Dallas residents faced a heavy, bochornoso atmosphere on Saturday, September 19, as temperatures climbed toward a high of 99°F to 100°F (37°C to 38°C) under thick cloud cover, according to regional weather reports. Local conditions combined high humidity with stagnant winds, creating significant discomfort for anyone heading outdoors.
Temperature and Humidity Conditions in Dallas
This dense blanket trapped humidity at around 36% with an atmospheric pressure of 1015 hPa, preventing direct solar exposure from offering any relief while maintaining a heavy, humid environment.
Wind Patterns and Solar Exposure
Light southerly winds offered minimal respite from the heat throughout the day. Previews from meteorological outlets indicated wind speeds hovering between 5 and 10 mph (approximately 8 to 9 km/h) with occasional mild gusts. Despite the heavy cloud cover blocking direct sunlight for much of the day, UV index metrics remained in a sensitive, unhealthy range during daylight hours, prompting local safety reminders regarding prolonged skin exposure.
Daily Climate Timeline and Nighttime Forecast
Daylight on Saturday lasted for approximately 12 hours, with the sun rising at 07:13 and setting at 19:28. As evening approached, temperatures dropped to a nighttime low around 79°F to 25°C (26°C), maintaining a minimal 2% chance of precipitation overnight while winds persisted at roughly 8 mph from the south.

Sunday Storm Outlook
Looking ahead to Sunday, September 20, weather models indicate a shift toward cloudier skies interspersed with clearer intervals, alongside a much higher probability of rain and thunderstorms. Both the National Weather Service and AccuWeather forecast a 55% chance of precipitation spanning the morning, afternoon, and evening hours. Temperatures on Sunday are projected to range between a low of 75°F (24°C) and a high of 100°F (38°C), marking a continuation of high heat coupled with active storm potential.