A shower has moved in already, slowly drifting through the northern Miami Valley, Storm Center 7 Chief Meteorologist Jamie Simpson said.
"We'll see a few more, but more likely toward morning. I am not even ruling out a stray rumble of thunder," Simpson said.
Evening temperatures will be in the 60s, and overnight lows will be in the lower 60s.
By sunrise Friday, the chance for showers likely will just be across the southeast, and Simpson said he does not expect any rain after 9 a.m. After that, clouds will give way to sun with lowering humidity. It will be breezy at times with afternoon highs in the mid-70s.
"Evening conditions will be wonderful with comfortable air," he said, as temperatures drop back into the 60s.
Saturday will be "an absolutely perfect day with sunshine, low humidity and comfortable conditions," Simpson said. The day will start near 50 and will warm up close to 80 in the afternoon, though most of the area will stay in the upper 70s.
On Sunday, humidity will not return until late, so the day should be comfortable again, albeit warmer, Simpson said. After a start in the upper 50s, the afternoon temperature should reach around 83. "Some afternoon clouds will be all we see, as it should be a great pool day."
On Monday, humidity will lead to some scattered showers and thunderstorms, especially in the afternoon, as the area is "back in the soup, so to speak," Simpson said. Highs Monday will be in the mid-80s.
On Tuesday, the day will be similar to Monday with scattered showers and thunderstorms, especially afternoon. Highs again will be in the mid-80s.