*As of Aug 8, 5 PM local time.*
Current Conditions and Heat Index
McKinney is experiencing intense heat this evening, with the air temperature at 91F and a feels-like reading of 97F. The atmosphere remains quite humid, evidenced by a dew point of 70F and relative humidity holding at 49%. Winds are blowing from the south-southeast at 14 mph, though gusts have been recorded up to 12 mph. The sky is currently mostly clear as Saturday evening progresses.
Today’s Forecast and Precipitation
The day will remain very hot with a high near 99F. According to the National Weather Service, heat index values could climb as high as 102 during peak hours. There is a slight chance of showers and thunderstorms today, with precipitation chances estimated at 22%.
This aligns with the official forecast which notes a slight chance for these storms before 7pm tonight. Winds will be lighter than current readings, shifting to south-southeast around 5 mph. Temperatures will drop to a low near 77F overnight, though they may rise slightly to around 80F later in the night.
The heat index is expected to reach 101 during this period.






