San Antonio drivers and residents can expect a stretch of scorching sunshine this week as temperatures stay firmly near 94°F. The heat will stick around through Thursday, with only a slight chance of relief coming by Friday and Saturday.
With heat indices climbing and road glare affecting visibility, it’s important to take extra care whether you’re on the road or spending time outdoors.
Heat, Glare, and Driving Conditions
Tuesday brings intense sunshine and rising heat across Bexar County, with the National Weather Service forecasting a high of 94°F. The day will start with light southeast winds, which won’t do much to ease the afternoon warmth.
If you’re driving along I-35 or I-10, especially during the morning or evening commute, visibility could be affected by low sun angles and glare. This is especially true for westbound routes. To stay safe:
Wear sunglasses while driving
Keep windshields clean to reduce glare
Avoid distractions, especially during peak hours
No Break in the Heat Until the Weekend
The hot weather pattern will continue through Thursday, with clear skies and little change in temperatures. Overnight lows will be in the low 70s, offering only mild relief from the daytime heat.
Wednesday and Thursday will look nearly identical to Tuesday—mostly sunny, highs near 94°F, and warm, sticky evenings. It’s a classic stretch of September heat in South Texas.
How to Stay Safe During Extreme Heat
With heat indices possibly rising above the actual temperature, it’s important to follow basic heat safety:
Drink plenty of water throughout the day
Avoid outdoor work during the hottest part of the afternoon
Use fans or air conditioning when possible
Never leave children or pets in parked vehicles
Check on elderly neighbors or those without proper cooling
Rain Chances Return Friday and Saturday
The weather pattern starts to shift slightly by the end of the week. Increased clouds arrive Thursday night, and by Friday, there’s a 20% chance of showers. Saturday continues the same pattern, with a slight chance of thunderstorms in the forecast.
While the rain chances are still low, any showers could provide brief cooling and relief from the heat. Keep an umbrella handy just in case—and keep an eye on weather updates in case those storm chances grow stronger.
San Antonio 5-Day Weather Forecast at a Glance
| Day | Forecast Summary | High Temp | Low Temp | Rain Chance |
|---|---|---|---|---|
| Tuesday | Sunny, hot with road glare | 94°F | 73°F | 0% |
| Wednesday | Mostly sunny, very warm | 94°F | 72°F | 0% |
| Thursday | Mostly sunny, increasing clouds | 94°F | 73°F | 0% |
| Friday | Slight chance of showers | 94°F | 73°F | 20% |
| Saturday | Slight chance of storms | 94°F | 73°F | 20% |
San Antonio faces a long stretch of hot, sunny weather through midweek, with little relief in sight until the weekend. Drivers should prepare for road glare during commutes, and everyone should take precautions to stay safe in the heat.
With rain chances creeping in by Friday and Saturday, some cooling relief may be on the way—but until then, it’s all about sun, sweat, and staying cool.
