Houston is under a Heat Advisory today, Juneteenth, with heat index values climbing toward 110 degrees — and that number should shape every decision you make about being outdoors. Here's your complete Houston weather forecast for Thursday, June 19, 2026.
The morning starts with patchy fog, clearing before mid-morning. After that, expect partly sunny skies with scattered showers and thunderstorms possible through the afternoon — a 19% chance of precipitation. The official high sits near 93°F, but Houston humidity pushes the feels-like temperature well above that.
For outdoor Juneteenth celebrations, the window is clear: get outside before noon. The afternoon heat is serious, and the Heat Advisory runs through tomorrow evening. Stay hydrated, check on elderly neighbors and family members, and never leave children or pets in parked cars.
Tonight, storm chances actually increase. Showers and thunderstorms become more likely after 7 p.m., with a 30% overnight chance. The low settles around 81°F, with southeast winds at 5 to 10 mph keeping the air thick.
The weekend continues in a similar pattern — Saturday brings more storm chances and a high near 92°F, while Sunday clears to mostly sunny by afternoon with a high near 93°F. Heading into next week, the storm threat fades. Monday through Wednesday look drier and sunny, with highs climbing from 94°F to 95°F.
For your morning commute, the patchy fog means reduced visibility early — give yourself extra time and extra following distance.
Stay cool, Houston. Carry water, seek shade, and celebrate safely.
This episode includes AI-generated content.