Tuesday, June 2, 2026: San Antonio is waking up to pockets of fog and mist, with temperatures hovering around 77°F and humidity that feels every bit as sticky as it sounds. The fog should thin by mid-morning, giving way to mostly sunny skies and a hot afternoon, with a high near 92°F and heat index values pushing close to 100°F. East-southeast winds will stay light at 0 to 10 mph, so do not expect much natural air conditioning if you are outside.
Afternoon Heat and Slim Shot at Evening Showers
Most of the day looks dry and hot, with only a small chance for isolated pop-up showers this evening, roughly 10 to 20 percent, mainly after 7 p.m. Overnight, temperatures should settle near 74°F. Any storm that does manage to bubble up could drop a brief heavy downpour and kick up some gusty winds, especially near the I-35 corridor and across the Coastal Plains. If you have evening plans, take a quick look at radar before heading out and give yourself extra commute time if the roads turn wet.
Heavier Rain Risk Later This Week
Rain chances rise through the week as deep tropical moisture streams north, and the main concern now centers on Friday into Saturday. An approaching upper-level low could pull very moist air over the region, a setup that may push precipitable-water values near or above 2 inches, which is on the high side for early June. That bumps up the risk of torrential downpours and localized flooding. According to the NWS Austin/San Antonio, the timing and exact placement of the heaviest rains are still uncertain, so it is worth keeping an eye on forecast updates.
Stay Cool and Watch Low Spots
Heat-safety basics are still the name of the game today. Stay hydrated, try to limit strenuous outdoor activity from about 2 to 7 p.m., and take advantage of air-conditioned public spaces when you can. The City of San Antonio lists libraries, community centers and other places to stay cool, and also offers heat-safety tips for residents. You can call 3-1-1 for assistance or check city resources online. Keep a weather app handy, and if heavy rain arrives later this week, avoid driving through flooded low spots, no matter how shallow they might look.
