Rex from Springfield, MO on 8/3/2024 9:12:40 AM:
The odds are that it will be in the 90s in late August. Even so, the trail has a lot of shade, so it's not too bad. I went one time when it got up to 104 degrees and the only really bad stretch I remember was the last stretch to St. Charles, where there was not much shade. If there is no rain for a long time, it can get very dusty.
I don't know anything about camping in Hartsburg.