San Antonio’s first fall weekend won’t bring sweater weather—drivers and families should prepare for another stretch of hot afternoons. Temperatures will climb into the low 90s both Saturday and Sunday, keeping heat on I-35 and neighborhood parks well into early October.
According to the National Weather Service in New Braunfels, Friday marks the start of a warm, dry pattern. Highs will reach 92 by Saturday afternoon under mostly sunny skies. Winds will stay light, but the dry air and lingering warmth mean residents should limit outdoor activity during peak afternoon hours.
Saturday evening remains partly cloudy with mild lows near 69. On Sunday, highs reach 91 again, continuing the trend of unseasonably warm fall weather. Drivers on I-35 and U.S. 90 may face hazy stretches from lingering heat and dry ground. Hydration and shade breaks are essential for anyone attending outdoor football games, festivals, or weekend travel.
The pattern begins to shift by Monday as southeast winds bring slightly more moisture. Though highs stay near 89 to 90 early in the week, a cooling trend is likely by midweek. Forecasters note that Wednesday, October 1, could bring the first hint of fall’s cooler air, with highs near the mid-80s.
Hot weather continues to pose risks this weekend, but the wait for a real October cooldown may soon be over.
Five-Day Forecast for San Antonio, TX
- Friday: Sunny, high 92, low 68
- Saturday: Mostly sunny, high 92, low 69
- Sunday: Mostly sunny, high 91, low 69
- Monday: Partly sunny, high 89, low 69
- Tuesday: Mostly sunny, high 89, low 68
- Wednesday (Oct. 1): Sunny, high 82
