An upper level low is the reason temperatures have been so cool all week… its also the reason why July 4th was so cool with rain.  However temperatures look to get much warmer as we head through the week as our pattern begins to reverse shoving a ridge right into the heart of the United States.

Below is a posting of the 2oomb maps showing the location of the Jetstream by Thursday evening.  While it has moved to our north by this point it is close enough to let in some much warmer weather.  the 850 mb chart also has a plot of temperatures showing how the warmer air is working in aloft.

The raw data is posted above…. posted below is the 850 temperature chart with some embellishments.

I circled Ohio (in black) so that it would be a little easier to see… but that huge ridge in the middle of the country is going to gradually build in.  With that system humidity levels will rise and temperatures will warm back into the upper 80’s and low 90s.  Right now the models only have the heat building in temporarily with another cool front moving through by next weekend, but the further we get into July and August the shorter our cool downs will be.