A cold front will go through the area mid day today, lowering the dewpoints over northern Missouri which will help keep the heat index values below 90 degrees, while south of the Missouri River will still see heat index values in the mid 90s with a slight chance of a shower early in the morning. A much drier Saturday will keep temperatures and heat index values in the upper 80s before the pattern starts to uptick in temperatures and dewpoints Sunday. There is a chance for isolated to scattered thunderstorms Sunday afternoon with heat index values reaching into the mid 90s as a wave of higher heat and humidity start up. Here’s the 7-day forecast from the National Weather Service: 

Today: Sunny, with a high near 87. West wind 5 to 11 mph becoming north in the morning.

Tonight: Mostly clear, with a low around 65. North wind 5 to 7 mph becoming calm after midnight.

Saturday: Sunny, with a high near 87. Calm wind becoming southwest around 6 mph in the afternoon.

Saturday Night: Mostly clear, with a low around 68. South wind 3 to 5 mph.

Sunday: A slight chance of showers and thunderstorms after 1 p.m. Mostly sunny, with a high near 90. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 20%.

Sunday Night: Mostly clear, with a low around 73.

Monday: Sunny, with a high near 92.

Monday Night: Partly cloudy, with a low around 75.

Tuesday: Mostly sunny, with a high near 93.

Tuesday Night: Partly cloudy, with a low around 75.

Wednesday: Mostly sunny, with a high near 94.

Wednesday Night: Partly cloudy, with a low around 74.

Thursday: Mostly sunny, with a high near 92.