Houston, Texas, is facing a brutal stretch of triple-digit heat as heat index values climb to 105°F on Sunday, July 20. Residents, especially those commuting along I-45, US-59, and SH 288, should prepare for dangerously hot conditions during the peak afternoon hours. The National Weather Service forecasts a high of 96°F under mostly sunny skies, with heat index values expected to surpass 100°F by midday and remain dangerously high well into the early evening. A south wind of 5 to 10 mph will offer little relief, making it crucial for residents to practice heat safety.
Heat Safety and Precautions
As temperatures soar, it’s essential to stay safe during the extreme heat. Limit strenuous outdoor activity, stay hydrated, and avoid leaving children or pets in vehicles. Even brief exposure to extreme heat can cause heat exhaustion or heat stroke, so it’s important to take breaks in cooler environments. The National Weather Service recommends drinking plenty of water throughout the day to avoid dehydration and other heat-related illnesses.
Looking Ahead: More Heat and Thunderstorms Possible
The heatwave will continue into Monday and Tuesday, with highs of 96°F and lows around 77°F. Sunshine will persist through these days, but by Wednesday, July 23, temperatures will climb to 97°F. The first potential break from the heat comes Thursday and Friday, as a 20-50% chance of afternoon showers and isolated thunderstorms returns to the forecast. This could provide some relief from the oppressive heat.
Impact on Infrastructure and Health Risks
This extended period of dry, oppressive heat could place significant strain on HVAC systems, leading to potential issues with air conditioning units as they work overtime. Wildfire risks may also rise across dry brush areas, and power grids could feel pressure as residents rely heavily on air conditioning to cope with the heat.
Five-Day Weather Forecast for Houston (July 20-25)
Sunday, July 20: Mostly sunny, high of 96°F (heat index 105°F)
Monday, July 21: Sunny, high of 96°F, low of 77°F
Tuesday, July 22: Sunny, high of 96°F, low of 77°F
Wednesday, July 23: Sunny, high of 97°F
Thursday, July 24: 20% chance of afternoon storms, high of 96°F
Friday, July 25: 50% chance of storms, high near 94°F
Houston is in for an intense stretch of heat, with temperatures reaching the 90s and heat index values pushing 105°F. While the scorching conditions are expected to last through midweek, some relief may come later in the week with the return of thunderstorms. It’s important to stay hydrated, limit outdoor activity, and be mindful of the risks posed by extreme heat.
