It has been almost 2 weeks now but did a 6 mile hike on the C&O from Brunswick downstream. The temporary bridge has been up for a while, that is fine but the construction traffic had left a lot of wheel ruts on the towpath in and out, that stretch was worse than usual.
Outside of that, the typical areas that get muddy were pretty dry. We've had about 1 inch of rain since then, last night's storms seemed to stay south of the Potomac. The forecast is for various scattered showers, so my guess is you won't hit anything close to the epic mud pits like last year but you will get spattered.
Since you are familiar with it, overall I'd guess it is pretty average conditions right now, you'll have to see how much rain falls over the next few days.