I hosted one of these in the past for Prairie Ridge Park and absolutely enjoyed the experience. I've checked out Cherokee Marsh Park South before to do photography and saw cranes, turkeys and a variety of birds. Based on the park reviews the North unit is just as scenic. The site information about this tour is at this link:
Based on the provided information this will be a casual walk that is guided. The tour will happen rain or shine so bringing an umbrella may be a good option if you're interested. I will keep the predicted weather updated on here to help. The chance of rain is currently less than 20% at this point with the predicted temperature around the high 60s.