cloudy SE   9 35% 66°
SAN ANTONIO, TX 78221 weather forecast Day 2, 18 hours 7 PM 95° 97° Partly Cloudy 0%

0% Thunder
( 5% severe)
SE   12 37% 65°
SAN ANTONIO, TX 78221 weather forecast Day 2, 21 hours 10 PM 88° 93° Partly Cloudy SE   12 54% 69°
Tuesday
1 SEP 2026
SAN ANTONIO, TX 78221 weather forecast Day 3, 0 hours 1 AM 82° 87° Clear 0%

0% Thunder
( 1% severe)
SSE   8 74% 73°
Low 74° SAN ANTONIO, TX 78221 weather forecast Day 3, 3 hours 4 AM 79° 83° Partly Cloudy SSE   5 85% 74°
High 100° SAN ANTONIO, TX 78221 weather forecast Day 3, 6 hours 7 AM 77° 78° Partly Cloudy 0%

0% Thunder
( 2% severe)
  CALM 90% 74°

Partly Cloudy



SAN ANTONIO, TX 78221 weather forecast Day 3, 9 hours 10 AM 84° 91° Clear S   5 72% 74°
SAN ANTONIO, TX 78221 weather forecast Day 3, 15 hours 1 PM 94° 99° Clear 0%

0% Thunder
( 16% severe)
SSE   7 43% 68°
SAN ANTONIO, TX 78221 weather forecast Day 3, 18 hours 4 PM 99° 102° Partly Cloudy SE   8 33% 65°
SAN ANTONIO, TX 78221 weather forecast Day 3, 21 hours 7 PM 96° 98° Clear     ESE   9 35% 64°

SAN ANTONIO/STIN, TX extended weather forecast

Wednesday
2 SEP 2026
Thursday
3 SEP 2026
Friday
4 SEP 2026
Saturday
5 SEP 2026
Sunday
6 SEP 2026
Low 79° Low 78° Low 77° Low 75° Low 75°
High 99° High 98° High 97° High 98° High 99°
SAN ANTONIO, TX 78221 weather forecast Day 4 SAN ANTONIO, TX 78221 weather forecast Day 5 SAN ANTONIO, TX 78221 weather forecast Day 6 SAN ANTONIO, TX 78221 weather forecast Day 7 <!--SEARCHED_TOWN_NAME--> weather forecast Day 8
Partly Cloudy
17% Rain
Mostly Cloudy
30% Rain
Partly Cloudy
24% Rain
Partly Cloudy
23% Rain
Partly Cloudy
15% Rain
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