Partly cloudy overnight Hot/humid temperature trend pattern continues this weekend Relief from the heat arrives late weekend/early next week >> DP&L tips to be safe during extreme hot weather DETAILED FORECAST: Overnight: It will be partly cloudy, warm and muggy with an isolated shower or storm early, Storm Center 7 Meteorologist Jesse Maag said. Low temperatures will fall towards 70 degrees. Friday: Another round of afternoon and evening storms is expected. It will still be hot and humid with a high in the upper 80s and a heat index in the low to middle 90s. >> Heat index: What is it? Why does it matter? >> Heat lightning debunked: There’s no such thing Saturday: Conditions will be hot and humid with highs in the middle 80s. The heat index will top off near 90 degrees. The trend of afternoon and early evening storms will continue. A strong to severe thunderstorm is possible. >> Heat and humidity means cranking up the air conditioner and fans Sunday: It will be partly cloudy and warm, but a bit less humid. An isolated pop-up shower or storm is possible, mainly to the southeast. Highs will be in the middle 80s. >> The shadow rule: what your shadow can tell you about the UV Index Monday: Lower humidity and temperatures near the average in the low to middle 80s will make for a nice start to the workweek. The less humid air will be accompanied by mostly sunny skies as well. Tuesday: It will be another nice day with plenty of sunshine and low humidity. Highs will reach the mid-80s.