*As of Sep 21, 2 PM local time.*
Extreme Heat Dominates Afternoon
McKinney residents are facing intense heat this afternoon. The current air temperature stands at 93F, but the combination of humidity and heat makes it feel like 98F. The sky is currently clear, with relative humidity at 44% and a dew point of 68F.
Winds are light, blowing from the north northeast at 3 mph with gusts up to 4 mph. This muggy warmth is expected to persist, with heat index values potentially reaching 101F later in the day. The high temperature is forecast to be near 97F, while the low will drop to around 72F.
There is a 31% chance of precipitation, with a possibility of showers and thunderstorms breaking through the sunny conditions.
Overnight and Tomorrow Outlook
Tonight, the chance for showers and thunderstorms remains before 10 pm. Afterward, skies should become mostly clear. Temperatures will fall to a low of 72F, though they may rise slightly to around 74F overnight.
Winds will shift to 5-10 mph from the north northeast. Heat index values could reach 97F during the evening hours. Tomorrow brings a similar pattern of intense heat with a high near 96F and a low of 72F.
The sky will be mostly sunny, and the chance of precipitation drops significantly to just 5%. Winds will continue to blow from the north northeast at 5-10 mph. Heat index values are expected to peak at 102F, making the perceived temperature even higher than the actual air temperature.
