*As of Aug 10, 4 AM local time.*
Current Conditions and Heat Index
McKinney is currently experiencing very hot and humid conditions as the overnight hours transition into the day. The air temperature stands at 79F, but the heat index makes it feel like 82F right now. Relative humidity is sitting at 79%, with a dew point of 72F, indicating significant moisture in the air.
Winds are blowing from the south at 9 mph, with gusts reaching up to 21 mph, while the sky remains mostly clear.
Today and Tomorrow Forecast
Today will be sunny with a high near 100F. The National Weather Service indicates heat index values as high as 105 during the day. South winds will range from 5 to 15 mph. There is only a 1% chance of precipitation, so rain is not expected. Temperatures will drop to a low near 77F tonight.
Overnight, conditions will remain mostly clear with temperatures rising to around 79F before settling near 77F. South winds will continue around 10 mph. As the night progresses into tomorrow morning, temperatures will rise again, with heat index values reaching as high as 102. Winds will increase slightly to 10 to 15 mph from the south.
Tomorrow will also be sunny with a high near 99F. Heat index values are expected to reach 105 once more. The chance of precipitation is 0%. Overnight lows will settle near 80F, with temperatures rising to around 82F later in the night. South winds will persist at 10 to 15 mph.
