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Houston Logs First 90 Degrees of 2026 as Heat Index Nears 100

Forecasters expect cooler, wetter conditions by late week.

Overview

  • Houston’s official site at Bush Intercontinental, which hit 90 degrees Monday, now faces “feels like” readings near 100 as dew points hold around 70 to 75 degrees.
  • High humidity slows sweat from evaporating, so the body sheds heat less efficiently and the heat index gives a better read on health risk than the thermometer alone.
  • Tuesday and Wednesday are forecast to reach the low 90s with stout southerly winds, and scattered storms may flare late Wednesday mainly north of the I-10 corridor with localized street flooding possible.
  • A weak front midweek is likely to stall near Southeast Texas before a stronger late-week system brings cooler afternoons in the low to mid-80s and higher rain chances, with a few storms capable of gusty winds, hail, and heavy rain.
  • This late-April first 90 arrives about a week earlier than Houston’s average May 6 mark but is not record-setting, and the National Weather Service urges hydration, rest breaks outdoors, and never leaving children or pets in parked cars.