Weather Tomorrow

Weather Tomorrow for ZIP 78201

San Antonio, TX · View full San Antonio forecast

Heat AdvisoryUntil Aug 25, 6:00 AM

Heat Advisory issued August 24 at 12:26PM CDT until August 26 at 7:00PM CDT by NWS Austin/San Antonio TX

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

Tuesday, August 25, 2026

102°Low 76°FColdHot
Clear

Precip chance

1%

Wind

5-10 mph

Humidity

57%

Feels like

100–78°F

Data source: National Weather Service (NOAA) · Updated just now

Tomorrow by Hour

76°Temperature trend102°
TimeTempConditionRain %Wind
5 AM84°FClear
0%
10 mph SSE
6 AM82°FMostly Clear
0%
10 mph S
7 AM81°FMostly Clear
0%
5 mph S
8 AM80°FMostly Clear
0%
5 mph S
9 AM78°FMostly Clear
0%
5 mph SSW
10 AM78°FMostly Clear
0%
5 mph SSW
11 AM77°FMostly Sunny
0%
5 mph SW
12 PM76°FMostly Sunny
0%
5 mph SSW
1 PM77°FMostly Sunny
0%
5 mph SSW
2 PM79°FSunny
0%
5 mph SW
3 PM84°FSunny
1%
5 mph SSW
4 PM88°FSunny
1%
5 mph SSW
5 PM92°FSunny
1%
5 mph S
6 PM95°FSunny
1%
5 mph S
7 PM98°FSunny
1%
5 mph SSE
8 PM100°FSunny
1%
5 mph SE
9 PM101°FSunny
1%
5 mph SE
10 PM102°FSunny
1%
5 mph SE
11 PM102°FMostly Clear
1%
5 mph SSE
12 AM100°FClear
0%
5 mph SSE
1 AM98°FClear
0%
5 mph SSE
2 AM93°FClear
0%
10 mph SSE
3 AM90°FMostly Clear
0%
10 mph SSE
4 AM87°FMostly Clear
0%
10 mph SSE

Precipitation Timeline

No significant precipitation expected tomorrow.

What to Wear Tomorrow

Extreme heat — stay cool and protected

Clothing

  • Lightest possible clothing
  • Wide-brim hat
  • UV-protective shirt if outdoors

Footwear

Breathable sandals

Accessories

  • Sunglasses
  • Sunscreen

Conditions

High: 102°F

Low: 76°F

Wind: 5-10 mph

Rain: 1%

Big temperature swing (76°F to 102°F) — dress in removable layers.

Best Time to Be Outside Tomorrow

11 AM – 12 PM94

Excellent conditions for outdoor activities (dry, comfortable temp, light wind, daylight)

5a11a5p11p