While a core of high pressure currently situated atop the Great Lakes continues to keep the skies clear across the Tri-State, the northerly winds it's providing us with is also carrying more smoke and particulate from the numerous wildfires out west into the Ohio Valley - this has made for a hazy week thus far. The northerly winds are expected to stick around this evening and overnight along with those clear skies; the combination of the two will help drive temperatures back into the mid to upper 60s early Thursday morning. That haze will undoubtedly make for another vivid sunrise (5:45 AM) with a temperature around that time sitting at 68° in Evansville.
Conditions have remained quite comfortable in recent days, but the aforementioned complex of higher pressure isn't expected to linger over the Midwest much longer - it's current track places it stalling out along the Eastern Seaboard and over the Southeastern United States by the time our upcoming weekend arrives. Between now and then, our northerly wind flow will shift southward; this will allow not only more heat, but more Gulf humidity to force its way northward into the Tri-State. Thursday's high of 89° will give way to afternoon highs in the mid to low 90s for Friday, Saturday and Sunday.
Friday will be mostly sunny with peak temperatures reaching the 90° mark for many of us - it'll be Evansville's hottest day in just over a week. Saturday's anticipated high of 92° will mark the River City's hottest in nearly three weeks, but Sunday - Sunday looks brutal. Sure, those "feels like" temperatures on Friday and Saturday will be flirting with the triple digits at times, but anything we see during that 48 hour period will pale in comparison to what will be the hottest day the Tri-State has seen since June 12th. We'll tip the scales at 94° in Evansville Sunday afternoon, but dew point values in the mid 70s could make it feel as hot as 105° that afternoon!