Houston is experiencing unseasonably warm weather, with temperatures reaching 68°F (20°C) as of March 25, 2026. A high-pressure system is responsible for the clear skies and elevated temperatures. This weather pattern is expected to persist, leading to a higher-than-normal heat index. High humidity levels combined with elevated temperatures can lead to a higher heat index, making it feel even hotter than the actual temperature. This can increase the risk of heat exhaustion and heatstroke, especially for those who are sensitive to heat or engage in strenuous outdoor activities.