*As of Jul 22, 4 AM local time.*
Current Conditions and Alerts
It is currently Wednesday overnight in McKinney, TX, with clear skies and an air temperature of 81F. The heat index feels like 86F due to a relative humidity of 84% and a dew point of 75F. Winds are light at 6 mph with gusts to 4 mph.
Multiple National Weather Service alerts are active for the area. An Extreme Heat Warning with severe severity is in effect until July 22 at 8:00PM CDT. Additionally, a Heat Advisory with moderate severity runs until July 23 at 8:00PM CDT.
An Air Quality Alert, issued on July 21, is also currently active. These alerts highlight the dangerous combination of extreme heat and poor air quality that residents are experiencing.
Forecast Overview
Today will be sunny with a high near 102F. The National Weather Service indicates heat index values as high as 114F. Northeast winds will blow at 5 to 10 mph. The chance of precipitation is minimal at 2%. Temperatures will remain high, with a low near 82F expected later.
Tonight, conditions will remain clear. Temperatures will drop to a low around 82F, but will rise to around 84F overnight. Winds will shift to the west and become calm, around 0 mph. The oppressive humidity will persist, keeping the heat index elevated.
Tomorrow, the sun will return with a high near 98F. Heat index values are expected to reach as high as 105F. East winds will pick up slightly, blowing at 5 to 10 mph.
