From Elliot Wilson:
The warmth and mugginess will stay with us going through the overnight. Temperatures will be in the mid 80’s heading into the overnight, cooling to around 80° for the start of your Monday. It’ll feel even more humid on your way into work as Dew Points will only be a few degrees below the temperatures. As we head into the work week the triple-digits stay with us, with sunny skies dominating throughout Monday. A Heat Advisory will go into effect Monday afternoon at 1pm and last until 7pm. Highs will be at 100° for many of us with Heat Index values as high as 108° in some spots, so be cautious if you head outdoors Monday afternoon and evening.
The Heat Advisory may extend into Tuesday since we’ll see triple-digit highs again Tuesday afternoon with heat index values around 105° for most of us. However, some of us north of Highway may get a stray shower Tuesday afternoon, but most of the rain will stay up in the Metroplex. Afterwards, a high pressure system out east and a low pressure system to the northwest will usher in more moisture into our area. This will make it harder for temperatures to reach triple-digits, and it’ll also give us more spotty rain chances for the middle and end of the work week. The best rain chances will arrive Friday east of I-35 as more moisture will have accumulated by then. By the weekend, rain chances drop off and winds will start turning from the east, keeping the temperatures in the mid to upper 90’s.