Friday, July 3, 2026 — San Antonio started the holiday weekend under cloudy, muggy skies and upper-70s temps, the kind of stickiness locals know means one thing: fast heating. Forecasters say highs will jump into the mid-90s this afternoon, and with the humidity it will feel more like 100 to 101°F. Overnight lows will only slide into the mid-70s, so do not count on much late-night relief.
Afternoon Heat And Holiday Plans
The National Weather Service is calling for a high near 94°F today, with south-southeast winds around 5 to 10 mph and just a slim shot at any rain. Heat-index values could creep into the low 100s during peak afternoon hours, so it is wise to skip the heavy yard work or intense workouts from roughly 2 to 6 p.m. and keep those outdoor barbecues as shady and hydrated as possible.
Independence Day Outlook
On Saturday, July 4, the city gets more classic summer sizzle: mostly sunny skies, a high near 95°F, and heat-index values hovering near 100°F. Daytime festivals, parades, and fireworks setups will feel hot and sticky, and with only light south-southeast winds there will not be much natural breeze to help. Plan the big activities for earlier in the morning or later in the evening, and build in plenty of shade breaks between events.
Cooling Options And Safety
If you need a break from the heat, the city keeps a list of cooling sites and senior centers that open during hot spells, so check locations and hours before heading out. Keep kids and pets out of parked cars, carry water when you are outside, and get medical help if anyone starts showing signs of heat exhaustion or heat stroke. See the City of San Antonio for cooling-site locations and hours.
Looking Ahead
Forecasts point to a drier, hotter pattern settling in next week, with afternoon highs climbing into the upper 90s by midweek and only modest cooling at night. If you are lining up more outdoor time later in the week, keep an eye on updated forecasts and try to move hard physical activity to the cooler morning or evening hours.
