San Antonio, TX Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for San Antonio, TX.

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Current Conditions — San Antonio, TX

S ANTONIO-BOERNE (K5C1)

Cloudy

68.0 F
Humidity:100%
Wind Speed:S 10.3 mph
Barometer:29.91 in
Dewpoint:68.0 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 23 2026, 08:55 AM CDT
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5-Day Forecast — San Antonio, TX

Thursday

High 86 °F
Overcast
Thursday
Night
Low 71 °F
Overcast
Friday

High 86 °F
Isolated T-storm
Friday
Night
Low 71 °F
Mostly Cloudy
Saturday

High 91 °F
Overcast
Saturday
Night
Low 73 °F
Mostly Cloudy
Sunday

High 93 °F
Mostly Cloudy
Sunday
Night
Low 73 °F
Mostly Cloudy
Monday

High 93 °F
Mostly Cloudy

Detailed Forecast — San Antonio, TX

Thursday
Overcast. High near 86°F. Wind 8 to 10 mph, with gusts as high as 17 mph.
Thursday Night
Overcast. Low around 71°F. Wind 6 to 9 mph, with gusts as high as 16 mph.
Friday
Isolated T-storm. High near 86°F. Wind 5 to 6 mph, with gusts as high as 10 mph.
Friday Night
Mostly Cloudy. Low around 71°F. Wind 3 to 5 mph, with gusts as high as 8 mph.
Saturday
Overcast. High near 91°F. Wind 5 to 7 mph, with gusts as high as 13 mph.
Saturday Night
Mostly Cloudy. Low around 73°F. Wind around 6 mph, with gusts as high as 12 mph.
Sunday
Mostly Cloudy. High near 93°F. Wind 6 to 7 mph, with gusts as high as 13 mph.
Sunday Night
Mostly Cloudy. Low around 73°F. Wind around 7 mph, with gusts as high as 14 mph.
Monday
Mostly Cloudy. High near 93°F. Wind 5 to 6 mph, with gusts as high as 9 mph.
Monday Night
Mostly Cloudy. Low around 73°F. Wind around 5 mph, with gusts as high as 8 mph.
Tuesday
Mostly Cloudy. High near 95°F. Wind 7 to 8 mph, with gusts as high as 14 mph.
Tuesday Night
Mostly Cloudy. Low around 71°F. Wind around 6 mph, with gusts as high as 12 mph.
Wednesday
Mostly Cloudy. High near 93°F. Wind around 9 mph, with gusts as high as 17 mph.
TX Radar
Current Radar • TX
Day 1 Outlook • April 23, 2026

Observation History — San Antonio, TX

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
08:55 AM CDT S 10.3 10.00 Cloudy -- 68.0 68.0 100% NA NA 29.91 1012.9
08:35 AM CDT S 9.2 10.00 Cloudy -- 68.0 68.0 100% NA NA 29.91 1012.9
08:15 AM CDT 11.4 G 16.1 10.00 Cloudy -- 68.0 68.0 100% NA NA 29.91 1012.9
07:55 AM CDT 8.1 10.00 Cloudy -- 66.2 66.2 100% NA NA 29.90 1012.5
07:35 AM CDT 10.00 Cloudy -- NULL % NA NA M
07:15 AM CDT S 6.9 10.00 Cloudy -- 66.2 66.2 100% NA NA 29.89 1012.2
06:55 AM CDT S 6.9 10.00 Cloudy -- 66.2 66.2 100% NA NA 29.89 1012.2
06:35 AM CDT S 6.9 10.00 Cloudy -- 66.2 66.2 100% NA NA 29.88 1011.9
06:15 AM CDT S 6.9 10.00 Cloudy -- 66.2 66.2 100% NA NA 29.89 1012.2
05:55 AM CDT S 8.1 10.00 Cloudy -- 66.2 66.2 100% NA NA 29.89 1012.2
05:35 AM CDT S 8.1 10.00 Cloudy -- 66.2 66.2 100% NA NA 29.89 1012.2
05:15 AM CDT S 10.4 10.00 Cloudy -- NULL % NA NA 29.89 1012.2
04:55 AM CDT S 8.1 10.00 Cloudy -- NULL % NA NA 29.88 1011.9
04:35 AM CDT S 6.9 7.00 Cloudy -- 66.2 66.2 100% NA NA 29.88 1011.9
04:15 AM CDT 7.00 Cloudy -- NULL % NA NA M
03:55 AM CDT S 8.1 10.00 Cloudy -- 68.0 68.0 100% NA NA 29.89 1012.2
03:35 AM CDT S 9.2 10.00 Cloudy -- 68.0 68.0 100% NA NA 29.90 1012.5
02:55 AM CDT S 9.2 10.00 Cloudy -- 68.0 68.0 100% NA NA 29.91 1012.9
02:35 AM CDT S 8.1 10.00 Cloudy -- 66.2 66.2 100% NA NA 29.91 1012.9
02:15 AM CDT S 8.1 10.00 Cloudy -- 68.0 68.0 100% NA NA 29.92 1013.2
01:55 AM CDT S 8.1 10.00 Cloudy -- 68.0 68.0 100% NA NA 29.94 1013.6
01:35 AM CDT S 5.8 10.00 Cloudy -- 68.0 68.0 100% NA NA 29.94 1013.9
01:15 AM CDT S 8.1 10.00 Cloudy -- 68.0 68.0 100% NA NA 29.94 1013.9
12:55 AM CDT S 9.2 G 17.2 10.00 Cloudy -- 68.0 68.0 100% NA NA 29.94 1013.9

Regional Weather Observation

S ANTONIO-BOERNE (K5C1)

Cloudy
68.0 F

SAN ANTONIO (KSAT)

Cloudy
71.6 F

CASTROVILLE MUNI (KCVB)

Cloudy
71.6 F

KELLY AFB (KSKF)

Mostly Cloudy
72.7 F

S ANTONIO/STINSN (KSSF)

Cloudy
73.4 F

RANDOLPH AFB (KRND)

Cloudy
72.5 F
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