Tracking a hot and humid weekend, rain chances return next week

TONIGHT: Mostly clear to partly cloudy with lows in the mid-upper 60s.

TOMORROW: Mostly sunny, hot, and breezy with highs in the lower to mid-90s. Heat index between 98-100.

EXTENDED: . I'm tracking a small eastward advance in upper high pressure that will keep any rain out of the area tomorrow, and a warm front to our north is pulling in southwesterly winds tonight into tomorrow, bringing up the humidity. Temperatures rise into the low to mid-90s tomorrow with a heat index in the upper 90s. I've adjusted Sunday to be a touch cooler now with a weak cold front moving through sometime during the day. That will bring a few more clouds and keep us in the low 90s. Next week, the upper pattern starts to break down as high pressure weakens and low pressure to our east begins to retrograde to the west, putting us in line for waves of disturbances to trigger showers and storms. We'll have chances to see rain between Monday and Wednesday, but the best shot at widespread measurable rain will be on Tuesday for much of Mid-Missouri. We could see 1-2" or so of rain in that time frame. Temperatures will be much cooler than average during that time frame, with highs in the low 80s each day. Another front comes through on Friday night or next Saturday, but temperatures look to remain near or below average even into next weekend.