Early Sunday in Austin feels like walking into a steam room, with mostly cloudy skies, temperatures hovering around 78°F, and dew points stuck in the mid-70s. That thick humidity is not going anywhere, as highs climb into the low 90s before scattered storms move in later on Sunday, June 14, 2026.
Afternoon Storm Threat
The main storm window hits Sunday afternoon, roughly between 1 p.m. and 4 p.m. Expect a high near 93°F, with heat-index values pushing up to about 105°F. Any storm that pops could drop a quick quarter to half inch of rain with brief heavy downpours, along with gusty winds and frequent lightning. The National Weather Service Austin/San Antonio pegs the metro area at about a 60% chance of afternoon thunderstorms.
What This Means For Your Commute
If you are driving, give yourself some extra time. Slow-moving showers can lead to quick ponding in low spots and slick streets, especially during heavier bursts of rain. Anyone with outdoor plans or jobs outside should try to shift activities earlier or move them indoors, and keep water handy during the peak midday heat.
Persistent Flooding Risk Through Early Week
Storms are likely to make repeat visits Sunday night and again Monday and Tuesday, as deep tropical moisture hangs around. Many spots could see 1 to 2 inches of rain, with locally higher totals where storms stall. Forecasters say a Flood Watch may be needed if current trends continue. For more on the humid pattern that has been building this month, see our sweaty start for Austin.
Simple Safety Tips
Avoid driving through flooded roads, head inside when lightning is nearby, and keep a charged phone plus an alternate route in mind if heavier cells pass over your neighborhood. Keep an eye on live radar and official updates through the afternoon to track storm timing and any changing impacts.
