Texas Weather Alert: 104° Heat Index Hits Fort Worth by Monday, July 21st — Summer Weather Alert for I-35 Travelers

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Texas weather
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Fort Worth, Texas – North Texans should brace for another scorcher Monday, July 21st, as temperatures climb toward 99°F with a heat index peaking near 104°F.

According to the National Weather Service in Fort Worth, the city will experience sunny skies Monday with strong southern winds gusting up to 15 mph. Heat index values may push well beyond 100°F by late morning. Residents are urged to stay indoors during peak hours, hydrate frequently, and avoid unnecessary midday travel—especially along exposed roadways like I-35, where sun glare and heat can compound driver fatigue.

By Monday night, Fort Worth will remain mostly clear with lows around 78°F, offering little overnight relief. Conditions persist into Tuesday, with more 97–99°F highs and continued warm breezes from the south. Winds will remain steady, gusting as high as 20 mph through midweek.

Looking ahead, the area will face persistent triple-digit heat through the weekend. Wednesday and Thursday bring highs of 98°F and 99°F respectively, with little cloud cover to offer relief. By Friday, Fort Worth could crack 100°F for the first time this summer.

Five-Day Forecast (July 21–July 26):

  • Monday: Sunny, high 99°F, heat index up to 104°F
  • Tuesday: Sunny, high 97°F, gusts up to 20 mph
  • Wednesday: Mostly sunny, high 98°F
  • Thursday: Sunny, high 99°F
  • Friday: Hot, high near 100°F
  • Saturday: Continued heat, highs in upper 90s expected

⚠️ Weather alerts remain possible as heat builds through the week. Stay updated with NWS bulletins and limit outdoor exposure.