The mercury barely reached 90° in Evansville this afternoon (marking our 5th straight day in the 90s) before showers and storms dropped temperatures nearly 20° in just under 2 hours. Drier weather is expected to persist through the evening ahead though and if you have plans outdoors this evening, you're in luck - the rain-cooled air will remain simple that, cool. Temperatures around dinnertime will have rebounded into the upper 70s before dipping toward the mid 70s around 10PM and eventually to 72° by the predawn hours Saturday. Saturday and Sunday however, are expected to be anything but cool; temperatures will again soar into the mid to low 90s area wide both days with a stray shower or two each afternoon.
A cold front approaching from the Upper Great Plains and Great Lakes will stall to our north Monday; as it stalls, that front will interact with all of our lingering heat and humidity at the surface and generate showers and thunderstorms that afternoon. That being said, our greatest chance for rainfall during the extended forecast isn't expected to arrive until Tuesday. Hurricane Ida remains more than 1,000 miles away from the Tri-State, but its remnants are currently projected to reach our region next Tuesday supplying the region with as much as 1" and 3" of total rainfall that day alone. While next Tuesday looks particularly damp for the Ohio Vally, Ida's greatest effects will be felt well to our south.
Hurricane Ida is currently projected to make landfall Sunday afternoon somewhere along the Louisiana Gulf Coast as a Category 4 Major Hurricane. The storm will likely produce sustained winds of 140 mph along with 15-foot storm surges in some areas along the coast; additionally, some parts of Louisiana may see up to 15" of total rainfall. If you have family or friends who reside in Southern Louisiana, please reach out to them and ask that they evacuate to a safer location. A storm like this could be potentially catastrophic to the areas most affected.