Houston woke up sweaty on Monday, July 27, 2026, with clear skies, temperatures hovering near 79°F, and dew points parked in the mid-70s. The result is air that feels heavier than the thermometer suggests. There is little relief on tap through the day as highs head for the upper 90s, and in the muggiest neighborhoods the afternoon will feel more like the low 100s. Overnight lows are expected to linger near 79°F, which means sticky, restless nights for anyone without air conditioning.
The National Weather Service is calling for a high near 98°F on Monday, July 27, 2026, with heat-index values topping out around 104°F. On Tuesday and Wednesday, highs are projected to edge up to roughly 99–100°F, pushing heat-index readings even higher. Forecasters point to a strengthening high-pressure "heat dome" across north Texas and say Heat Advisories are likely later in the work week, according to NWS Houston/Galveston.
Afternoon Heat And The Commute
The most punishing stretch of the day will be mid-afternoon, roughly from 2–6 p.m., when both outdoor work and the drive home become peak times for heat stress. Southwest winds are expected to stay light, generally around 5–10 mph, so there will not be much breeze to help out. Inland areas will bake the most, while coastal spots run just a touch cooler.
Foggy Mornings, Little Overnight Relief
Overnight humidity and lows stuck near 79°F will help patchy fog form in the early to mid-morning hours, trimming visibility on local surface streets for drivers. Rain chances stay very low through midweek, with only a slight bump in the odds for showers or storms by the weekend.
Where To Cool Off
For anyone who needs a break from the heat, Harris County and city partners maintain lists of cooling-center and library locations. Residents can dial 3-1-1 or 2-1-1 to track down the nearest open site. For official activation notices and additional heat-related resources, check ReadyHarris.
Heat Safety Quick Tips
Drink water regularly, shift heavy outdoor work to the early morning or evening, and keep an eye on older neighbors and anyone with medical vulnerabilities. Never leave children or pets alone in vehicles, even for a short errand. If you or someone nearby feels faint, dizzy, or nauseous, move to air conditioning as quickly as possible and seek medical help right away.
