Texas Summer Weather Alert: Heat Index Near 101°F by Saturday Afternoon — Haze and Thunder Risk for Houston

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Hazy skies
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Houston, Texas – Texans heading outdoors Saturday should brace for a steamy, storm-prone day as heat and humidity return across the Houston metro. Temperatures will soar to 93°F by mid-afternoon, with haze and isolated thunderstorms possible after 2 p.m.

According to the National Weather Service in Houston, a 40% chance of showers and thunderstorms will develop Saturday afternoon, especially across southern Harris County and surrounding areas. Southeast winds near 5 mph and high humidity could push the heat index to 101°F. Drivers on I-45 and I-69 should be alert for sudden downpours and reduced visibility in haze.

The day will start off muggy and mostly sunny, but rising moisture levels could trigger pop-up storms from mid-afternoon into early evening. While severe weather isn’t expected, brief lightning, gusty winds, and ponding on roads are possible. Residents should hydrate frequently, limit outdoor work during peak heat, and monitor local alerts.

Skies will clear by Saturday night, setting up a calmer Sunday with sunny skies and highs near 94°F. Another chance for thunderstorms returns Monday afternoon as the summer pattern continues.

🔎 Five-Day Forecast: Houston, TX (July 5–10)

  • Saturday: High 93°F | PM storms after 2PM | Hazy with heat index near 101°F
  • Sunday: High 94°F | Mostly sunny | Slight chance of PM storms
  • Monday: High 93°F | Sunny early | 40% chance of storms after 1PM
  • Tuesday: High 93°F | PM storms possible | Low around 77°F
  • Wednesday: High 94°F | 30% chance of afternoon storms | Hot and humid