This is a chart showing the forecast sky conditions for astronomers near Stillwell, Ohio, the location nearest to Millersburg. More information about the chart and for other locations can be found here.
Click on the chart to go to the originating website for instruction how to interpret the chart. In general the darker colors indicate better observing conditions.
Another location slightly further away is The Wilderness Center near Wilmot, Ohio. Millersburg is midway between TWC to the northeast and Stillwell to the southwest. Again you can click on the chart for more information about that forecast.