Houston is starting Sunday under mostly clear skies and temperatures near 80 degrees, but the calm morning will give way to a hot, humid afternoon. Highs should reach about 95 degrees, with the heat index climbing as high as 109 and scattered showers and thunderstorms possible after 10 a.m.
Heat Peaks Before Afternoon Storms
A Heat Advisory is in effect from 11 a.m. to 6 p.m. Sunday as dangerous heat and humidity settle over the area. The National Weather Service Houston/Galveston advises residents to drink plenty of fluids, stay in air conditioning or shade, limit strenuous activity and check on neighbors who may be vulnerable to heat illness.
South winds should stay around 5 to 10 mph, while the rain chance rises to about 40% during the day. Any storms will be hit-or-miss, with roughly a tenth to a quarter-inch of rain possible where downpours develop, so one neighborhood could get a quick soaking while another stays mostly dry.
Another Hot Week Is On The Way
Monday should reach 93 degrees with a 40% chance of afternoon showers and thunderstorms, followed by another 95-degree day Tuesday with only a slight storm chance. Highs ease into the low 90s Wednesday through Saturday, but overnight lows remain mostly in the upper 70s and around 80, offering limited relief after sunset.
Storm chances will continue most days, with locations closer to the coast generally more likely to see rain than areas farther inland. Galveston should run a few degrees cooler than Houston, but the broader region is expected to remain warmer than seasonal averages through the week.
Morning And Evening Are Best For Outdoor Plans
Sunday errands, exercise and outdoor work will be safer and more comfortable early in the day or after sunset. If you must be outside during the advisory, wear lightweight clothing, take frequent breaks in shade or air conditioning, and move indoors immediately if you develop symptoms of heat exhaustion.
The advisory adds a sharper safety concern to the weekend setup outlined in Hoodline's earlier forecast. The immediate Houston forecast remains the same familiar late-summer formula: bright skies, sticky heat and thunderstorms that may arrive with little warning.
