San Antonio rolled out of bed to a soupy 72°F at dawn on Saturday, May 16, with the kind of humidity that fogs your glasses before you hit the driveway. Temperatures are set to climb into the low 90s this afternoon under mostly sunny skies, and the thick air will make it feel even hotter than the thermometer suggests. Afternoon highs should land near 92°F, with only a slim chance of a stray shower sneaking through.
Afternoon Winds Start to Whip
South-southeast winds will ramp up to about 5–15 mph this afternoon, with gusts that could push up to 25 mph. The breeze will not let up much tonight, either. Saturday night gusts may reach around 30 mph, enough to send lightweight patio furniture scooting and kick up dust along some area roads. It is a good idea to tie down anything that is not nailed in and be extra cautious if you are driving a high-profile vehicle. With dew points climbing, evening outdoor plans will feel muggier as the night goes on.
Heat and Humidity Lock In Through Early Week
High temperatures are expected to stay in the low to mid 90s from Sunday, May 17, through Tuesday, May 19. On the worst days, some locations could see heat index values pushing near 100–105°F. For anyone looking for relief or guidance on how to handle the heat, the City of San Antonio lists cooling resources and safety tips.
Storm Chances Creep Back Next Week
A shift in the weather pattern will bring back a better shot at showers and thunderstorms by Tuesday afternoon, May 19. The highest chances for rain arrive Wednesday and Thursday, May 20–21, and clusters of storms Tuesday night could deliver heavier downpours. Forecast guidance from the National Weather Service Austin/San Antonio points to higher probabilities of precipitation in the middle of the week and the potential for more organized storms.
How to Ride Out the Heat and Wind
Try to schedule strenuous outdoor work or workouts for the early morning or later evening hours, keep water handy, and check for any updated heat advisories if your job keeps you outside. Secure loose items ahead of those gusty evenings, stay tuned to the forecast as storms approach midweek, and remember the usual Texas rule if heavy rain hits: avoid roads that start to flood.
