Update @10:49 p.m.: "We'll stay rain-free overnight, but I do expect patchy fog to develop," said Storm Center 7 Chief Meteorologist Jamie Simpson, who warned the fog "could be dense in spots by morning."
Any shower and thunderstorms that form Saturday should be limited to the far west, primarily Wayne and Randolph counties in Indiana, but perhaps also Butler, Preble and Darke counties in Ohio.
The National Weather Service issued a flood advisory, which was to be in effect through 3:30 a.m.
Saturday: After the patchy fog to start, a mix of sun and clouds is expected. There will be the potential for a few showers and thunderstorms, but the most likely locations will be the Indiana line westward, where the greatest rainfall amounts already have been. Most will stay dry. It will be warm and humid with highs in the upper 80s.
Sunday: This day looks rain-free with partly cloudy skies. It will still be humid and patchy fog will likely start the day. Morning lows will be in the upper 60s and afternoon highs in the upper 80s.
Monday and Tuesday: Both days will have a mix of sun and clouds with the chance for an isolated afternoon shower or thunderstorm. Storms will likely not be severe. Lows near 70 both days and highs in the upper 80s are expected.
Wednesday: A better chance exists for scattered showers and storms in the afternoon and evening. There will be more clouds and it will not be quite as warm with highs in the mid-80s.
@8:35 p.m.: Fog is a concern later tonight and into the overnight, early morning hours, Storm Center 7 Chief Meteorologist Jamie Simpson said.
"We'll probably have some (fog) by 11 tonight. The chance is high some locations see dense fog by morning."
@7:10 p.m.: A few isolated showers in Greene, Warren and Clinton counties should be gone by 8 or 8:30 p.m. at the latest, Storm Center 7 Chief Meteorlogist Jamie Simpson said. "Then, I anticipate we stay dry all night."
@4:10 p.m.: We now have 4-inch rainfall totals over the last 48 hours in Union City, Greenville in Darke County as well as in many locations in Randolph County, Ind., according to Storm Center 7 Chief Meteorologist Jamie Simpson.
Rainfall totals between 2.5 and 3.5 inches have falling in locations in Wayne County, Ind., and in Preble, Darke, Mercer, Miami and Shelby counties.
Dayton and Springfield received about 2 inches of rain.
There are no more watches or warnings, but a flood advisory remains for Randolph County through tonight for lingering high water, Simpson said.
Tonight, a few showers will develop, and some may produce thunder. However, it will be isolated and not likely to exacerbate the flood potential, Simpson said.
"These should end after sunset, but due to the high humidity and wet ground, we do expect patchy fog to develop by morning," he said.
Temperatures will drop into the upper 60s to around 70 by morning.
@12:34 p.m.: The National Weather Service canceled a flash flood watch for Auglaize, Butler, Champaign, Clark, Darke, Greene, Logan, Mercer, Miami, Montgomery, Preble, Shelby and Warren counties in Ohio and Wayne County in Indiana.
A flash flood watch is in effect until 10 p.m. today.
The National Weather Service said heavy rain today could cause issues in Mercer, Auglaize, Darke, Shelby, Logan, Miami, Champaign, Clark, Preble, Montgomery, Greene, Butler and Warren counties, as well as parts of Indiana.
Scattered storms will taper off this morning, and weather will be dry into the afternoon, said Storm Center 7 Meteorologist Rich Wirdzek.
Thunderstorms will arrive again after that, however, and move slowly through the area, Wirdzek said.
Highs will be in the mid- to upper-80s today, and fall into the upper-60s overnight.
Saturday: Partly cloudy, very warm and humid. Less chance for rain, but a few thunderstorms are possible in the afternoon. Highs near 90 degrees.
Sunday: Partly cloudy, very warm and humid. An isolated thunderstorm is possible in the afternoon. Highs in the upper-80s.
Thank you for reading the Springfield News-Sun and for supporting local journalism. Subscribers: log in for access to your daily ePaper and premium newsletters.
Thank you for supporting in-depth local journalism with your subscription to the Springfield News-Sun. Get more news when you want it with email newsletters just for subscribers. Sign up here.