AUSTIN, TEXAS — A breezy cooldown is underway in Mueller today, with winds around 20.7 km/h (12.9 mph) and temperatures dropping quickly this evening before a warmer, more humid pattern returns later this week. Data from Open-Meteo shows 22.1°C (71.8°F) at 4 p.m., with gustier conditions making it feel cooler during school pickup and errands along Aldrich Street and the East 51st corridor. Earlier Mueller Today coverage has highlighted how families often stack short outings around Thinkery, Alamo Drafthouse Cinema and the lake-area parks, and this week’s timing favors planning those walks for the calmer, less humid windows.
The coolest stretch arrives overnight into Thursday morning. Temperatures slide from about 19.6°C (67.3°F) at 5 p.m. to a low near 14.4°C (57.9°F) around 9 a.m. Thursday, while humidity stays high, generally mid-80s to low-90s percent before easing midday. Winds remain noticeable into tonight, peaking in the low 20s km/h (about 13 mph) early this evening, then settling closer to 9 to 15 km/h (6 to 9 mph) Thursday. For outdoor plans at Mueller Lake Park and nearby City of Austin Parks and Recreation spaces, the most comfortable time for a longer walk or playground stop looks like late Thursday morning into early afternoon as humidity falls toward the 50s and 40s percent.
From Friday through early next week, afternoons trend warmer, topping out near 28.6°C (83.5°F) by Friday evening, with muggy mornings returning. Humidity ranges widely across the period, from a very humid 93% at times to a much drier floor near 31%, and that swing matters because high humidity can make moderate temperatures feel sticky while lower humidity can make warmer readings feel more tolerable when you are moving between AISD pickup lines, the Thinkery drop-in routine, and quick stops at neighborhood shops. The windiest period in the outlook arrives Saturday midday to afternoon, when winds climb into the low to mid-20s km/h (about 14 to 15 mph), which can help with heat but also increase dehydration during sports and park time.
Safety actions: dress kids for a cool start Thursday, keep a light layer handy for breezy evening walks, and shift strenuous outdoor exercise to mornings when it is cooler but not at peak humidity. During warmer afternoons, drink water before you feel thirsty, take shade breaks, and check on older neighbors and anyone with limited access to air conditioning. For outages or heat-related concerns at home, the city has warned that extended heat combined with power loss can create dangerous indoor temperatures, especially for older residents, according to City of Austin. Report downed lines or outages to Austin Energy, call 311 for non-emergency city help, and call 911 for life-threatening emergencies.
The longer view is that this week’s 14.4°C to 28.6°C (57.9°F to 83.5°F) spread is not extreme for May, but it fits a broader local trajectory of hotter summers and fewer cold spells, according to Austin Climate Action and Resilience, and rising heat index concerns as humidity compounds heat, according to Global Heat Health Information Network. City planning has focused on neighborhood-scale mitigations such as cool pavement pilots and expanding tree planting, particularly in Eastern Austin, according to KUT Radio. At the same time, an audit found Austin’s heat-resilience framework still needs clearer targets, stronger coordination and more funding, according to Austin Monitor, and local research has emphasized that heat stress does not fall evenly across the city, according to Bridging Barriers News. For Mueller’s day-to-day planning, more shade and healthy tree canopy matter as temperatures rise and rainfall swings become more erratic over time, according to USDA Climate Hubs, but the immediate takeaway is simple: Thursday morning is the coolest, Friday and Saturday afternoons are the warmest and breeziest, and the stickiest periods cluster around overnight and early-morning hours.
