 For the day tomorrow, a new excessive heat warning goes into effect at 11 o'clock until 8 o'clock tomorrow night. 97 to 102 for high heat index values upwards of 110 degrees. At this hour, it is 101 degrees at Reagan National with a feels like temperature. This is really going to go, whew, at 106. It also feels like 106 in Leesburg, 108 in Quantico, and 102 in Frederick, Maryland.