I suspect there's still some etrnovrapspiaation going on, mainly due to the delayed growing season this year and this past week's heat.. corn for example, a major moisture source, is just maturing now in many areas which is later than usual. Dewpoints south of us in ND were only in the midteens (e.g. Fargo) so I suspect the higher dewpoints we saw today were locally enhanced.Even so, I was surprised how humid it got this afternoon after such a cool morning (down to 11C) Those southerly winds will be even stronger tomorrow (gusting 60 up the valley) which will help ventilate those hot and humid conditions somewhat. As Scott alluded to, looks like we could see some severe weather by Thursday evening as cold front approaches SW MB. Looks like we're finally getting our July weather!