*As of Sep 10, 2 PM local time.*
Dangerous Heat and Afternoon Storms
McKinney is experiencing dangerous heat conditions this afternoon. The air temperature currently stands at 97 degrees Fahrenheit, but the heat index makes it feel like 102 degrees. Relative humidity is at 39 percent, and the dew point is 68 degrees.
Winds are blowing from the south southeast at 10 miles per hour, with gusts reaching 12 miles per hour. The sky is currently clear, but conditions are shifting as the day progresses.
Today and Tonight Outlook
A chance of showers and thunderstorms is expected today. The day will be mostly sunny, with a high near 99 degrees. Temperatures are expected to fall to around 97 degrees in the afternoon.
Heat index values could reach as high as 107 degrees. The chance of precipitation is 30 percent, with new rainfall amounts less than a tenth of an inch possible. South southeast winds will be around 5 miles per hour.
Tonight, a chance of showers and thunderstorms is likely before 7 p.m., followed by a continued chance between 7 p.m. and 10 p.m., and then a chance of showers and thunderstorms thereafter. The sky will be mostly cloudy. The low will be around 77 degrees, with temperatures rising to around 79 degrees overnight.
Heat index values may reach 105 degrees. East southeast winds will be around 5 miles per hour. The chance of precipitation is 40 percent, with rainfall amounts between a tenth and a quarter of an inch possible.
